TWM284035U - Control circuit for proportional driving switching power supply - Google Patents
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M284035 八、新型說明： 【新型所屬之技術領域】 摘作是有_-種《供《的控觀置，且制是於—種犯喊式電源 i、應為的控制裳置。 【先前技術】M284035 8. Description of the new model: [Technical field to which the new model belongs] The excerpt is to have a control concept of "for", and the system is a kind of guilty power supply i. The control device that should be used. [Prior art]
等比駆動式《供應電路的優點是效率高，尤Μ在驅動—雙極性電晶體 時’其控魏置不《產找大的基極電流來驅動該雙極性電㈣。該控制裝置 只需要產生小控制信號便可驅動控制高瓦特的電源輸出。 第-圖為-等比驅動式電源供應器之電路。其中控制裝置（未繪示）所產生 的一第一輸出信號Sl與一第二輸出信號S2,係用於分別控制驅動電晶體51與61。 該驅動電晶體51與61連接至一驅動變壓器20，進而控制功率電晶體50與6〇的 切換。功率電晶體50、60與電容器40、45建構成一半橋驅動架構電路，用於切 換一變壓器ίο。該變壓器ίο具備了多組次級繞組（例如繞組Nsi、Nsi，、Ns2、及 Ns2’）’經由整流器（例如二極體71〜74)、電感（例如電感91、95)以及電容 器（例如電容81、83)的整流濾波而分別產生多組電壓（例如電壓£1與E2)。 而電壓E!與E2可以再經由多個阻抗器（例如阻抗92、93、96 )與電容器（例如 電容82、84、85)之濾波而產生更多組輸出電壓（例如輸出電壓Vt、V2A、V2B)。 其中之阻抗器92、93、96可以是電感或電阻。而該電壓Ει更可以透過一電壓調 節器100而產生另一輸出電壓V3。此外，變塵器1〇之次極繞組NS1與NS1，經由整 流器73、74及由電阻98、99所組成的分歷電路而連接到一信號偵測端UVAC， 用於偵測變壓器10之信號的電壓位準。 第一圖所示之該驅動變壓器20包含了推挽繞組Ndi與N〇2、基極繞組\81與 Nb2、以及電流繞組N!。其中推挽繞組Ndi^Nd2的中間抽頭經一二極體31及一 電阻34耦接至一供應電源Vcc。此一中間抽頭又經一二極體32、一電容器33及 5 M284035 电阻35、36耦接至功率偵測端OPp，用於偵測該等比驅動式電源供應器的輪出 功率。另外，推挽繞組nd1#Nd2之兩端分別連接至驅動電晶體51與61。而驅動 電晶體51與61分別有-反向二極體S2與w與之並聯。該驅動變壓器2〇的基極 繞組nb1與nB2分別經過阻抗電路SS#6S而驅動功率電晶體5〇與6〇。該電流繞 組乂則與該半橋驅動架構電路串聯，用於感應該變壓器1()的電流。 ^ 第- A圖〜第一 F圖分別說明該等比驅動式電源供應器的工作時序與狀態。 如第二A圖所示，當藉由該第—輸出信號〜導通（_⑽）該電晶體51並藉由 該第二輸出信號82戴止（turnoff)該電晶體㈣，一小電流將流經電阻別、一The advantage of the proportional-running type "supply circuit is that it is highly efficient, especially when driving a bipolar transistor," its control means that it is difficult to produce a large base current to drive the bipolar transistor. The control device only needs to generate a small control signal to drive and control the high watt power output. The figure-is the circuit of a proportional power supply. A first output signal S1 and a second output signal S2 generated by the control device (not shown) are used to control the driving transistors 51 and 61, respectively. The driving transistors 51 and 61 are connected to a driving transformer 20 to control the switching of the power transistors 50 and 60. The power transistors 50 and 60 and the capacitors 40 and 45 form a half-bridge driving architecture circuit for switching a transformer. The transformer is provided with multiple sets of secondary windings (such as windings Nsi, Nsi, Ns2, and Ns2 ') through a rectifier (such as diodes 71 to 74), an inductor (such as inductors 91 and 95), and a capacitor (such as capacitor 81, 83) to generate multiple sets of voltages (eg, voltages £ 1 and E2). The voltages E! And E2 can then be filtered by multiple resistors (such as impedances 92, 93, 96) and capacitors (such as capacitors 82, 84, 85) to generate more sets of output voltages (such as output voltages Vt, V2A, V2B). The resistors 92, 93, and 96 can be inductors or resistors. The voltage Em can be used to generate another output voltage V3 through a voltage regulator 100. In addition, the secondary windings NS1 and NS1 of the dust changer 10 are connected to a signal detection terminal UVAC through the rectifiers 73 and 74 and a calendar circuit composed of resistors 98 and 99 for detecting the signal of the transformer 10. Voltage level. The driving transformer 20 shown in the first figure includes push-pull windings Ndi and No2, base windings \ 81 and Nb2, and current windings N !. The middle tap of the push-pull winding Ndi ^ Nd2 is coupled to a supply power source Vcc via a diode 31 and a resistor 34. This intermediate tap is coupled to the power detection terminal OPp via a diode 32, a capacitor 33, and 5 M284035 resistors 35 and 36, for detecting the output power of the ratio-driven power supply. In addition, both ends of the push-pull winding nd1 # Nd2 are connected to the driving transistors 51 and 61, respectively. The drive transistors 51 and 61 have -inverted diodes S2 and w in parallel, respectively. The base windings nb1 and nB2 of the driving transformer 20 pass through the impedance circuit SS # 6S to drive the power transistors 50 and 60 respectively. The current winding 乂 is connected in series with the half-bridge driving structure circuit for sensing the current of the transformer 1 (). ^ Figures-A to F show the timing and status of the ratio-driven power supply. As shown in FIG. 2A, when the transistor 51 is turned on (_⑽) by the first output signal and turned off by the second output signal 82, a small current will flow through Resistance, one
極體31、推挽繞組nd1以及驅動電晶體S1。進而，推挽繞組Nm將使基極繞組 nb1感應-電動勢’此電動勢並透過阻抗電路55推動功率電晶體5〇。 -旦功率電晶體50導通，如第二B圖所示，—電流Ip將由電容器4()流經功 率電晶體50、電流繞組N|、變壓器1〇而流回電容器4〇。此時，電流繞組％將因 自激正回授效應而在基極繞組Nm產生並放大一等比例電流Ιβι， (l)The pole body 31, the push-pull winding nd1, and the driving transistor S1. Further, the push-pull winding Nm will induce the electromotive force 'of the base winding nb1 to drive the power transistor 50 through the impedance circuit 55. Once the power transistor 50 is turned on, as shown in the second B diagram, the current Ip will flow from the capacitor 4 () through the power transistor 50, the current winding N |, the transformer 10 and back to the capacitor 40. At this time, the current winding% will generate and amplify a proportional current Iβι in the base winding Nm due to the self-excited positive feedback effect, (l)
Ibi = Ip X (Tni / Tnbi) 其中Tni與Tnbi分別為電流繞組Ni與基極繞組nb1的繞線圈數。 由式（1)所示可知，功率電晶體50的基極電流與集極電流的比率可透過驅動變 壓器20的電流繞組N|與基極繞組NB】之繞線比來決定。當電流ιΒ1透過阻抗電路 55推動功率電晶體50的基極時，一電壓VB將建立在基極繞組Nbi上，Ibi = Ip X (Tni / Tnbi) where Tni and Tnbi are the number of windings of the current winding Ni and the base winding nb1, respectively. As can be seen from equation (1), the ratio of the base current to the collector current of the power transistor 50 can be determined by the winding ratio of the current winding N | and the base winding NB] of the driving transformer 20. When the current ιB1 drives the base of the power transistor 50 through the impedance circuit 55, a voltage VB will be established on the base winding Nbi,
Vb =【B1 X Zs5................................... (2) 其中Z5S是阻抗電路55的等效阻抗。 此電壓VB更將在推挽繞組Nd!感應一電壓VD，Vb = [B1 X Zs5 ..... (2) where Z5S is the impedance circuit 55 Equivalent impedance. This voltage VB will induce a voltage VD in the push-pull winding Nd!
