TWI492471B - Multiple power supply device - Google Patents
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Description
本發明是有關於一種供電裝置，且特別是有關於一種多電源供電裝置。The present invention relates to a power supply device, and more particularly to a multiple power supply device.
可編程晶片因其可以編程調整的靈活性，於是在伺服器系統設計中被廣泛地應用，其中可編程晶片例如複雜可編程邏輯裝置(complex programmable logic device,CPLD)、場可編程閘陣列(field programmable gate array，FPGA)等。在傳統的設計中，可編程晶片的供電都是穩定且唯一的。但是隨著系統複雜程度的不斷增加，造成了可編程晶片可能有多個供電電源，且要在多個供電電源中進行選擇並切換一個作為供電電源。Programmable wafers are widely used in server system design because of their flexibility to be programmed and adjusted, such as programmable programmable logic devices (CPLDs), field programmable gate arrays (fields). Programmable gate array, FPGA), etc. In traditional designs, the power to the programmable chip is stable and unique. However, as the complexity of the system increases, the programmable chip may have multiple power supplies, and it is necessary to select among multiple power supplies and switch one as the power supply.
本發明提供一種多電源供電裝置，可自動選擇多個電源供應單元所輸出的一個工作電壓。The invention provides a multi-power supply device capable of automatically selecting an operating voltage output by a plurality of power supply units.
本發明提出一種多電源供電裝置，包括用電單元、多個電源供應單元及多個開關單元。用電單元具有電源端及多個偵測端。這些偵測端分別接收多個電源就緒信號，用電單元依據這些電源就緒信號輸出多個電源控制信號。這些電源供應單元用以分別輸出多個工作電壓，並且這些電源供應單元於輸出這些工作電壓時對應地輸出這些電源就緒信號。這些開關單元耦接用電單元，以及分別耦接這些電源供應單元。當用電單元處於工作狀態且這些電源就緒信號其中之一為致能時，用電單元致能對應的電源控制信號，這些開關單元依據致能的電源控制信號傳送對應的工作電壓至用電單元。當用電單元處於工作狀態且部分的這些電源就緒信號為致能時，用電單元致能上述致能的電源就緒信號所對應的電源控制信號的其中之一，這些開關單元依據致能的電源控制信號傳送對應的工作電壓至用電單元。The invention provides a multi-power supply device, comprising an electric unit, a plurality of power supply units and a plurality of switch units. The power unit has a power terminal and a plurality of detection terminals. The detection terminals respectively receive a plurality of power-good signals, and the power unit outputs a plurality of power control signals according to the power-good signals. The power supply units are configured to respectively output a plurality of operating voltages, and the power supply units respectively output the power supply ready signals when the operating voltages are output. The switch units are coupled to the power units and respectively coupled to the power supply units. When the power unit is in operation and one of the power-good signals is enabled, the power unit enables a corresponding power control signal, and the switch unit transmits the corresponding working voltage to the power unit according to the enabled power control signal. . When the power unit is in operation and part of the power-good signals are enabled, the power unit enables one of the power control signals corresponding to the enabled power-good signals, and the switch units are based on the enabled power source. The control signal transmits the corresponding operating voltage to the power unit.
在本發明之一實施例中，當用電單元未啟動且這些電源供應單元其中之一輸出工作電壓時，接收到工作電壓的開關單元輸出啟動電壓至用電單元。當用電單元未啟動且部分的這些電源供應單元輸出這些工作電壓時，接收到這些工作電壓的開關單元的其中之一輸出啟動電壓至用電單元。In an embodiment of the invention, when the power unit is not activated and one of the power supply units outputs an operating voltage, the switching unit that receives the operating voltage outputs a starting voltage to the power unit. When the power unit is not activated and part of the power supply units outputs the operating voltages, one of the switching units that receive the operating voltages outputs a starting voltage to the power unit.
