1343181 099年06月23日修正替換頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種電源裝置，特別涉及一種電源軟啟動裝 置。 【先前技術】 [0002] 開關電源以其體積小、性能好和使用方便的特點，在通 訊、網路、工業控制和消費性電子產品等領域得到廣泛 應用。開關電源在電路中用於為電路的工作提供電能， 是電路工作最基礎的要求。1343181 Revision of the replacement page on June 23, 099. Description of the Invention: [Technical Field] [0001] The present invention relates to a power supply device, and more particularly to a power soft start device. [Prior Art] [0002] Switching power supplies are widely used in communications, networking, industrial control, and consumer electronics, due to their small size, high performance, and ease of use. The switching power supply is used in the circuit to provide power for the operation of the circuit, which is the most basic requirement for circuit operation.
[0003] 開關電源的輸入電路通常採用電橋.整流加電容濾波的形 式。在輸入電路合閘瞬間’ 的初始電 壓為零，輸入濾波t容迅瞬時衝擊 ^eBSSBSMRSBBBBBK! 電流，也稱為浪湧電流，該衝擊電流遠:次.於穩態輸入電 流。如圖1所示，大功率開關電源輸入秦'角較大容量的滅 波電容，其衝擊電流可達140A '在開，關電源接通的瞬間 ，如此大的衝擊電流往往會導致後ϋ路的損壞，如濾 波電容，造成開關電源無法正常工作。因此，開關電源 中需設置防止衝擊電流的軟啟動電路，以保證開關電源 的正常可靠的運行。 [0004] 如圖2所示，其為傳統的採用熱敏電阻的軟啟動電路。熱 敏電阻R1的一端與整流器D1的正輸出端相連，熱敏電阻 R1的另一端與電解電容C1的正極相連，電解電容C1的負 極與整流器D1的負輸出端相連。交流電藉由整流器D1整 流為直流電後，藉由熱敏電阻R1給電解電容C1充電。熱 敏電阻R1具有負溫度係數特性，其電阻值隨著溫度的升 095148494 表單編號Α0101 第4頁/共18頁 0993220748-0 1343181 099年06月23日後正替換頁 高而迅速減小，因此在電源接通的瞬間，熱敏電阻R1的 阻值較大，起到限制衝擊電流的作用。隨著流過熱敏電 阻R1電流量逐漸增加，熱敏電阻R1溫度升高，其阻值則 變小，電路趨於正常工作狀態。然而採用熱敏電阻R1防 止衝擊電流一般適用於小功率開關電源。由於熱敏電阻 R1的熱慣性，重新恢復高阻值狀態需要一定時間。所以 ，當電源斷電後又需要很快接通的情況，便起不到限制 衝擊電流的作用。此外，實際工作中，熱敏電阻R1容易 被燒壞，整個電路無法工作。 【發明内容】 [0005] 有鑒於此，有必要提供一種穩定的電源軟啟動裝置。 [0006] 一種電源軟啟動裝置包括電源輸入端、分壓調節電路、 第一延時電路、第一開關電路、第二延時電路、第二開 關電路和電源輸出端，該分壓調節電路用於將來自該電 源輸入端的輸入電流導向該第一延時電路，並為該第一 開關電路提供第一開啟電壓；該第一延時電路用於接收 該輸入電流進行延時動作：該第一開關電路用於在該第 一延時電路延時動作完成後，接收該第一開啟電壓並打 開，同時將該輸入電流導向該第二延時電路並為該第二 開關電路提供第二開啟電壓；該第二延時電路用於接收 該輸入電流進行延時動作：該第二開關電路用於在該第 二延時電路延時動作完成後，接收該第二開啟電壓並打 開，同時將該輸入電流導向該電源輸出端以輸出。 [0007] 如上所述，電流流經電源軟啟動裝置時，需要經過二次 延時才能輸出，若輸入電流的瞬間存在衝擊電流，該衝 095148494 表單編號A0101 第5頁/共18頁 0993220748-0 1343181 099年06月23日 擊電流會在該二次延時中消耗，而不會直接從電源輸出 端輸出，以保障後續電路的正常工作。斷電後第—開關 電路和第二開關電路因為沒有開啟電壓的輸人而關閉， 為下一次通電做好準備。 【實施方式】 [0008] 如圖3所示，一較佳實施例的電源軟啟動裝置1〇包括電源 輸入端100、分壓調節電路11()、第一延時電路13〇、第 一開關電路150、第二延時電路丨7〇、第二開關電路19〇 和電源輸出端2 0 0。 [0009] 電源輸入端100分別與分壓調節電路i〗θ、第一開關電路 150和第二開關電路19〇相^^^|4馳公厭 調節電路110相連。 第-壓調節電 路110、第二延時電路i70和第二開關^^90相連。電 源輸出端2 0 0與第二開關電路1 9 〇相連V %源軟啟動裝置 10初始狀態時，第一開關電和|二闢關電路19〇均 處於關閉狀態，也即斷開狀態，電硃不能直接從電源輸 入端100流向電源輸出端2〇〇。 [0010] 分壓調節電路11 〇用於將來自電源輸入端丨〇〇的輸入電流 導向第一延時電路130 ’並為第一開關電路15〇提供第一 開啟電壓。第一延時電路丨3〇用於接收所述輸入電流進行 延時動作。第一開關電路15〇用於在第一延時電路丨3〇延 時動作完成後’接收所述第一開啟電壓並打開（導通） ，同時將輸入電流導向第二延時電路1 7 〇並為第二開關電 路190提供第二開啟電壓。第二延時電路17〇用於接收所 述輸入電流進行延時動作◊第二開關電路19〇用於在第二 095148494 表單編號A0101 第6頁/共18頁 0993220748 1343181 099年06月23日修正替换頁 延時電路170延時動作完成後，接收所述第二開啟電壓並 打開，同時將所述輸入電流導向電源輸出端2〇〇以輸出。 輸入電流斷電後，第一開關電路1 5 〇和第二開關電路1 9 〇 由於沒有開啟電壓的提供而關閉，為下一次的通電做好 準備。 [0011] 請參閱圖4 ’其為電源軟啟動裝置10的具體電路圖。分壓 調節電路110包括電性串聯的分壓電阻R10和可變電阻 W10，其中分壓電阻R10的一端與電源輸入端1〇〇相連， 另一端與可變電阻W10 —固定端相連；可變電阻w 10的另 一固定端與第一延時電路130相連，可變電阻w 1〇的活動 端與第一開關電路150相連》 [0012] 第一延時電路130包括相互並聯的第一濾波電eC1〇、穩 壓二極體D10和第一電解電容C11 ^其中第—濾波電容 C10的一端、穩壓二極體D1〇的負極以及第一電解電容 C11的正極共同連接，並同時與可變電阻wl〇的一端相連 ;第一濾波電容C10的另一端、穩壓二極體D1()的正極以 及第一電解電容C11的負極共同接地。[0003] The input circuit of a switching power supply is usually in the form of a bridge, rectification plus capacitance filtering. At the moment when the input circuit is closed, the initial voltage is zero, and the input filter t is the instantaneous instantaneous impact ^eBSSBSMRSBBBBBK! The current, also called the inrush current, is far: the steady state input current. As shown in Figure 1, the high-power switching power supply inputs the large-capacity annihilation capacitor of Qin's angle, and its inrush current can reach 140A. At the moment when the power