Vd = (TND1 / TNBi) x VB....................... (3) 其中TND1是推挽繞組Ndi的繞線圈數° 由式(1)、（2)、式(3)可知Vd = (TND1 / TNBi) x VB .............. (3) where TND1 is the number of windings of the push-pull winding Ndi °. 1), (2) and (3)
Vd = (Tndi / ΤΝβι) χ (Τνι/Τνβι) X Zs5 χ Ip—(4) 6 M284035 因此，由式(3)可知電壓Vd與變壓器1〇之電流Ip成比例變化D而電壓麫 二極體32、電容器33以及電阻35、36耦接至功率偵測端〇ρρ，用於偵測電源供 應器的輸出功率。 參考第二C圖，當開啟第一輸出信號Si驅動電晶體51並開啟第二輸出传號 S2驅動電晶體61時，將在推挽繞組Ndi與兩端形成低阻抗，而使其如同短路 一般。因為推挽繞組〜則與nD2形同短路，而使能量無法傳遞到基極繞組n則與 Nb2。此時，基極繞組Nbi與Nb2也感應成低阻抗狀態。因此，關閉了功率電曰雕 50 與 60。Vd = (Tndi / ΤΝβι) χ (Τνι / Τνβι) X Zs5 χ Ip— (4) 6 M284035 Therefore, it can be known from equation (3) that the voltage Vd changes proportionally to the current Ip of the transformer 10 by D and the voltage is diode 32. The capacitor 33 and the resistors 35 and 36 are coupled to the power detection terminal 0ρρ for detecting the output power of the power supply. Referring to the second figure C, when the first output signal Si drives the transistor 51 and the second output signal S2 drives the transistor 61, a low impedance will be formed between the push-pull winding Ndi and the two ends, making it like a short circuit. . Because the push-pull winding ~ is short-circuited in the same way as nD2, and the energy cannot be transferred to the base winding n is Nb2. At this time, the base windings Nbi and Nb2 are also induced into a low impedance state. As a result, the power electronics 50 and 60 were turned off.
第二D圖〜第二F圖，分別說明等比驅動式電源供應器之另一相位的動作， 其工作時序與狀態與第二A圖〜第二C圖相似，故不再贅述。 由上述可得知，料.電賴應躲,_轉電晶體與6叫，侧用驅動變壓 器2〇的自激正回授來完成，並透過短路驅動變壓器20來關閉功率電晶體s〇與6❶。其 電流ιΡ的訊息也是麟二極體32及電容n33的整流濾波，成為―錢信财送至功率 偵測端OPP。因此，無法做到每一相位(cyc叫cycle)的控制保護士 源供應器赌出發生祕時，壓器2G的自激正賴效應，將產生—極大的電法 輸出，而燒毀此等比麟式電源供應器及其所供應的㈣。減等比鶴式電源供應: 各組輸出的最大電流_，可祕保護電驗_及其所供應的系統，尤其是保護該所 屬的連接器與相關接頭。另外，為了 b電射理而設計的電«Μ讀都是等比,驅 動式電源供應器所必備的控制電路。 【新型内容】 使此本织 =ΓΓ提供—種完整的等比轉式電源供應15的控制與保護電路， 使此一而效率、低成本的等比驅動式電源供應器電路具有實用性。 本創作的再一目的杲挺说 應器之輸出，並可以藉由電源狀況信 扶供一種專比驅動式電源供應器的控制裝置，以古# 率、低成本地控制與保護等比驅動式電源供， 呵效 號而指示該電源供應器的輪出狀況。 7 M284035 本創作的又一目的是提供一種電源供應器的控制裝置，以高效率、低成本地 控制電源供應器之輸出。 本創作的另一目的是提供一種電源供應器的控制裝置，以高效率、低成本地 控制與保護電源供應器之輸出，並可以藉由電源狀況信號而指示該電源供應器的 輸出狀況。 基於上述及其他目的，本創作提出一種等比驅動式電源供應器的控制裝置， 包括一第一回授輸入端、一第一放大器輸出端、一軟啟動輸入端、一振盪頻率設 定端、至少一電壓輪入端、至少一電流偵測端、一功率偵測端、一信號偵測端、 一電源開關輸入端、一電源狀況指示端、一第一輸出端、一第二輸出端、一第一 放大器、一振盪器、一保護單元以及一輸出電路。第一回授輸入端耦合到該等比 驅動式電源供應器的輪出’以提供該等比驅動式電源供應器的第—組回授控制。 第一放大器輸出端提供回授補償。軟啟動輸入端連接至一軟啟動電容器，以設定 等比驅動式電源供應器的軟啟動時間。振盪頻率設定端連接至一電阻。電壓輸入 端、電流偵測端與功率偵測端耦合到等比驅動式電源供應器。信號偵測端耦合至 等比驅動式電源供應器的變壓器。第一輸出端輸出第一輸出信號至該等比驅動式 電源供應器的第一切換開關。第二輸出端輸出第二輸出信號至等比驅動式電源供 應器的第二切換開關。其中，第一切換開關與第二切換開關連接並切換等比驅動 式電源供應器的變壓器，進而控制等比驅動式電源供應器的輸出。 第一放大器之第一輸入連接至第一回授輸入端，第一放大器的第二輸入耦人 到軟啟動輸入端，而第一放大器的輸出耦合至第一放大器輸出端，其中軟啟動輸 入端提供第一放大器一參考電壓。振盪器連接至振盪頻率設定端，用以依據電阻 而設定其振盪頻率。保護單元，用以連接至電壓輸入端以偵測等比驅動式電源供 應器的輸出電壓，連接至電流偵測端以搭配電壓輸入端偵測等比驅動式電源供應 器的輪出電流，連接至功率偵測端以偵測等比驅動式電源供應器的輸出功率，連 接至信號偵測端以偵測變壓器之信號的電壓位準，並且連接至電源開關輸入端以 接收一電源開關信號。輸出電路電性連接至第一放大器、振盪器、保護單元、第 一輪出端與第二輸出端，用以依據第一放大器的輸出而產生並分別提供第一輸出 信號與第二輸出信號至第一輸出端與第二輸出端，依據振盪器之輸出而決定^一 輪出信號與該第二輸出信號的切換頻率，並且依據保護單元之輸出而決定啟閉等 8 M284035 比驅動式電源供應器。其中，此控制裝置更依據電壓輸入端、信號偵測端以及電 源開關輸入端，而經由該電源狀況指示端輸出一電源狀況信號，以指示等比驅動 式電源供應器的輪出狀況。The second diagram D to the second diagram F respectively describe the operations of the other phases of the proportional drive power supply. The working timing and state are similar to the second diagram A to the second diagram C, so they will not be described again. From the above, it can be known that the electric power should be hidden, the _transistor and 6 are called, and the self-excited positive feedback of the drive transformer 20 is used to complete, and the short-circuit drive transformer 20 is used to close the power transistor s0 and 6❶. The information of its current lp is also the rectification and filtering of the diode 32 and the capacitor n33, which becomes the money sent to the power detection terminal OPP. Therefore, it is impossible to control and protect each phase (cyc called cycle). When the source supplier bets, the self-excitation positive effect of the voltage regulator 2G will produce-great electrical output, and burn these ratios. Lin-type power supply and its supplied puppet. Reduced-ratio crane-type power supply: the maximum current output of each group_, the protection of the electric test_ and the system it supplies, especially to protect the connector and related connectors. In addition, the electronic readouts designed for the b radio theory are all proportional, necessary control circuits for the drive power supply. [New content] Make the text = Provide a complete control and protection circuit for the proportional-ratio power supply 15 to make the efficient and low-cost proportional-running power supply circuit practical. Another purpose of this creation is to talk about the output of the reactor, and to provide a control device that is specifically driven by the power supply condition, and to control and protect the ratio-driven type at a low cost and ancient rate. The power supply indicates the turn-out status of the power supply with a valid number. 7 M284035 Another purpose of this creation is to provide a power supply control device that controls the output of the power supply with high efficiency and low cost. Another purpose of this creation is to provide a control device for a power supply, which controls and protects the output of the power supply with high efficiency and low cost, and can indicate the output status of the power supply by a power status signal. Based on the above and other purposes, the present invention proposes a control device of a proportional drive power supply, which includes a first feedback input terminal, a first amplifier output terminal, a soft-start input terminal, an oscillation frequency setting terminal, at least A voltage wheel input terminal, at least a current detection terminal, a power detection terminal, a signal detection terminal, a power switch input terminal, a power status indicator terminal, a first output terminal, a second output terminal, a The first amplifier, an oscillator, a protection unit, and an output circuit. The first feedback input is coupled to the wheel-out of the ratio-driven power supply to provide a first group of feedback control of the ratio-driven power supply. The first amplifier output provides feedback compensation. The soft-start input is connected to a soft-start capacitor to set the soft-start time of the proportional drive power supply. The oscillation frequency setting terminal is connected to a resistor. The voltage input terminal, the current detection terminal and the power detection terminal are coupled to a proportional driving power supply. The signal detection terminal is coupled to the transformer of the proportional drive power supply. The first output terminal outputs a first output signal to a first switch of the ratio-driven power supply. The second output terminal outputs a second output signal to a second changeover switch of the proportional drive power supply. The first changeover switch is connected to the second changeover switch and switches the transformer of the proportional drive power supply, and further controls the output of the proportional drive power supply. The first input of the first amplifier is connected to the first feedback input, the second input of the first amplifier is coupled to the soft-start input, and the output of the first amplifier is coupled to the first amplifier output, where the soft-start input A first amplifier-reference voltage is provided. The oscillator is connected to the oscillation frequency setting terminal, and is used to set its oscillation frequency according to the resistance. The protection unit is connected to the voltage input terminal to detect the output voltage of the proportional drive power supply, and is connected to the current detection terminal to detect the wheel current of the proportional drive power supply. Go to the power detection terminal to detect the output power of the proportional drive power supply, connect to the signal detection terminal to detect the voltage level of the signal from the transformer, and connect to the power switch input to receive a power switch signal. The output circuit is electrically connected to the first amplifier, the oscillator, the protection unit, the first output terminal and the second output terminal, and is used for generating and providing the first output signal and the second output signal to the output of the first amplifier respectively. The first output terminal and the second output terminal determine the switching frequency of a round output signal and the second output signal according to the output of the oscillator, and determine the opening and closing etc. according to the output of the protection unit. 8 M284035 ratio drive power supply . The control device is further based on the voltage input terminal, the signal detection terminal, and the power switch input terminal, and outputs a power status signal through the power status indicating terminal to indicate the rotation status of the proportional power supply.