在本發明之一實施例中，上述之開關單元包括開關及二極體。開關的第一端耦接對應的電源供應單元，開關的第二端耦接用電單元的電源端，開關的控制端接收對應的電源控制信號。二極體順向耦接於開關的第一端與第二端之間。當用電單元未啟動且這些電源供應單元其中之一輸出工作電壓時，這些開關單元中對應的二極體會順向導通，並依據工作電壓輸出一啟動電壓並傳送至用電單元的電源端，以使用電單元啟動進入工作狀態。當用電單元未啟動且部分的電源供應單元輸出這些工作電壓時，這些開關單元中的這些二極體中先接收到工作電壓者會順向導通，並依據所接收的工作電壓輸出該啟動電壓並傳送至用電單元的電源端，以使用電單元啟動進入工作狀態。當用電單元處於工作狀態且這些電源就緒信號其中之一為致能時，則致能對應的電源控制信號，以導通這些開關單元中對應的開關，並且透過導通的開關將工作電壓提供至用電單元的電源端。當用電單元處於工作狀態且部分的電源就緒信號為致能時，則對應地致能這些電源控制信號的其中之一，以導通這些開關單元中對應的開關，並且透過導通的開關將工作電壓提供至用電單元的電源端。In an embodiment of the invention, the above switching unit comprises a switch and a diode. The first end of the switch is coupled to the corresponding power supply unit, and the second end of the switch is coupled to the power end of the power unit, and the control end of the switch receives the corresponding power control signal. The diode is coupled in the forward direction between the first end and the second end of the switch. When the power unit is not activated and one of the power supply units outputs the working voltage, the corresponding diodes of the switch units are forwarded, and a starting voltage is output according to the operating voltage and transmitted to the power end of the power unit. Start to enter the working state by using the electric unit. When the power unit is not activated and part of the power supply unit outputs the operating voltages, the first of the two of the switching units receives the operating voltage, and the output voltage is output according to the received operating voltage. And transmitted to the power end of the power unit to start using the electric unit to enter the working state. When the power unit is in operation and one of the power-good signals is enabled, the corresponding power control signal is enabled to turn on the corresponding switch of the switch units, and the operating voltage is supplied through the turned-on switch. The power terminal of the electrical unit. When the power unit is in operation and part of the power-good signal is enabled, one of the power control signals is correspondingly enabled to turn on the corresponding one of the switch units, and the operating voltage is turned on by the turned-on switch Provide the power supply to the power unit.
在本發明之一實施例中，當用電單元未啟動時，這些電源就緒信號全部禁能，這些開關全部斷開。In one embodiment of the invention, when the power unit is not activated, the power ready signals are all disabled and all of the switches are open.
在本發明之一實施例中，當這些二極體其中之一順向導通時，其他的這些二極體全部截止。In one embodiment of the invention, when one of the diodes is in turn, all of the other diodes are turned off.
在本發明之一實施例中，上述之啟動電壓小於工作電壓。In an embodiment of the invention, the startup voltage is less than the operating voltage.
在本發明之一實施例中，上述之這些開關分別為一PMOS電晶體。In an embodiment of the invention, the switches are each a PMOS transistor.
在本發明之一實施例中，上述之這些電源供應單元分別為多個電源供應器。In an embodiment of the invention, the power supply units are each a plurality of power supplies.
在本發明之一實施例中，上述之這些電源供應單元分別為多個電源轉換器。In an embodiment of the invention, the power supply units are each a plurality of power converters.
在本發明之一實施例中，上述之用電單元為可編程晶片，並且上述之用電單元為複雜可編程邏輯裝置或場可編程閘陣列。In an embodiment of the invention, the power unit is a programmable chip, and the power unit is a complex programmable logic device or a field programmable gate array.
基於上述，本發明的多電源供電裝置，用電單元會依據電源就緒信號，自動選擇其中一個電源供應單元所輸出的工作電壓。在用電單元啟動之前，開關單元的其中之一會依據這些電源供應單元所輸出的一個工作電壓產生啟動電壓並傳送至用電單元。Based on the above, in the multi-power supply device of the present invention, the power unit automatically selects the operating voltage output by one of the power supply units according to the power supply ready signal. Before the power unit is started, one of the switching units generates a starting voltage according to an operating voltage output by the power supply unit and transmits it to the power unit.
為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the present invention will be more apparent from the following description.