is turned on and off, such a large inrush current often leads to the rear sluice. The damage, such as the filter capacitor, causes the switching power supply to not work properly. Therefore, a soft-start circuit for preventing inrush current should be provided in the switching power supply to ensure normal and reliable operation of the switching power supply. [0004] As shown in FIG. 2, it is a conventional soft start circuit using a thermistor. One end of the thermistor R1 is connected to the positive output terminal of the rectifier D1, the other end of the thermistor R1 is connected to the positive terminal of the electrolytic capacitor C1, and the negative electrode of the electrolytic capacitor C1 is connected to the negative output terminal of the rectifier D1. After the alternating current is rectified to direct current by the rectifier D1, the electrolytic capacitor C1 is charged by the thermistor R1. Thermistor R1 has a negative temperature coefficient characteristic, and its resistance value rises with temperature. 095148494 Form No. Α0101 Page 4 of 18 pages 0993220748-0 1343181 After the 23rd of June, 9999, the page height is rapidly reduced, so At the moment when the power is turned on, the resistance of the thermistor R1 is large, which acts to limit the inrush current. As the amount of current flowing through the thermistor R1 gradually increases, the temperature of the thermistor R1 rises, the resistance thereof becomes smaller, and the circuit tends to operate normally. However, the use of thermistor R1 to prevent inrush current is generally applicable to small power switching power supplies. Due to the thermal inertia of the thermistor R1, it takes a certain time to regain the high resistance state. Therefore, when the power supply needs to be turned on quickly after the power is turned off, the impact current is not limited. In addition, in actual operation, the thermistor R1 is easily burnt out and the entire circuit cannot work. SUMMARY OF THE INVENTION [0005] In view of the above, it is necessary to provide a stable power soft start device. [0006] A power soft start device includes a power input terminal, a voltage dividing adjustment circuit, a first delay circuit, a first switching circuit, a second delay circuit, a second switching circuit, and a power output terminal, and the voltage dividing adjusting circuit is configured to An input current from the power input terminal is directed to the first delay circuit, and provides a first turn-on voltage for the first switch circuit; the first delay circuit is configured to receive the input current for a delay action: the first switch circuit is used to After the delay operation of the first delay circuit is completed, receiving the first turn-on voltage and turning on, and directing the input current to the second delay circuit and providing a second turn-on voltage for the second switch circuit; the second delay circuit is used for Receiving the input current for delay operation: the second switch circuit is configured to receive the second turn-on voltage and turn on after the delay action of the second delay circuit is completed, and simultaneously direct the input current to the power output end for output. [0007] As described above, when the current flows through the power soft start device, it needs to be outputted after a second delay. If there is an inrush current at the moment of the input current, the rush 095148494 Form No. A0101 Page 5 of 18 0993220748-0 1343181 On June 23, 099, the current will be consumed in the second delay, and will not be directly output from the power output to ensure the normal operation of the subsequent circuit. After the power is turned off, the first switch circuit and the second switch circuit are turned off because there is no input voltage to turn on the power, so that it is ready for the next power-on. [0008] As shown in FIG. 3, a power soft start device 1A of a preferred embodiment includes a power input terminal 100, a voltage dividing adjusting circuit 11 (), a first delay circuit 13A, and a first switching circuit. 