從另一觀點來看，本創作提出一種等比驅動式電源供應器的控制裝置，包括 一第一回授輸入端、一第一放大器輸出端、一軟啟動輸入端、一第一輸出端、一 第二輸出端、至少一電壓輸入端'一功率偵測端、一信號偵測端、一電源開關輸 入端以及一電源狀況指示端。第一回授輸入端連接至第一放大器之第一輪入，其 中該第一回授輪入端更耦合到等比驅動式電源供應器的輸出，以提供等比驅動式 電源供應器的第一組回授控制。第一放大器輸出端耦合至第一放大器的輸出，以 提供回授補償。軟啟動輸入端連接至軟啟動電容器，用於設定等比驅動式電源供 應器的軟啟動時間。軟啟動輸入端更耦合到第一放大器之第二輸入，以提供第一 放大器一參考電壓。第一輸出端與第二輸出端分別輸出第一輸出信號與第二輸出 信號。第一輸出信號與第二輸出信號係依據第一放大器的輸出而產生，並耦合驅 動第一切換開關與第二切換開關。其中，第一切換開關與第二切換開關連接並切 換等比驅動式電源供應器的變壓器，進而控制等比驅動式電源供應器的輪出。電 壓輸入端連接至過電壓保護電路與低電壓保護電路，用於偵測等比驅動式電源供 應器的輸出電壓。功率偵測端連接至過功率保護電路，用於偵測等比驅動式電源 供應器的輸出功率。信號偵測端耦合至變壓器與信號偵測電路，用於偵測變壓器 之信號的電壓位準。電源開關輸入端接收電源開關信號並連接至電源開關電路， 用於啟閉等比驅動式電源供應器。電源狀況指示端依據電壓保護電路的輸出、伊 號偵測電_輸出錢電Μ關信號，產生電雜況信號，餘指示^驅減 電源供應器的輸出狀況。 令剧仲捉扣一…，….——一―、且，巴彷一弟一回授輸入端、一第一放 大器輪出端…軟啟動輸人端一第-輪出端、—第二輸出端以及—電源開關輸 入端。第-回授輸入端連接至第一放大器之第—輸入，其中第—回授輸入端更二 合到電源供《的輸出’以提供電源供應器的第—組回授控制。第—放大琴輸出 端搞合至該第-放大㈣輸出’以提供回_償。賴錄人端連接至軟啟^ 容器，用於設定«供應器的軟啟動時間。該軟啟動輪人端㈣合到第一放大哭 之第二輸人，以提供第-放大器-參考„。第_輸出端與第二輪出端分別輸: M284035 第一輸出信號與第二輸出信號。該第一輪屮 。 吊輸出^娩與第二輸出信號是依據第一放大 器的輸出而產生，並耦合驅動第一切換開關鱼 兴開關與第一切換開關。其中，第一切換開 關與第二切換開關連接並切換該電源供 电席仪應為的變壓器，進而控制電源供應器的輸 關電路，用於啟閉該電源 出。電源開關輸入端接收電源開關信號並連接至電源開 供應器。 本創作再提出一種電源供應器的控制#里 仏制裝置，包括電壓輸人端、電流摘測端、 一功率侧、一刪測端、一電源開關輸入端、一電源狀況指示端以及一電 源保護輸出端。《輸人端連接至過電壓保護電路與低電龍護電路，用於横測From another point of view, the present invention proposes a control device of a proportional drive power supply, which includes a first feedback input terminal, a first amplifier output terminal, a soft-start input terminal, a first output terminal, A second output terminal, at least one voltage input terminal, a power detection terminal, a signal detection terminal, a power switch input terminal, and a power status indicator terminal. The first feedback input terminal is connected to the first input of the first amplifier, wherein the first feedback input terminal is more coupled to the output of the proportional drive power supply to provide the first drive input of the proportional drive power supply. A set of feedback control. The first amplifier output is coupled to the output of the first amplifier to provide feedback compensation. The soft-start input is connected to a soft-start capacitor and is used to set the soft-start time of the proportional drive power supply. The soft-start input is further coupled to the second input of the first amplifier to provide a reference voltage for the first amplifier. The first output terminal and the second output terminal respectively output a first output signal and a second output signal. The first output signal and the second output signal are generated according to the output of the first amplifier, and are coupled to drive the first switch and the second switch. The first changeover switch is connected to the second changeover switch and switches the transformer of the proportional drive power supply, so as to control the rotation of the proportional drive power supply. The voltage input terminal is connected to the overvoltage protection circuit and the low voltage protection circuit, and is used to detect the output voltage of the proportional drive power supply. The power detection terminal is connected to the over power protection circuit, and is used to detect the output power of the proportional drive power supply. The signal detection terminal is coupled to the transformer and the signal detection circuit, and is used to detect the voltage level of the signal of the transformer. The input terminal of the power switch receives the power switch signal and is connected to the power switch circuit, which is used to turn on and off the proportional drive power supply. The power status indicator is based on the output of the voltage protection circuit and the I-detection power output signal to generate an electrical miscellaneous signal. The remaining indications reduce the output status of the power supply. Let the play Zhong catch a deduction ..., ...——————, and, Ba Fang Yidi a feedback input terminal, a first amplifier wheel output terminal ... soft start input terminal a first-round output terminal,-second Output and —power switch input. The first feedback input terminal is connected to the first input of the first amplifier, wherein the first feedback input terminal is further coupled to the power supply for the "output" to provide the first group of feedback control of the power supply. The first-amplifier output terminal is coupled to the first-amplifier output to provide compensation. The Lai Lu terminal is connected to the soft start container, which is used to set the soft start time of the supplier. The soft-start round terminal is coupled to the second amplifier input of the first amplifier to provide a first-amplifier-reference. The first output terminal and the second output terminal respectively: M284035 first output signal and second output The first output signal and the second output signal are generated according to the output of the first amplifier, and are coupled to drive the first switch Yuxing switch and the first switch. Among them, the first switch and The second switch is connected to and switches the transformer that the power supply mat should be, and then controls the input and output circuit of the power supply to turn on and off the power output. The input end of the power switch receives the power switch signal and connects to the power on supply This creation proposes a control device for the power supply, which includes a voltage input terminal, a current extraction terminal, a power side, a delete terminal, a power switch input terminal, a power status indicator terminal, and a Power protection output terminal. "The input terminal is connected to the over-voltage protection circuit and the low-voltage dragon protection circuit for horizontal measurement.