在現在，由於系統複雜程度的不斷增加，造成了一顆可編程晶片可能被多個主機板所共用，以致於可編程晶片可能要在多個電壓中進行選擇並切換工作電壓為其中一個電壓。在一個多主機板的系統中，在帶有可編程晶片的擴充卡同時被這些主機板使用時，由於這些主機板可能開啟其中一個或多個，並且開啟的主機板並非固定的，因此在應用可編程晶片的電路的設計需求為：在任何一塊主機板工作時，可編程晶片可以此主機板的電壓為工作電壓；在多個主機板同時工作時，可編程晶片以對應其中一個工作的主機板的電壓為工作電壓。Nowadays, due to the increasing complexity of the system, a programmable chip may be shared by multiple motherboards, so that the programmable chip may have to select among multiple voltages and switch the operating voltage to one of the voltages. In a multi-board system, when the expansion cards with programmable chips are used by these motherboards at the same time, since these motherboards may be turned on one or more, and the turned-on motherboard is not fixed, the application is applied. The design requirements of the programmable chip circuit are: when working on any motherboard, the programmable chip can use the voltage of the motherboard as the working voltage; when multiple motherboards work simultaneously, the programmable chip corresponds to one of the working hosts. The voltage of the board is the operating voltage.
圖1為依據本發明一實施例的多電源供電裝置的系統示意圖。請參照圖1，多電源供電裝置100包括用電單元110、多個電源供應單元(如120_1、120_2、…等)及多個開關單元(如130_1、130_2、…等)。其中，用電單元110可以為可編程晶片，並且可以為複雜可編程邏輯裝置(CPLD)或場可編程閘陣列(FPGA)。電源供應單元120_1、120_2、…等輸出電壓(如V1、V2、…等)，並且於輸出電壓時輸出電源就緒信號(如PGD1、PGD2、…等)，其中電壓V1、V2、…等的電壓會大致相同。1 is a schematic diagram of a system of a multi-power supply device according to an embodiment of the invention. Referring to FIG. 1, the multi-power supply device 100 includes an electric power unit 110, a plurality of power supply units (such as 120_1, 120_2, ..., etc.) and a plurality of switch units (such as 130_1, 130_2, ..., etc.). The power unit 110 can be a programmable chip and can be a Complex Programmable Logic Device (CPLD) or a Field Programmable Gate Array (FPGA). The power supply units 120_1, 120_2, ..., etc. output voltages (such as V1, V2, ..., etc.), and output power supply ready signals (such as PGD1, PGD2, ..., etc.) at the output voltage, wherein the voltages of the voltages V1, V2, ..., etc. Will be roughly the same.
用電單元110具有電源端PWD、多個偵測端(如PD1、PD2、…等)及多個輸出端(如O1、O2、…等)。電源端PWD用以接收工作電壓VCC，以使用電單元110工作。偵測端PD1、PD2、…等分別接收電源就緒信號PGD1、PGD2、…等，而用電單元110依據電源就緒信號PGD1、PGD2、…等分別於輸出端如O1、O2、…等輸出多個電源控制信號(如PCL1、PCL2、…等)。開關單元如130_1、130_2、…等耦接用電單元110，並且分別耦接電源供應單元120_1、120_2、…等。The power unit 110 has a power terminal PWD, a plurality of detecting terminals (such as PD1, PD2, ..., etc.) and a plurality of output terminals (such as O1, O2, ..., etc.). The power terminal PWD is configured to receive the operating voltage VCC to operate using the electrical unit 110. The detecting terminals PD1, PD2, ..., etc. receive the power-good signals PGD1, PGD2, ..., etc., respectively, and the power-using unit 110 outputs multiples according to the power-good signals PGD1, PGD2, ..., etc. at the output terminals such as O1, O2, ..., etc. Power control signals (such as PCL1, PCL2, ..., etc.). The switch units, such as 130_1, 130_2, . . . , etc., are coupled to the power unit 110 and are respectively coupled to the power supply units 120_1, 120_2, .