150, a second delay circuit 丨7〇, a second switch circuit 19〇, and a power output terminal 2 0 0. [0009] The power input terminal 100 is respectively connected to the voltage dividing adjustment circuit i θ, the first switching circuit 150, and the second switching circuit 19 〇 ^ 。 。 调节 调节 。 。 。 。 The first voltage regulating circuit 110, the second delay circuit i70 and the second switch are connected. When the power output terminal 200 is connected to the second switch circuit 1 9 V V% source soft start device 10 initial state, the first switch power and the second switch circuit 19 are both in the off state, that is, the off state, the power Zhu can't flow directly from the power input 100 to the power output 2〇〇. [0010] The voltage dividing adjustment circuit 11 is for directing the input current from the power input terminal 第一 to the first delay circuit 130 ′ and providing the first switching circuit 15 〇 with the first turn-on voltage. The first delay circuit 丨3〇 is configured to receive the input current for a delay action. The first switch circuit 15 is configured to 'receive the first turn-on voltage and turn on (on) after the first delay circuit 丨3〇 delay action is completed, and direct the input current to the second delay circuit 1 7 〇 and be the second Switching circuit 190 provides a second turn-on voltage. The second delay circuit 17 is configured to receive the input current for delay operation. The second switch circuit 19 is used in the second 095148494 form number A0101 page 6 / 18 pages 0993220748 1343181 099 June 23 revision replacement page After the delay circuit 170 completes the delay action, the second turn-on voltage is received and turned on, and the input current is directed to the power output terminal 2 to output. After the input current is de-energized, the first switching circuit 15 5 〇 and the second switching circuit 1 9 关闭 are turned off due to the absence of the turn-on voltage supply, ready for the next power-on. [0011] Please refer to FIG. 4' which is a specific circuit diagram of the power soft-start device 10. The voltage dividing adjustment circuit 110 includes a voltage dividing resistor R10 and a variable resistor W10 electrically connected in series, wherein one end of the voltage dividing resistor R10 is connected to the power input terminal 1〇〇, and the other end is connected to the fixed end of the variable resistor W10; The other fixed end of the resistor w 10 is connected to the first delay circuit 130, and the movable end of the variable resistor w 1〇 is connected to the first switch circuit 150. [0012] The first delay circuit 130 includes a first filter electric eC1 connected in parallel with each other. 〇, the voltage regulator diode D10 and the first electrolytic capacitor C11 ^ one of the first filter capacitor C10, the negative pole of the voltage regulator diode D1 以及 and the anode of the first electrolytic capacitor C11 are connected together, and simultaneously with the variable resistor One end of the wl〇 is connected; the other end of the first filter capacitor C10, the anode of the Zener diode D1(), and the cathode of the first electrolytic capacitor C11 are commonly grounded.