電源供應】的輸出《之過電壓狀態與低電壓㈣。電流侧端搭配其電壓輸入 % ’連接至過電流保護電路’用於制電源供應器的輪出電流之過電流狀態。功 率制端連接至過功率保«路，用於_電源供應㈣輪出功率。信號侧端 叙合至電源供應器的變壓器與信號偵測電路，用於偵測變壓器之信號的電壓位 準。電源開關輸入端接收電源開關信號並連接至電源開關電路，用於啟閉電源供 應益。電源狀況指示端依據過電壓保護電路與低電壓保護電路的輸出、信號制 電路的輸出以及電源關信號’產生_電源狀況信號以指示電源供應器的輪出狀 況。電源保護輸出端依_電壓賴電路、低錢賴桃、過電流保護電路及 過功率保護電路產生-電源保護信號，用於啟閉電源供應器。 本創作因提供完整的等比驅動式電源供應器的控制與保護電路，因此可以高 效率、低成本地控解tu_式電源供應器之輸出，保護料驅動式電源供應器 及其負載電路，並可以藉由電源狀況信號而指示該電源供應器的輸出狀況。 為讓本創作之上述和其他目的、特徵和優點能更明顯易懂，下文特舉較佳實施例， 並配合所附圖式，作詳細說明如下。 【實施方式】 為便於說明本創作之應用，以下諸實施例依然沿用第一圖之等比驅動式電源 供應器，作為本創作之實施射控缝置之控制標的。熟習此技藝者可以秉持本 創作之精神與以下諸實施例之教示，賴推至其他電源供應器。 第三圖是依據本創作說明一種等比驅動式電源供應器之控制裝置的實施例。 请麥照第三圖，此等I義式電源供絲（以下稱為電源供顧）的控制裝置包 10 M284035 括第一第一回授輸入端1N、第一放大器輸出端COM、軟啟動輸入端ss、振盪頻 率設定端RI、電壓輸入端V«〜Vi、電流偵測端en〜幻、功率偵測端〇pP、信號偵 測端UVAC、電源開關輸入端PSON、電源狀況指示端PG、第一輸出端OUT1、 第二輸出端OUT2、第一放大器160、振盪器200、保護單元300以及輸出電路。 於本實施例中，輸出電路包括T型正反器151、D正反器152、反及閘I56與157、 及閘158、反相器159、比較器165等。Power supply] output "overvoltage status and low voltage ㈣. The current-side terminal is matched with its voltage input% ′ and is connected to an overcurrent protection circuit ′ to control the overcurrent state of the wheel output current of the power supply. The power control terminal is connected to the over power protection circuit for the power output of the power supply. The signal side is a transformer and signal detection circuit connected to the power supply to detect the voltage level of the signal from the transformer. The power switch input receives the power switch signal and is connected to the power switch circuit for turning on and off the power supply benefits. The power status indication terminal generates a power status signal according to the output of the over-voltage protection circuit and the low-voltage protection circuit, the output of the signal system circuit and the power-off signal 'to indicate the status of the power supply. The power protection output terminal generates a power protection signal according to the voltage voltage circuit, low-voltage power circuit, overcurrent protection circuit, and overpower protection circuit, which is used to turn on and off the power supply. Because this creation provides a complete control and protection circuit of a proportional drive power supply, it can control the output of a tu_ type power supply with high efficiency and low cost, a protective material drive power supply and its load circuit. The output status of the power supply can be indicated by a power status signal. In order to make the above and other objects, features, and advantages of this creation more comprehensible, the following describes the preferred embodiments in detail with the accompanying drawings, as follows. [Embodiment] For the convenience of explaining the application of this creation, the following embodiments still use the same ratio-driven power supply of the first figure as the control target for the implementation of the shot control sewing of this creation. Those skilled in this art can uphold the spirit of this creation and the teachings of the following embodiments, and rely on other power supplies. The third figure illustrates an embodiment of a control device of a proportional drive power supply according to the present invention. Please take the third picture, the control device package of these I Italian-style power supply wires (hereinafter referred to as the power supply supplier) 10 M284035 including the first first feedback input terminal 1N, the first amplifier output terminal COM, and the soft start input Terminal ss, oscillation frequency setting terminal RI, voltage input terminal V «~ Vi, current detection terminal en ~ magic, power detection terminal 0pP, signal detection terminal UVAC, power switch input terminal PSON, power status indication terminal PG, The first output terminal OUT1, the second output terminal OUT2, the first amplifier 160, the oscillator 200, the protection unit 300, and the output circuit. In this embodiment, the output circuit includes a T-type inverter 151, a D-type inverter 152, an inverter gates I56 and 157, an inverter gate 158, an inverter 159, a comparator 165, and the like.
第一回授輸入端IN連接至第一放大器160之第一輸入（在此為負輸入）。第 一回授輸入端IN更耦合到電源供應器的輸出’用於提供電源供應器的第一組回授 控制。第一放大器輸出端COM耦合至第一放大器160的輸出，以便提供回授穩 定度的補償。軟啟動電路4⑽經由軟啟動輸入端SS連接至軟啟動電容器450 (繪 於第七圖），用於設定電源供應器的軟啟動時間。此軟啟動輪入端SS更耦合到第 一放大器160之第二輸入（在此為正輸入），以提供第一放大器一參考電壓vREF。 輸出電路依據第一放大器160的輸出而經由第一輸出端ουτί與第二輸出端 OUT2分別輸出第一輸出信號81與第二輸出信號S2，以耦合並驅動電源供應器中 的第一切換開關50與第二切換開關60。其中第一切換開關50與第二切換開關6〇 連接至電源供應器的變壓器10,進而控制電源供應器的輸出。 電壓輸入端VfW、電流偵測端en〜e|與功率偵測端〇pp耦合到電源供應 器。信號偵測端UVAC耦合至電源供應器的變壓器1〇。保護單元3〇〇連接至電壓 輸入端(即電源供應器的輸出）以制電源供應器的輸出電壓。保護單元 編亦連接至電流_端6„〜e丨，以搭配電壓輪入端Vn〜v丨偵測電源供應器的輪出 電流。保護I 7L 3GG更透功率偵測端〇pp以偵測電源供應器的輸出功率，並且依 據_結果輸出過功率保護信號OPH。保護單元則亦連接至信號镇測端 UVAC，以偵測變壓器1〇之信號的電壓位準 —^ 1半另外保濩早疋300經由電源開關 輸入端PSON接收一電源開關信號，並據輪 & ^ I诹从铷出關閉化號〇FF。輸出電路更依據 保護單元300之輸出而決定啟閉電源供應器。 11 M284035 其中，第三圖之控制裝置更依據電壓輸入端Vn〜Vi、信號偵測端UVAC以及 電源開關輸入端PSON，而經由電源狀況指示端PG輪出—電源狀況信?虎〜，以 指示電源供應器的輪出狀況。 振蘯器2⑽產生-振盡信號PLS與一鑛齒波信?虎Vsw。減器2〇〇透過振 盪頻率設定端RI連接至電阻205(繪於第五圖），以便依據電阻2G5而決定其振 盪頻率。振盪信號PLS連接至T型正反器151興D型正反器152的觸發輸入。鋸 齒波信號vSAW耦接到比較器165的第一輸入（在此為負輸入）。比較器165的第 二輸入（在此為正輸入）係耦接到第一放大器160的輪出。比較器165比較鋸齒 波k號Vsaw與弟一放大器160的輸出後，輸出脈波調變信號。比較器1的的輸出 連接到及閘158的一輸入。及閘158的另一輸入透過反相器159而耦合到關閉信 號OFF。及閘158的輸出用於重置D型正反器152的輪出。 反及閘156與157各別輸出第一輸出信號Si與第二輪出信號§2至第一輸出端 OUT1與第二輸出端〇UT2。反及閘156的輸入分別為振盪信號pls、過功率保 護信號ΟΡΗ、T型正反器151的第一輸出以及D型正反器152的第一輸出。反及 閘157的輸入分別為振盪信號PLS、過功率保護信號〇ρΐϊ、τ型正反器ι51的第 二輸出以及D型正反器152的第一輸出。因此，輸出電路可以依據振盪器2〇〇之 輸出而決定第一輸出信號8!與第二輸出信號S2的切換頻率。 另外，第三圖之控制裝置更包含有第二回授輸入端FB、可控單元128與第二 放大器輸出端VA。可控單元128包含第二放大器162與電晶體163。第二回授輸 入端FB連接至第二放大器162之一輸入（在此為正輸入），其中第二回授輸入 端FB更耦接到電源供應器的輸出，以提供電源供應器的第二組回授輸入。第二 放大器輸出端VA，經由電晶體163耦接至第二放大器162的輸出，用於第二組回 授控制。其中，第二放大器162之另一輸入（在此為負輸入）係耦接到第一參考 位準VR1 〇 第四圖是依照本創作之實施例說明使用可控單元128所構成的電壓調節電 路。請參照第四圖，此電壓調節電路譬如可作為第一圖中電壓調節器100，其包 12 M284035 括電晶體U〇、電阻121〜125、電容126。於電壓調節器1〇〇中，電晶體^❶之 /及極”源極各自接收電壓A以及產生輸出電壓％。電晶體Η❶之閘極透過電阻 麵接至電壓®2。第二放大器輸出端VA係轉接至電晶體η❶之閘極與電容126 之一端。電容126之另一端則透過電阻125耦接至第二回授輸入端]?]8。電阻121 與122串聯於輪出電壓％與接地之間，而第二回授輸入端fb則耦接於電阻ΐ2ι 與122之間。 第五圖為振盪電路200的較佳實施例，其中電阻205透過振盪頻率設定端Ri 連接到一電壓對電流轉換器。該電壓對電流轉換器是由放大器210、電晶體211 所組成。第二參考位準VR2連接至放大器210的輸入（在此為正輸入），而第二 參考位準VR2與電阻205產生一頻率設定電流。電晶體212〜217組成電流鏡電 路，此電流鏡電路係用以產生參考電流IR以及振盪器所需要的充電電流與放電電 流。振盪控制電路由比較器230、235、反及閘240、245以及反相器250所組成。 振盪控制電路產生振盪信號PLS，以控制開關221與222。該開關221與222分 別控制對電容器225之充電電流與放電電流，並產生鋸齒波信號vSAW。此錯齒波 信號VsAW係介於箝限電壓Vh與Vl之間。 第六圖為一保護單元300的較佳實施例，包含有過電壓保護電路310、低電 壓保護電路350、過電流保護電路320、過功率保護電路330、介面電路34〇、電 源狀況指示電路以及電源閉鎖電路。過電壓保護電路310與低電壓保護電路350 係連接至電壓輸入端Vn〜Vi，用於偵測電源供應器的輸出電壓是否過高壓或是過 低壓。 該電源狀況指示電路是由反或閘361、反及閘375、延遲電路365與電晶體 380所組成，用以輸出電源狀況信號VpG到電源狀況指示端PG，此電源狀況信號 指示電源供應器的輸出狀況。當電源供應器輸出正常時’意即過電壓保護電路310 與低電壓保護電路35〇皆沒有偵測到過電壓與低電壓的輸出時，經過延遲電路365 的延遲時間確認後，將經由電源狀況指示端PG輸出電源狀況信號vpg。 13 M284035 過电/m«保濩電路320係連接至電流偵測端，搭配電壓輸入端、〜， 用於債測電源供應器的輸出電流之過電流狀態。過功率保護電路33〇係連接至功 率偵測知OPP ’用於偵測電源供應器的輸出功率。介面電路34G包含信號價測電 路與電關關電路。其巾錢制電路透過信麵測端UVAC_合至變壓器， 用於偵測魏15 1G之信號的電壓位準。電Μ關電Μ透過電關關輸入端 PSON接收-電源開關信號，以決定電源供應器之啟閉。另外介面電路州係配 合電壓保護電路310與35〇的輸出、信號偵測電路的輸出以及電源開關信號等， 透過電源狀況指示端PG輸出電源狀況信號VpG，用於指示電源供應器的輪出狀 • 况。t介面電路340之信號偵測電路經由信號偵測端UVAC偵測到變壓器1〇之 仏號幻電壓位準低於一第六參考位準Vr6時，在延遲一時間後關閉其電源狀況信 號 VPG。 " 至於電源閉鎖電路則是由或閘362、反及閘376、延遲電路366、反相器371、 D型正反器370所組成，用以產生關閉信號〇FF。電源開關輸入端ps〇N接收電 源開關信號，用於控制關閉信號〇FF。當電源開關信號被開啟時，將透過關閉信 號OFF而輸出第一輸出信號§1與第二輸出信號心。此時，若電源供應器發生任 何誤動作將啟動相對應之保護電路，並關閉鎖定關閉信號〇FF而截止第一輸出信 號Si與第二輸出信號當電源開關信號被關閉時，將先關閉電源狀況指示端 . PG之電源狀況信號Vpg，並經過延遲電路366的延遲時間後重置D型正反器370 並透過關閉信號OFF而截止第一輸出信號8〖與第二輸出信號S2。