當用電單元110處於工作狀態且這些電源就緒信號PGD1、PGD2、…等其中之一為致能時，用電單元110致能對應的電源控制信號(如PCL1、PCL2、…等)，開關單元130_1、130_2、…等則依據致能的電源控制信號(如PCL1、PCL2、…等)傳送對應的電壓(如V1、V2、…等)至用電單元110，以作為用電單元110的工作電壓VCC，其中工作電壓VCC約相等於電壓V1或V2。當用電單元110處於工作狀態且部分的電源就緒信號PGD1、PGD2、…等為致能時，用電單元110致能上述致能的電源就緒信號(如PGD1、PGD2、…等)所對應的電源控制信號(如PCL1、PCL2、…等)的其中之一，開關單元130_1、130_2、…等則依據致能的電源控制信號(如PCL1、PCL2、…等)傳送對應的電壓(如V1、V2、…等)至用電單元110，以作為用電單元110的工作電壓VCC。When the power unit 110 is in an active state and one of the power-good signals PGD1, PGD2, ..., etc. is enabled, the power unit 110 enables a corresponding power control signal (such as PCL1, PCL2, ..., etc.), the switch unit 130_1, 130_2, ..., etc. transmit corresponding voltages (such as V1, V2, ..., etc.) to the power consumption unit 110 according to the enabled power control signals (such as PCL1, PCL2, ..., etc.) to work as the power consumption unit 110. The voltage VCC, wherein the operating voltage VCC is approximately equal to the voltage V1 or V2. When the power unit 110 is in operation and part of the power-good signals PGD1, PGD2, ..., etc. are enabled, the power unit 110 enables the power-good signals (such as PGD1, PGD2, ..., etc.) that are enabled. One of the power control signals (such as PCL1, PCL2, ..., etc.), the switching units 130_1, 130_2, ..., etc. transmit corresponding voltages according to the enabled power control signals (such as PCL1, PCL2, ..., etc.) (such as V1). V2, ..., etc.) to the power unit 110 as the operating voltage VCC of the power unit 110.
舉例來說，當用電單元110處於工作狀態且電源供應單元120_1輸出電壓V1時，則電源就緒信號PGD1會致能。此時，用電單元110會致能電源控制信號PCL1，而開關單元130_1會依據致能的電源控制信號PCL1將電壓V1傳送至用電單元110的電源端PWD，以作為用電單元110的工作電壓VCC。當用電單元110處於工作狀態且電源供應單元120_1及120_2分別輸出電壓V1及V2時，則電源就緒信號PGD1及PGD2會致能。此時，用電單元110會致能電源控制信號PCL1及PCL2的其中之一，致使開關單元130_1及130_2的其中之一會依據致能的電源控制信號(PCL1或PCL2)將電壓(V1或V2)傳送至用電單元110的電源端PWD，以作為用電單元110的工作電壓VCC。For example, when the power unit 110 is in an active state and the power supply unit 120_1 outputs the voltage V1, the power ready signal PGD1 is enabled. At this time, the power unit 110 enables the power control signal PCL1, and the switch unit 130_1 transmits the voltage V1 to the power terminal PWD of the power unit 110 according to the enabled power control signal PCL1 to work as the power unit 110. Voltage VCC. When the power unit 110 is in operation and the power supply units 120_1 and 120_2 respectively output the voltages V1 and V2, the power ready signals PGD1 and PGD2 are enabled. At this time, the power unit 110 enables one of the power control signals PCL1 and PCL2, such that one of the switch units 130_1 and 130_2 will apply a voltage (V1 or V2) according to the enabled power control signal (PCL1 or PCL2). ) is transmitted to the power terminal PWD of the power unit 110 as the operating voltage VCC of the power unit 110.