[0〇13]第一開關電路1 50包括輸入電阻r丨1、上拉電阻ri 2和NPN 型電晶體T10。其中輸入電阻βΐι的一端與可變電阻们〇 的活動端相連，輸入電阻R11的另一端與電晶體T10的基 極相連；上拉電阻R12的一端與電源輸入端100相連，上 拉電阻R12的另一端與電晶體T10的集電極相連；電晶體 τιο的發射極分別與第二延時電路17〇和第二開關電路 1 9 0相連。 095148494 表單編號Α0101 第7頁/共18頁 0993220748-0 1343181 [0014] 099年06月23日 第二延時電路170包括相互並聯的第二濾波電容C12 '下 拉電阻R13和第二電解電容C13。其中第二濾波電容C12 的一端、下拉電阻R13的一端以及第二電解電容c 13的正 極共同相連’並同時與電晶體Tio的發射極相連；第二濾 波電容C12的另一端、下拉電阻R13的另一端以及第二電 解電容C13的負極共同接地。 [0015][0〇13] The first switching circuit 1 50 includes an input resistor r丨1, a pull-up resistor ri 2, and an NPN-type transistor T10. One end of the input resistor βΐι is connected to the active end of the variable resistor ,, the other end of the input resistor R11 is connected to the base of the transistor T10; one end of the pull-up resistor R12 is connected to the power input terminal 100, and the pull-up resistor R12 The other end is connected to the collector of the transistor T10; the emitter of the transistor τιο is connected to the second delay circuit 17A and the second switching circuit 1906, respectively. 095148494 Form No. 1010101 Page 7 of 18 0993220748-0 1343181 [0014] The second delay circuit 170 includes a second filter capacitor C12', a pull-down resistor R13 and a second electrolytic capacitor C13, which are connected in parallel with each other. One end of the second filter capacitor C12, one end of the pull-down resistor R13, and the anode of the second electrolytic capacitor c 13 are commonly connected 'and simultaneously connected to the emitter of the transistor Tio; the other end of the second filter capacitor C12, the pull-down resistor R13 The other end and the negative electrode of the second electrolytic capacitor C13 are commonly grounded. [0015]
第二開關電路190為一MOS電晶體Q10。MOS電晶體Q10的 漏極與電源輸入端100相連’ MOS電晶體Q10的柵極與電 晶體T10的發射極相連，m〇S電晶體Q1G的源極與電源輸 出端200相連，為防止電流從JJOS電晶體Ql〇的漏極直接 流入襯底（帶箭頭的引腳）丨 的襯底與源極相連，也可以丨The second switching circuit 190 is an MOS transistor Q10. The drain of the MOS transistor Q10 is connected to the power supply input terminal 100. The gate of the MOS transistor Q10 is connected to the emitter of the transistor T10, and the source of the m〇S transistor Q1G is connected to the power supply output terminal 200 to prevent current from flowing. The drain of JJOS transistor Ql〇 directly flows into the substrate (pin with arrow). The substrate of 丨 is connected to the source, or it can be
電晶體Q10 I電位上。 [0016] 電流從電源輸入端1 00輸入後的短時間肉，由於電晶體 T10和MOS電晶體Q10都處於裁止狀態，電流只能透過分 壓電阻R10和可變電阻W10對鼻―雾释電容C11充電。充 • ： · .-The transistor Q10 is at potential. [0016] The short-time meat after the current is input from the power input terminal 100, since the transistor T10 and the MOS transistor Q10 are both in the cutting state, the current can only pass through the voltage dividing resistor R10 and the variable resistor W10 to the nose-mist release. Capacitor C11 is charged. Charge • : · .-
電初始階段，由於分壓電Q以及部分可變電阻W丨〇的 分壓’使A點的電壓不足以棱電晶體τΐο導通。隨著第一 電解電容C11的充電，第一電解電容cil兩端的電壓逐漸 升高’ A點的電壓也逐漸升高。當a點的電壓升高到電晶 體T10的導通電壓時，電晶體T10導通。 [0017] 穩壓二極體D10用於保護第一電解電容cil，防止第一電 解電谷C11兩端電壓過局導致擊穿損壞。當第一電解電容 C11兩端的電壓達到穩壓二極體Dl〇的反向擊穿電壓時， 穩壓二極體D10反嚮導通，以避免第一電解電容(^1兩端 電壓的進一步增高。第一濾波電容C10用於濾除電流中的 095148494 表單編號A0101 第8頁/共18頁 〇993220748-0 1343181 ,___ 099年06月23日按正替換頁 雜波。 [0018] 電晶體T10導通後，從電源輸入端1〇〇輸入的電流經由上 拉電阻R12對第二電解電容C13充電。電晶體T10導通後 ，B點的電壓隨著第二電解電容C13的充電逐漸增加。當B 點的電壓增加到MOS電晶體Q1 〇的開啟電壓時，m〇S電晶 體Q10開始導通’從電源輸入端1〇〇輸入的電流經由M0S 電晶體Q10流向電源輸出端200。