當電源開關信 號重置D型正反器370時，同時也將重置電源閉鎖電路，而解除了由保護電路所 造成的鎖定狀態。 第七圖是依據本創作之一軟啟動電路400的較佳實施例，其包含了放大器 430'電晶體435與定電流源410構成一箝位放大電路，其用於產生參考電壓Vref。 啟動電容器450透過軟啟動輸入端SS連接到定電流源410。當關閉信號〇ff控 制開關462而使其導通時，啟動電容器450因而被短路，因此參考電壓Vref也將 等於零電壓。當關閉信號OFF控制開關462而使其斷路時，啟動電容器450將由 14 M284035 定電流源410充電，而參考電壓vREF也將隨啟動電容器450上的電壓逐漸上升。 並最終被箝制在-參考電壓VRG之準位以產生固定的參考電壓v_，並傳送至第 一放大器160供第一組回授控制之用。 上述所示之軟啟動電路因透過回授迴路使參考電壓Vref軟啟動，其啟動速度 慢且非每一相位(cycle-by-cyde)的控制，因此特別適合等比驅動式電源供應器的自 激正回授驅動電路。另外，功率保護電路330的輸出之過功率保護信號〇pH更透 過開關461耦合至軟啟動電容器450。當電源供應器的輸出功率超過一第四參考 位準VR4時，定電流源420將針對軟啟動電容器45〇放電，以限制電源供應器的 I 最大輸出功率。如此，將可對等比驅動式電源供應器的輸出短路作充分的保護。 因此一旦電源供應器的輸出短路，將重新啟動其軟啟動以限制功率輸出。 第八圖與第九圖為過電壓保護電路310與低電壓保護電路35〇的較佳實施 例。過電壓保護電路310與低電壓保護電路35〇分別包含第一組箝制電壓與第二 組箝制電壓，“過電壓”狀態係表示電源供應器的輪出電壓超過第一組箝制電 壓。另外，“低電壓，狀態則代表電源供應器的輸出電壓低於第二組箝制電壓。 第一組箝制電壓係由第三參考位準VR3、電阻515〜519所達成，配合比較器 512〜514與或閘511進行過電壓保護，而第二組箝制電壓則係由第三參考位準 . Vr3、電阻525〜529所達成，配合比較器522〜524與或閘521進行低電壓保護。 當有“過電壓”或“低電壓’’狀況發生時，保護電路（310與350)將在一延遲時 間後分別輸出一過電壓保護訊號OVP及一低電壓保護訊號UVP以截止第一輸出 信號Si與第二輸出信號h，進而關閉電源供應器。延遲時間則是分別由延遲電路 510與520決定。 第十圖為過電流保護電路320的較佳實施例，其包含有比較器532〜534、定 電流源538〜539、電阻535〜537、或閘S31以及延遲電路530。其中定電流源538 〜539與電阻535〜537各產生一箝制位準在電壓En〜El(如第一圖中之電壓El、 Ed與電流偵測端〜〜ei之間。而電源供應器的輸出電流經過阻抗96、92、93等 在電壓Εη-Ε!與電壓輸入端Vn〜間各別製造一電壓降。當電壓降大於該箝 15 M284035 制位準時’比較為將透過或閘531以及延遲電路530的延遲時間後，截止第一輸 出信號8!與第二輪出信號&，進而關閉電源供應器。因此，經由改變電阻535〜 537的電阻值便可改變各組輸出之“過電流保護，，的電流箝制位準。 第十一圖為過功率保護電路330的較佳實施例。其中包含比較器562與563， 其各具備了第四參考位準Vr4及第五參考位準VRS。當電源供應器的輸出功率超 過第五參考位準VRS時，過功率保護電路330將在一延遲時間後，截止第一輸出 信號Si與第二輸出信號S；2，進而關閉電源供應器。該延遲時間是由延遲電路560 所決疋。當電源供應器的輸出功率超過第四參考位準VR4，該過功率保護電路33❶ 將立即截止第一輸出信號S!與第二輸出信號S2，進而立即關閉電源供應器。 第十二圖係繪示介面電路340，其包含電源開關電路與信號偵測電路，其中 該電源開關電路包含比較器571、反彈跳電路(debounce circuit) 575、及閘585以 及反相器583。比較器571具有一第七參考位準VR7。當電源開關信號的電壓位準 咼於或低於第七參考位準Vr7時，電源開關電路將在經過一時間（由反彈跳電路 575決定）確認後，經由及閘585所產生的信號ON來控制第一輸出信號&與第 一輸出k號S2 ’進而開啟或關閉電源供應器。而信號偵測電路包含比較器572、 反彈跳電路576、反或閘587、反相器584、586、正反器578以及延遲電路581。 當變壓器10之信號低於第六參考位準Vr6時’將透過一時間（由反彈跳電路576 決定）確認後，再經由反或閘587所產生的信號A O F來重置其電源狀況信號v p G。 此外經過反相器586，其電源開關電路在關閉第一輸出信號Si與第二輸出信號心 前’也將先由信號AOF重置該電源狀況信號VPG。另外，當保護電路310、350、 過電流保護電路32〇以及過功率保護電路330在關閉電源供應器時，若變壓器10 之信號的電壓位準已高於第六參考位準Vr6，則電源供應器將被關閉並閉鎖。但 是當保護電路310、350、過電流保護電路320以及過功率保護電路330在關閉電 源供應器前，若變壓器10之信號的電壓位準已低於第六參考位準VR6，則在電源 供應為被關閉後，並經過一延遲時間（由延遲電路581所決定），將再啟動電源 16 M284035 因保護電路的誤動作而關 供應器。此一功能將避免在關 凡甘wI源供應器的過程中 閉並閉鎖電源供應器。 藝 範 雜本創作已雜佳實施例揭露如上，财並義嫌林辦，任何孰習此技 者’在不脫離本創作之精神和範圍 ^ 耗圍内胃可作些許之更動與潤飾，因此本創作之保護 圍虽視後附之申請專利範圍所界定 【圖式簡單說明】 =所附之圖表是时清楚描述本創作，並引用與包 圖表描繪出本創作的實施例，並配合詳細說明部分，用以解釋本創作的原:。The first feedback input terminal IN is connected to a first input (here, a negative input) of the first amplifier 160. The first feedback input IN is further coupled to the output of the power supply ' for providing a first set of feedback control of the power supply. The first amplifier output COM is coupled to the output of the first amplifier 160 to provide compensation for feedback stability. The soft-start circuit 4⑽ is connected to the soft-start capacitor 450 (shown in the seventh figure) via the soft-start input terminal SS, and is used to set the soft-start time of the power supply. The soft-start wheel-in terminal SS is further coupled to the second input (here, the positive input) of the first amplifier 160 to provide a first amplifier-reference voltage vREF. The output circuit outputs the first output signal 81 and the second output signal S2 via the first output terminal ουτί and the second output terminal OUT2 respectively according to the output of the first amplifier 160 to couple and drive the first switch 50 in the power supply. And second switch 60. The first changeover switch 50 and the second changeover switch 60 are connected to the transformer 10 of the power supply, so as to control the output of the power supply. The voltage input terminal VfW, the current detection terminal en ~ e | and the power detection terminal 0pp are coupled to the power supply. The signal detection terminal UVAC is coupled to the transformer 10 of the power supply. The protection unit 300 is connected to the voltage input terminal (ie, the output of the power supply) to control the output voltage of the power supply. The protection unit is also connected to the current _ terminal 6 „~ e 丨 to detect the round current of the power supply with the voltage wheel input terminals Vn to v 丨. The protection I 7L 3GG is more transparent to the power detection terminal 〇pp to detect The output power of the power supply, and the over-power protection signal OPH is output according to the result. The protection unit is also connected to the signal test terminal UVAC to detect the voltage level of the signal of the transformer 10 — 1 and a half early.疋 300 receives a power switch signal through the power switch input terminal PSON, and turns off the turn-off number 0FF according to the wheel & ^ I 输出. The output circuit decides to turn on and off the power supply according to the output of the protection unit 300. 11 M284035 Among them, the control device in the third figure is further based on the voltage input terminals Vn ~ Vi, the signal detection terminal UVAC, and the power switch input terminal PSON, and is output through the power condition indicator terminal PG—the power condition letter? Tiger ~ to indicate the power supply. The rotation status of the generator. The vibrator 2 generates-the exhaustion signal PLS and a spur tooth signal Vsw. The subtractor 200 is connected to the resistor 205 (illustrated in the fifth figure) through the oscillation frequency setting terminal RI, so that Determined according to the resistance 2G5 Oscillation frequency. The oscillation signal PLS is connected to the trigger input of the T-type inverter 151 and the D-type inverter 152. The sawtooth wave signal vSAW is coupled to the first input (the negative input here) of the comparator 165. The comparator 165 The second input (positive input here) is coupled to the output of the first amplifier 160. The comparator 165 compares the output of the sawtooth wave number K Vsaw with the output of the first amplifier 160 and outputs a pulse wave modulation signal. The comparator The output of 1 is connected to one input of the AND gate 158. The other input of the AND gate 158 is coupled to the off signal OFF through the inverter 159. The output of the AND gate 158 is used to reset the rotation of the D-type flip-flop 152 The inverse gates 156 and 157 respectively output the first output signal Si and the second output signal §2 to the first output terminal OUT1 and the second output terminal OUT2. The inputs of the inverse gate 156 are the oscillation signal pls, Power protection signal OPP, first output of T-type flip-flop 151 and first output of D-type flip-flop 152. The inputs of the inverse gate 157 are the oscillation signal PLS, the overpower protection signal 〇ρτ, and the τ-type positive and negative. The second output of the device 51 and the first output of the D-type flip-flop 152. Therefore, the output The output circuit can determine the switching frequency of the first output signal 8! And the second output signal S2 according to the output of the oscillator 2000. In addition, the control device of the third figure further includes a second feedback input terminal FB, which can be controlled