此外，當用電單元110未啟動且電源供應單元120_1、120_2、…等其中之一輸出電壓(如V1、V2、…等)時，接收到電壓(如V1、V2、…等)的開關單元(如130_1、130_2、…等)會依據所接收到的電壓(如V1、V2、…等)輸出啟動電壓VST並傳送至用電單元110，以啟動用電單元110。當用電單元110未啟動且部分的電源供應單元120_1、120_2、…等輸出電壓(如V1、V2、…等)時，接收到電壓(如V1、V2、…等)的開關單元(如130_1、130_2、…等)的其中之一會依據所接收到的電壓(如V1、V2、…等)輸出啟動電壓VST並傳送至用電單元110，以啟動用電單元110。其中，啟動電壓VST小於工作電壓VCC。Further, when the electric power unit 110 is not activated and one of the power supply units 120_1, 120_2, . . . , etc. outputs a voltage (eg, V1, V2, . . . , etc.), a switching unit that receives a voltage (eg, V1, V2, . . . , etc.) (such as 130_1, 130_2, ..., etc.) will output the startup voltage VST according to the received voltage (such as V1, V2, ..., etc.) and transmit it to the power consumption unit 110 to activate the power consumption unit 110. When the power unit 110 is not activated and a part of the power supply units 120_1, 120_2, . . . output voltage (such as V1, V2, ..., etc.), a switching unit (such as 130_1) that receives a voltage (such as V1, V2, ..., etc.) One of the 130_2, ..., etc. outputs the start voltage VST according to the received voltage (such as V1, V2, ..., etc.) and transmits it to the power unit 110 to activate the power unit 110. The startup voltage VST is smaller than the operating voltage VCC.
舉例來說，當用電單元110未啟動且電源供應單元120_1輸出待機電壓V1時，則開關單元130_1會依據機電壓V1輸出啟動電壓VST並傳送至用電單元110的電源端PWD，以啟動用電單元110。當用電單元110未啟動且電源供應單元120_1及120_2分別輸出電壓V1及V2時，則開關單元130_1及130_2的其中之一會依據電壓(V1或V2)輸出啟動電壓VST並傳送至用電單元110的電源端PWD，以啟動用電單元110，並且另一開關單元則不動作。For example, when the power unit 110 is not activated and the power supply unit 120_1 outputs the standby voltage V1, the switch unit 130_1 outputs the startup voltage VST according to the machine voltage V1 and transmits it to the power terminal PWD of the power unit 110 for startup. Electrical unit 110. When the power unit 110 is not activated and the power supply units 120_1 and 120_2 respectively output the voltages V1 and V2, one of the switch units 130_1 and 130_2 outputs the start voltage VST according to the voltage (V1 or V2) and transmits it to the power unit. The power terminal PWD of 110 activates the power unit 110, and the other switch unit does not operate.
圖2為依據本發明一實施例的多電源供電裝置的電路示意圖。請參照圖1及圖2，在本實施例中，電源供應單元120_1、120_2、…等以電源供應器120_1、120_2、…等為例，但在其他實施例中，電源供應單元可以為電源轉換器。並且，開關單元130_1包括電晶體M1及二極體D1，開關單元130_2包括電晶體M2及二極體D2，其餘開關單元的結構相同於開關單元130_1及130_2，在此則不再贅述。而電晶體M1、M2、…等在此以PMOS電晶體為例，並且每一電晶體可視為一開關。2 is a circuit diagram of a multi-supply power supply device according to an embodiment of the invention. Referring to FIG. 1 and FIG. 2, in the embodiment, the power supply units 120_1, 120_2, . . . are exemplified by the power supplies 120_1, 120_2, . . . , etc., but in other embodiments, the power supply unit may be a power conversion. Device. The switch unit 130_1 includes a transistor M1 and a diode D1. The switch unit 130_2 includes a transistor M2 and a diode D2. The remaining switch units have the same structure as the switch units 130_1 and 130_2, and are not described herein again. The transistors M1, M2, ..., etc. are exemplified herein as PMOS transistors, and each transistor can be regarded as a switch.
電晶體M1的源極(即第一端)耦接電源供應器120_1以接收電壓V1，電晶體M1的汲極(即第二端)耦接用電單元110的電源端PWD以輸出工作電壓VCC至用電單元110的電源端PWD，電晶體M1的閘極(即控制端)接收電源控制信號PCL1。二極體D1順向耦接於電晶體M1的汲極與源極之間，亦即二極體D1的陽極耦接電晶體M1的源極，二極體D1的陰極耦接電晶體M1的汲極。The source (ie, the first end) of the transistor M1 is coupled to the power supply 120_1 to receive the voltage V1, and the drain (ie, the second end) of the transistor M1 is coupled to the power terminal PWD of the power unit 110 to output the operating voltage VCC. To the power terminal PWD of the power unit 110, the gate (ie, the control terminal) of the transistor M1 receives the power control signal PCL1. The diode D1 is coupled between the drain and the source of the transistor M1, that is, the anode of the diode D1 is coupled to the source of the transistor M1, and the cathode of the diode D1 is coupled to the transistor M1. Bungee jumping.