基於MOS電晶體Q10的開 關特性，在MOS電晶體Q10的導通期間，MOS電晶體Q10栅 φ 極的電壓大小控制著流過漏極和源極的電流大小。MOS電 晶體Q10開始導通後’隨著第二電解電容C13的繼續充電 ’ B點的電壓繼續增大，使得流過漏極和源極的電流也逐 漸增大。 [0019] 第二濾波電容C12用於濾除電流中的雜波。下拉電阻ri 3 用於在斷電後第一電解電容C11和第二電解電容C13的放 電’為下一次的電源輸出做好準備◊電路斷電後，第一 電解電容C11透過可變電阻W10、輸入電阻R11和下拉電 • 阻13與地連接’進行放電；第二電解電容c 13與下拉電阻 13形成回路，並進行放電。 [0020] 請參閱圖5，其為電源軟啟動裝置1〇的輸入電流3〇〇和輸 出電流301的曲線示意圖，從圖中可以看出，輸入電流 300的開始階段有一個衝擊電流，輸出電流3〇ι比輸入電 流300出現的要晚，且輸入電流3〇1為逐漸增加，最終達 到平穩狀態。請同時參閱圖6，其為電源軟啟動裝置1 〇的 輸入電壓500和輸出電壓501的曲線示意圖，由於輸出電 流300的開始階段存在一個衝擊電流，使得輸入電壓 095148494 表單編號A0101 第9頁/共18頁 0993220748-0 1343181 [0021] 099年06月23日提E替换頁 開始較高，當衝擊電流過去後，輸出電流3〇〇再逐漸降低 到平穩狀態。輸出電壓501則與輸出電流3〇〇相對應，逐 漸升高到平穩狀態。 上述電源軟啟動裝置10，藉由第一電解電容C11和第二電 解電容C1 3的二階充電延時，並同時配合使用二個開關元 件.電晶體T10和MOS電晶體Q10，使得輸入電流中的衝 擊電流不會直接從電源輸出端200輸出，而在兩個延時階 段消耗，從而避免了衝擊電流對後續電路的損害。另外 ’由於MOS電晶體Q10的開關特性，通過其電流的大小隨 著第二電解電容C13充電的增加而增加，因此電源輸出端 200的㈣f流是逐漸增大電路的穩定 工作》電源軟啟動裝置10屬阻W10的調 節’控制第一電解電容C11的延時時間:轉控制電源輸出 端200的輸出。其中，本實施例的電晶^>1〇和M0S電晶 體Q1 0僅為壓控開關元件的严例丨;開叼特气係藉由其一端 的電壓來控制其另外兩端岣、導11¾¾‘止‘，:且三極管包括 NPN型和PNP型，MOS電晶體包:括:N^道型和p溝道型，其 均能實現開關功能，只是對輸入電壓的要求不同。因此 ’本實施例中的電晶體T10和MOS電晶體Ql〇可由其中的 任意一種代替，並對應調整相關電路。 【圖式簡單說明】 圖1為衝擊電流示意圖。 圖2為常用電源軟啟動電路原理圖。 圖3為一較佳實施例的電源軟啟動裝置原理框圖。In the initial stage of the electric power, the voltage at the point A is insufficient due to the partial voltage of the divided piezoelectric Q and the partial variable resistor W, and the piezoelectric crystal τ ΐ is turned on. As the first electrolytic capacitor C11 is charged, the voltage across the first electrolytic capacitor cil gradually rises. The voltage at the point A also gradually increases. When the voltage at point a rises to the on-voltage of the electric crystal T10, the transistor T10 is turned on. [0017] The voltage stabilizing diode D10 is used to protect the first electrolytic capacitor cil, preventing the voltage breakdown across the first electrolytic electricity valley C11 from causing breakdown damage. When the voltage across the first electrolytic capacitor C11 reaches the reverse breakdown voltage of the Zener diode D1〇, the Zener diode D10 is reverse-conducted to avoid further increase of the voltage across the first electrolytic capacitor (^1) The first filter capacitor C10 is used to filter out the current 095148494 Form No. A0101 Page 8 / Total 18 Page 〇 993220748-0 1343181 , ___ June 23, 2009 Press the positive page to replace the clutter. [0018] Transistor T10 After being turned on, the current input from the power input terminal 1〇〇 charges the second electrolytic capacitor C13 via the pull-up resistor R12. After the transistor T10 is turned on, the voltage at point B gradually increases with the charging of the second electrolytic capacitor C13. When the voltage of the point is increased to the turn-on voltage of the MOS transistor Q1 ,, the m〇S transistor Q10 starts to conduct. The current input from the power input terminal 1〇〇 flows to the power output terminal 200 via the MOS transistor Q10. Based on the MOS transistor Q10 The switching characteristic, during the on period of the MOS transistor Q10, the voltage of the gate φ of the MOS transistor Q10 controls the magnitude of the current flowing through the drain and the source. After the MOS transistor Q10 starts to conduct, the second electrolytic capacitor follows Continue charging of C13 'B The voltage of the point continues to increase, so that the current flowing through the drain and the source also gradually increases. [0019] The