The unit 128 and the second amplifier output terminal VA. The controllable unit 128 includes a second amplifier 162 and a transistor 163. The second feedback input terminal FB is connected to one of the inputs of the second amplifier 162 (here, the positive input). The second feedback input terminal FB is further coupled to the output of the power supply to provide a second set of feedback inputs of the power supply. The second amplifier output terminal VA is coupled to the output of the second amplifier 162 via the transistor 163 for the second group of feedback control. Among them, the other input (the negative input here) of the second amplifier 162 is coupled to the first reference level VR1. The fourth diagram is a voltage adjustment circuit formed by using the controllable unit 128 according to the embodiment of the present creation. . Please refer to the fourth figure. For example, this voltage regulating circuit can be used as the voltage regulator 100 in the first figure. It includes 12M284035 including transistor U0, resistors 121 ~ 125, and capacitor 126. In the voltage regulator 100, the source of the transistor ^ ❶ receives the voltage A and generates the output voltage%. The gate of the transistor 接 is connected to the voltage ®2 through the resistor surface. The output of the second amplifier VA is connected to the gate of transistor η❶ and one end of capacitor 126. The other end of capacitor 126 is coupled to the second feedback input terminal through resistor 125]?] 8. Resistors 121 and 122 are connected in series at the output voltage% And the ground, and the second feedback input terminal fb is coupled between the resistors ΐ2ι and 122. The fifth figure is a preferred embodiment of the oscillation circuit 200, wherein the resistor 205 is connected to a voltage through the oscillation frequency setting terminal Ri. Current-to-current converter. This voltage-to-current converter is composed of amplifier 210 and transistor 211. The second reference level VR2 is connected to the input (positive input) of amplifier 210, and the second reference level VR2 and The resistor 205 generates a frequency setting current. The transistors 212 to 217 form a current mirror circuit. This current mirror circuit is used to generate the reference current IR and the charging current and the discharging current required by the oscillator. The oscillation control circuit is composed of comparators 230 and 235. ,anti Gates 240, 245 and inverter 250. The oscillation control circuit generates an oscillation signal PLS to control switches 221 and 222. The switches 221 and 222 control the charging and discharging currents to capacitor 225, respectively, and generate a sawtooth wave signal vSAW The false tooth wave signal VsAW is between the clamped voltages Vh and Vl. The sixth diagram is a preferred embodiment of a protection unit 300, which includes an overvoltage protection circuit 310, a low voltage protection circuit 350, and an overcurrent protection. Circuit 320, overpower protection circuit 330, interface circuit 34o, power status indication circuit and power lockout circuit. Overvoltage protection circuit 310 and low voltage protection circuit 350 are connected to voltage input terminals Vn ~ Vi for detecting power supply Whether the output voltage of the device is too high or too low. The power status indication circuit is composed of an OR gate 361, an OR gate 375, a delay circuit 365, and a transistor 380, and is used to output a power condition signal VpG to the power condition indication. Terminal PG, this power status signal indicates the output status of the power supply. When the power supply output is normal, it means the overvoltage protection circuit 310 and the low voltage When the protection circuit 35 does not detect any over-voltage or low-voltage output, after confirming the delay time of the delay circuit 365, it will output the power status signal vpg via the power status indicator PG. 13 M284035 Overpower / m «Warranty Circuit 320 is connected to the current detection terminal, with voltage input terminal, ~, used to measure the overcurrent status of the output current of the power supply. Overpower protection circuit 33 ° is connected to the power detection OPP 'for detection The output power of the power supply is measured. The interface circuit 34G includes a signal price measurement circuit and an electric circuit. The circuit of the money system is connected to the transformer through the test terminal UVAC_, which is used to detect the voltage level of the signal of Wei 15 1G. quasi. The power switch M receives the power switch signal through the power switch input terminal PSON to determine whether the power supply is turned on or off. In addition, the interface circuit state cooperates with the output of the voltage protection circuits 310 and 350, the output of the signal detection circuit, and the power switch signal, etc., and outputs the power status signal VpG through the power status indication terminal PG, which is used to indicate the status of the power supply. • conditions. When the signal detection circuit of the t-interface circuit 340 detects that the magic voltage level of the transformer No. 10 is lower than a sixth reference level Vr6 through the signal detection terminal UVAC, the power state signal VPG is turned off after a delay. . " As for the power supply blocking circuit, it is composed of OR gate 362, inverter gate 376, delay circuit 366, inverter 371, and D-type flip-flop 370, which are used to generate a shutdown signal 0FF. The power switch input ps0N receives the power switch signal and is used to control the shutdown signal 0FF. When the power switch signal is turned on, the first output signal §1 and the second output signal core will be output through the off signal OFF. At this time, if any malfunction of the power supply occurs, the corresponding protection circuit will be activated, and the lock-off signal OFF will be turned off, and the first output signal Si and the second output signal will be cut off. When the power switch signal is turned off, the power condition will be turned off first. Indication terminal. The power state signal Vpg of the PG resets the D-type flip-flop 370 after the delay time of the delay circuit 366, and turns off the first output signal 8 and the second output signal S2 by turning off the signal. When the power switch signal resets the D-type flip-flop 370, the power supply blocking circuit is also reset, and the lock state caused by the protection circuit is released. The seventh figure is a preferred embodiment of a soft-start circuit 400 according to the present invention, which includes an amplifier 430 ′ transistor 435 and a constant current source 410 to form a clamp amplifier circuit for generating a reference voltage Vref. The startup capacitor 450 is connected to the constant current source 410 through the soft-start input SS. When the signal switch 462 is turned off to turn on the switch 462, the startup capacitor 450 is short-circuited, so the reference voltage Vref will also be equal to zero voltage. When the signal OFF control switch 462 is closed and disconnected, the startup capacitor 450 will