second filter capacitor C12 is used to filter out the clutter in the current. The pull-down resistor ri 3 is used after the power is turned off. The discharge of the first electrolytic capacitor C11 and the second electrolytic capacitor C13 is prepared for the next power output. After the circuit is powered off, the first electrolytic capacitor C11 passes through the variable resistor W10, the input resistor R11, and the pull-down resistor 13 and The ground connection 'discharges; the second electrolytic capacitor c 13 forms a loop with the pull-down resistor 13 and discharges. [0020] Please refer to FIG. 5, which is the input current 3〇〇 and the output current 301 of the power soft-start device 1〇. The curve diagram, as can be seen from the figure, there is an inrush current at the beginning of the input current 300, the output current 3〇ι is later than the input current 300, and the input current 3〇1 is gradually increased, and finally reaches a steady state. Please also refer to FIG. 6 , which is a schematic diagram of the input voltage 500 and the output voltage 501 of the power soft start device 1 ,. Since there is an inrush current at the beginning of the output current 300, the input voltage is 09514. 8494 Form No. A0101 Page 9 of 18 0993220748-0 1343181 [0021] On June 23, 099, the E replacement page starts to be higher. When the inrush current has passed, the output current is gradually reduced to a steady state. The output voltage 501 corresponds to the output current 3〇〇, and gradually rises to a stable state. The power soft-start device 10 has a second-order charging delay of the first electrolytic capacitor C11 and the second electrolytic capacitor C1 3 and is simultaneously used. The two switching elements, transistor T10 and MOS transistor Q10, cause the inrush current in the input current to not be directly output from the power supply output 200, but are consumed in two delay stages, thereby avoiding damage to the subsequent circuit by the inrush current. In addition, due to the switching characteristics of the MOS transistor Q10, the magnitude of the current increases as the charging of the second electrolytic capacitor C13 increases, so the (four)f current of the power supply output terminal 200 gradually increases the stable operation of the circuit. The regulation of the 10th resistance W10 'controls the delay time of the first electrolytic capacitor C11: the output of the control power supply output terminal 200. Wherein, the electro-crystals > 1 〇 and the MOS transistor Q1 0 of the present embodiment are only strict examples of the voltage-controlled switching elements; the open-air gas system controls the other ends thereof by the voltage at one end thereof 113⁄43⁄4 'stop', and the transistor includes NPN type and PNP type, MOS transistor package: including: N^ type and p-channel type, which can realize the switching function, but the input voltage requirements are different. Therefore, the transistor T10 and the MOS transistor Q1 in the present embodiment can be replaced by any one of them, and the related circuit is adjusted correspondingly. [Simple diagram of the figure] Figure 1 is a schematic diagram of the inrush current. Figure 2 is a schematic diagram of a common power soft-start circuit. 3 is a block diagram showing the principle of a power soft start device according to a preferred embodiment.
[0022] [0023] [0024] 095148494 表單編號A0101 第10頁/共18頁 0的322〇748-〇 1343181 099年06月23日梭正替换頁 [0025] 圖4為圖3所示的電源軟啟動裝置原理圖。 [0026] 圖5圖3所示的電源軟啟動裝置之電流曲線示意圖。 [0027] 圖6圖3所示的電源軟啟動裝置之電壓曲線示意圖。 【主要元件符號說明】[0024] [0024] [0024] 095148494 Form No. A0101 Page 10 / Total 18 Page 0 of 322 〇 748 - 〇 13431181 099 June 23 shuttle replacement page [0025] Figure 4 is the power supply shown in Figure 3. Soft start device schematic. 5 is a schematic diagram of a current curve of the power soft start device shown in FIG. [0027] FIG. 6 is a schematic diagram showing voltage curves of the power soft start device. [Main component symbol description]
[0028] 電源軟啟動裝置 ：10 [0029] 分壓電阻：R10 [0030] 電源輸入端：100 [0031] 可變電阻：W1 0 [0032] 分壓調節電路： 110 [0033] 第一濾波電容： C10 [0034] 第一延時電路： 130 [0035] 穩壓二極體：D10 [0036] 第一開關電路： 150 [0037] 第一電解電容： C11 [0038] 第二延時電路： 170 [0039] 輸入電阻：R11 [0040] 第二開關電路： 190 [0041] 上拉電阻：R12 [0042] 電源輸出端：200 [0043] 三極管：T10 表單編號A0101 095148494 第11頁/共18頁 0993220748-0 1343181 099年06月23日梭正替換頁 [0044] 輸入電流：300 [0045] 第二濾波電容：C12 [0046] 輸出電流：301 [0047] 下拉電阻：R1 3 [0048] 輸入電壓：50 0 [0049] 第二電解電容：C13 [0050] 輸出電壓：5 0 1 [0051] MOS電晶體：Q10[0028] Power soft start device: 10 [0029] Voltage divider resistor: R10 [0030] Power input: 100 [0031] Variable resistor: W1 0 [0032] Voltage divider adjustment circuit: 110 [0033] First filter capacitor : C10 [0034] First delay circuit: 130 [0035] Voltage regulator diode: D10 [0036] First switching circuit: 150 [0037] First electrolytic capacitor: C11 [0038] Second delay circuit: 170 [0039] Input resistance: R11 [0040] Second switching circuit: 190 [0041] Pull-up resistor: R12 [0042] Power output: 200 [0043] Transistor: T10 Form No. A0101 095148494 Page 11 of 18 0993220748-0 1343181 On June 23, 099, the shuttle is replacing the page [0044] Input current: 300 [0045] Second filter capacitor: C12 [0046] Output current: 301 [0047] Pull-down resistor: R1 3 [0048] Input voltage: 50 0 [0049] Second electrolytic capacitor: C13 [0050] Output voltage: 5 0 1 [0051] MOS transistor: Q10
095148494 表單編號A0101 第12頁/共18頁 0993220748-0095148494 Form No. A0101 Page 12 of 18 0993220748-0