be charged by the constant current source 410, and the reference voltage vREF will gradually increase with the voltage on the startup capacitor 450. Finally, it is clamped at the level of the reference voltage VRG to generate a fixed reference voltage v_, and transmits it to the first amplifier 160 for the first group of feedback control. The soft-start circuit shown above soft-starts the reference voltage Vref through a feedback loop. Its slow start-up speed and non-cycle-by-cyde control make it particularly suitable for self-propelled drive power supplies. Excited feedback drive circuit. In addition, an overpower protection signal 0pH output from the power protection circuit 330 is further coupled to the soft-start capacitor 450 through the switch 461. When the output power of the power supply exceeds a fourth reference level VR4, the constant current source 420 will discharge the soft-start capacitor 45 ° to limit the maximum output power of the power supply. In this way, the output short circuit of the ratio-driven power supply can be fully protected. So if the output of the power supply is shorted, it will restart its soft start to limit the power output. The eighth and ninth figures are preferred embodiments of the over-voltage protection circuit 310 and the low-voltage protection circuit 350. The over-voltage protection circuit 310 and the low-voltage protection circuit 350 respectively include a first group of clamping voltages and a second group of clamping voltages. The "overvoltage" state indicates that the output voltage of the power supply exceeds the first group of clamping voltages. In addition, "low voltage, the status indicates that the output voltage of the power supply is lower than the second set of clamping voltages. The first set of clamping voltages is achieved by the third reference level VR3 and resistors 515 ~ 519, in cooperation with comparators 512 ~ 514 The OR gate 511 performs over-voltage protection, and the second set of clamping voltage is achieved by the third reference level. Vr3 and resistors 525 ~ 529 are used to cooperate with the comparators 522 ~ 524 and OR gate 521 for low voltage protection. When there is When an "over-voltage" or "low-voltage" condition occurs, the protection circuits (310 and 350) will output an over-voltage protection signal OVP and a low-voltage protection signal UVP respectively after a delay time to cut off the first output signals Si and The second output signal h turns off the power supply. The delay time is determined by the delay circuits 510 and 520, respectively. The tenth figure is a preferred embodiment of the overcurrent protection circuit 320, which includes comparators 532 ~ 534, constant current sources 538 ~ 539, resistors 535 ~ 537, OR gate S31, and delay circuit 530. The constant current sources 538 to 539 and the resistors 535 to 537 each generate a clamping level between the voltages En to El (such as the voltages El and Ed in the first figure and the current detection terminals to ~ ei.) The output current passes through impedances 96, 92, 93, etc. to create a voltage drop between the voltage Εη-Ε! And the voltage input terminal Vn ~. When the voltage drop is greater than the clamp 15 M284035 level, 'compared to the pass or gate 531 and After the delay time of the delay circuit 530, the first output signal 8! And the second output signal & are turned off, and then the power supply is turned off. Therefore, by changing the resistance value of the resistors 535 to 537, the “over Current protection, current clamp level. The eleventh figure is a preferred embodiment of the overpower protection circuit 330. It includes comparators 562 and 563, each of which has a fourth reference level Vr4 and a fifth reference level VRS. When the output power of the power supply exceeds the fifth reference level VRS, the overpower protection circuit 330 will cut off the first output signal Si and the second output signal S after a delay time; and then turn off the power supply The delay time is determined by It is determined by the delay circuit 560. When the output power of the power supply exceeds the fourth reference level VR4, the overpower protection circuit 33 will immediately cut off the first output signal S! And the second output signal S2, and then immediately turn off the power supply The twelfth figure is an interface circuit 340, which includes a power switch circuit and a signal detection circuit. The power switch circuit includes a comparator 571, a debounce circuit 575, a gate 585, and an inverter 583. Comparator 571 has a seventh reference level VR7. When the voltage level of the power switch signal is at or below the seventh reference level Vr7, the power switch circuit will pass a time (determined by the bounce circuit 575) After confirming, the first output signal & and the first output k number S2 'are controlled by the signal ON generated by the AND gate 585 to turn on or off the power supply. The signal detection circuit includes a comparator 572 and a bounce circuit 576 , NOR gate 587, inverters 584, 586, flip-flop 578, and delay circuit 581. When the signal of transformer 10 is lower than the sixth reference level Vr6 ', it will pass through a time (by the bounce circuit (576 decision) After confirmation, the power state signal vp G is reset via the signal AOF generated by the inverse OR gate 587. In addition, the inverter 586 turns off the first output signal Si and the second output signal. The heart will also reset the power condition signal VPG by the signal AOF. In addition, when the protection circuit 310, 350, the overcurrent protection circuit 32o, and the overpower protection circuit 330 shut down the power supply, if the signal of the transformer 10 If the voltage level is higher than the sixth reference level Vr6, the power supply will be shut down and locked. However, before the protection circuits 310, 350, the overcurrent protection circuit 320, and the overpower protection circuit 330 are turned off before the power supply is turned off, if the voltage level of the signal of the transformer 10 is lower than the sixth reference level VR6, the power supply is After being turned off, and after a delay time (determined by the delay circuit 581), the power supply will be restarted. M284035 will turn off the power supply due to the malfunction of the protection circuit. This function will avoid shutting down and blocking the power supply during the process of shutting down the wI source. The fine example of the creation of the art fan's miscellaneous works has been disclosed as above, and the wealth and righteousness are suspected of being run by the forest. Anyone who practises this technique can't depart from the spirit and scope of this creation. ^ Consuming the inner stomach can make some changes and retouching, so Although the protection scope of this creation is defined by the scope of the attached patent application [Simplified illustration of the diagram] = The attached chart is a clear description of the creation at the time, and the reference and package diagrams describe the embodiment of the creation, and cooperate with the detailed description Part to explain the original of this creation :.
第一圖為一般等比驅動式電源供應器之電路。 第目第一 F圖刀別成明第一圖之等比驅動式電源供應器的工作時序與狀態。 第三圖是依據本創作說明―種等比驅動式電源供應器之控制裝置。 、 第四圖為依據本創作說明一種電壓調節器。 第五圖為依據本創作說明一種振盪器。 第六圖為依據本創作說明一種保護單元。 弟七圖依據本創作說明一種軟啟動電路。 第八圖依據本創作說明一種過電壓保護電路。 第九圖依據本創作說明一種低電壓保護電路。 第十圖依據本創作說明一種過電流保護電路。 第十一圖依據本創作說明一種過功率保護電路。 第十二圖依據本創作說明一種介面電路。 【主要元件符號說明】 10、20 :變壓器 31、32、52、62、71 〜74 :二極體 33、40、45、81 〜85、126、225、450 :電容 34〜36、55、65、92、93、96、98、99、121 〜123、125、205、515〜519、 525〜529、535、537 :阻抗 17 M284035 50、51、60、61、110、163、211 〜217、380 :電晶體 91、95 ··電感 100 :電壓調節器 128 :可控單元 151、152、370、578 :正反器 156、157、240、245、375、376 :反及閘 158、 585 :及閘 159、 250、371、583、584、586 ··反相器 160、 162、210、430 ··放大器The first figure shows the circuit of a general proportional power supply. The first F chart of the head is the working sequence and status of the ratio-driven power supply of the first chart. The third picture is based on the description of this creation-the control device of a proportional drive power supply. Figure 4 illustrates a voltage regulator based on this creation. The fifth figure illustrates an oscillator based on this creation. Figure 6 illustrates a protection unit based on this creation. Brother Qitu illustrates a soft-start circuit based on this creation. The eighth figure illustrates an overvoltage protection circuit based on this creation. The ninth figure illustrates a low-voltage protection circuit based on this creation. The tenth figure illustrates an overcurrent protection circuit based on this creation. Figure 11 illustrates an overpower protection circuit based on this creation. Figure 12 illustrates an interface circuit based on this creation. [Description of main component symbols] 10, 20: Transformers 31, 32, 52, 62, 71 to 74: Diodes 33, 40, 45, 81 to 85, 126, 225, 450: Capacitors 34 to 36, 55, 65 , 92, 93, 96, 98, 99, 121 to 123, 125, 205, 515 to 519, 525 to 529, 535, 537: Impedance 17 M284035 50, 51, 60, 61, 110, 163, 211 to 217, 380: Transistor 91, 95Inductance 100: Voltage regulator 128: Controllable unit 151, 152, 370, 578: Flip-flop 156, 157, 240, 245, 375, 376: Reverse gate 158, 585: AND gates 159, 250, 371, 583, 584, 586 · · Inverter 160, 162, 210, 430 · · Amplifier
165、230、235、512 〜514、522 〜524、532 〜534、562、563、571、 572 :比較器 200 :振盪器 221、222 ·•開關 300 :保護單元 310 :過電壓保護電路 320 :過電流保護電路 330 :過功率保護電路 340 :介面電路 350 :低電壓保護電路 361、 587 :反或閘 362、 511、521、531 :或閘 365、366、510、520、530、560、581 :延遲電路 410、420、538〜539 ··電流源 575、576 :反彈跳電路 COM :第一放大器輸出端 en-et :電流偵測端 IN :第一回授輸入端 FB :第二回授輸入端 ΟΡΗ :過功率保護信號 18165, 230, 235, 512 to 514, 522 to 524, 532 to 534, 562, 563, 571, 572: Comparator 200: Oscillator 221, 222Switch 300: Protection unit 310: Overvoltage protection circuit 320: Over current protection circuit 330: Over power protection circuit 340: Interface circuit 350: Low voltage protection circuit 361, 587: Reverse OR gate 362, 511, 521, 531: OR gate 365, 366, 510, 520, 530, 560, 581 : Delay circuits 410, 420, 538 ~ 539 ·· Current sources 575, 576: Bounce circuit COM: First amplifier output terminal en-et: Current detection terminal IN: First feedback input terminal FB: Second feedback Input ΟΡΗ: Overpower protection signal 18
M284035 OPP :功率偵測端 OVP :過電壓保護訊號 PG :電源狀況指示端 PLS :振盪信號 PSON :電源開關輸入端 RI :振盪頻率設定端 OUT1 :第一輸出端 OUT2 :第二輸出端 51 :第一輸出訊號 52 ··第二輸出訊號 SS :軟啟動輸入端 ϋVAC :信號偵測端 UVP :低電壓保護訊號 VA :第二放大器輸出端 VPG :電源狀況信號 VfVi :電壓輸入端 VreF :參考電壓M284035 OPP: Power detection terminal OVP: Overvoltage protection signal PG: Power status indicator PLS: Oscillation signal PSON: Power switch input terminal RI: Oscillation frequency setting terminal OUT1: First output terminal OUT2: Second output terminal 51: No. One output signal 52 ·· Second output signal SS: Soft-start input terminal VAC: Signal detection terminal UVP: Low voltage protection signal VA: Second amplifier output terminal VPG: Power status signal VfVi: Voltage input terminal VreF: Reference voltage
Vro〜Vr7 :參考位準 VsaW :鑛齒波信號 vH與VL :箝限電壓Vro ~ Vr7: Reference level VsaW: Mine tooth wave signals vH and VL: Clamping voltage
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW94214934U TWM284035U (en) | 2005-08-30 | 2005-08-30 | Control circuit for proportional driving switching power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| TW94214934U TWM284035U (en) | 2005-08-30 | 2005-08-30 | Control circuit for proportional driving switching power supply |
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| Publication Number | Publication Date |
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| TWM284035U true TWM284035U (en) | 2005-12-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685961A (en) * | 2009-08-03 | 2010-03-31 | 深圳创维－Rgb电子有限公司 | Power supply circuit of audio frequency power amplifier |
| TWI458228B (en) * | 2011-10-26 | 2014-10-21 | Acbel Polytech Inc | Soft start control method and device for power supply |
| TWI496407B (en) * | 2012-03-23 | 2015-08-11 | Delta Electronics Inc | Power supply system and method of controlling current thereof |
| TWI556565B (en) * | 2014-05-07 | 2016-11-01 | 大同股份有限公司 | Power supply module and control method thereof |
| CN113497567A (en) * | 2020-04-07 | 2021-10-12 | 通嘉科技股份有限公司 | Power supply with limited power protection and related control method |
| US12115967B2 (en) | 2021-12-27 | 2024-10-15 | Industrial Technology Research Institute | Power control device and power control method |
| TWI883460B (en) * | 2023-06-13 | 2025-05-11 | 新唐科技股份有限公司 | Dynamic protection circuit, power supply circuit and control method thereof |
-
2005
- 2005-08-30 TW TW94214934U patent/TWM284035U/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685961A (en) * | 2009-08-03 | 2010-03-31 | 深圳创维－Rgb电子有限公司 | Power supply circuit of audio frequency power amplifier |
| CN101685961B (en) * | 2009-08-03 | 2013-10-30 | 深圳创维－Rgb电子有限公司 | Power supply circuit of audio frequency power amplifier |
| TWI458228B (en) * | 2011-10-26 | 2014-10-21 | Acbel Polytech Inc | Soft start control method and device for power supply |
| TWI496407B (en) * | 2012-03-23 | 2015-08-11 | Delta Electronics Inc | Power supply system and method of controlling current thereof |
| TWI556565B (en) * | 2014-05-07 | 2016-11-01 | 大同股份有限公司 | Power supply module and control method thereof |
| CN113497567A (en) * | 2020-04-07 | 2021-10-12 | 通嘉科技股份有限公司 | Power supply with limited power protection and related control method |
| TWI765345B (en) * | 2020-04-07 | 2022-05-21 | 通嘉科技股份有限公司 | Power supplies with limited power protection and relevant control methods |
| US12115967B2 (en) | 2021-12-27 | 2024-10-15 | Industrial Technology Research Institute | Power control device and power control method |
| TWI883460B (en) * | 2023-06-13 | 2025-05-11 | 新唐科技股份有限公司 | Dynamic protection circuit, power supply circuit and control method thereof |
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