電晶體M2的源極耦接電源供應器120_2以接收電壓V2，電晶體M2的汲極耦接用電單元110的電源端PWD以輸出工作電壓VCC至用電單元110的電源端PWD，電晶體M2的閘極接收電源控制信號PCL2。二極體D2順向耦接於電晶體M2的汲極與源極之間，亦即二極體D2的陽極耦接電晶體M2的源極，二極體D2的陰極耦接電晶體M2的汲極。其餘則以此類推，在此則不再贅述。The source of the transistor M2 is coupled to the power supply 120_2 to receive the voltage V2, and the drain of the transistor M2 is coupled to the power terminal PWD of the power unit 110 to output the operating voltage VCC to the power terminal PWD of the power unit 110, the transistor. The gate of M2 receives the power control signal PCL2. The diode D2 is coupled between the drain and the source of the transistor M2, that is, the anode of the diode D2 is coupled to the source of the transistor M2, and the cathode of the diode D2 is coupled to the transistor M2. Bungee jumping. The rest are deduced by analogy and will not be repeated here.
當電源供應器120_1、120_2、…等皆未開啟時，則代表所有的主機板皆未開啟。此時，電源供應器120_1、120_2、…等無法提供電壓V1、V2、…等，並且電源就緒信號PGD1、PGD2、…等會呈現禁能(例如為低電壓準位)，以致於電晶體M1、M2、…等會呈現未導通(即等同於開關斷開)及二極體D1、D2、…等會截止。由於電壓V1、V2、…等無法傳送至用電單元110的電源端PWD以作為工作電壓VCC，以及二極體D1、D2、…等無法依據電壓V1、V2、…等產生啟動電壓VST，因此用電單元110處於未啟動狀態。When the power supplies 120_1, 120_2, ..., etc. are not turned on, it means that all the motherboards are not turned on. At this time, the power supplies 120_1, 120_2, ..., etc. cannot supply the voltages V1, V2, ..., etc., and the power-good signals PGD1, PGD2, ..., etc. are disabled (for example, at a low voltage level), so that the transistor M1 , M2, ..., etc. will appear non-conducting (that is, equivalent to the switch is off) and the diodes D1, D2, ... will be cut off. Since the voltages V1, V2, ..., etc. cannot be transmitted to the power supply terminal PWD of the electric power unit 110 as the operating voltage VCC, and the diodes D1, D2, ..., etc. cannot generate the starting voltage VST according to the voltages V1, V2, ..., etc., The power unit 110 is in an unactivated state.
當電源供應器120_1、120_2、…等其中之一開啟時，則表示對應的主機板被開啟。假設開啟的電源供應器為電則表示對應的主機板被開啟。假設開啟的電源供應器為電源供應器120_1，則電源供應器120_1會提供電壓V1，並且電源就緒信號PGD1會呈現致能(例如為高電壓準位)。此時，二極體D1會接收到順向偏壓而順向導通，並且將電壓V1會降低一個臨界電壓後傳送至用電單元110的電源端PWD作為啟動電壓VST，亦即二極體D1會依據電壓V1輸出啟動電壓VST，其中啟動電壓VST會小於電壓V1。When one of the power supplies 120_1, 120_2, ..., etc. is turned on, it indicates that the corresponding motherboard is turned on. Assuming that the powered power supply is powered, the corresponding motherboard is turned on. Assuming that the powered power supply is the power supply 120_1, the power supply 120_1 will provide the voltage V1, and the power ready signal PGD1 will be enabled (eg, at a high voltage level). At this time, the diode D1 will receive the forward bias and pass the conduction, and the voltage V1 will be lowered by a threshold voltage and then transmitted to the power terminal PWD of the power unit 110 as the starting voltage VST, that is, the diode D1. The startup voltage VST is output according to the voltage V1, wherein the startup voltage VST is smaller than the voltage V1.
在用電單元110的電源端PWD在接收到啟動電壓VST或工作電壓VCC之前，用電單元110會呈現未啟動狀態，因此輸出端O1、O2、…等會呈現浮接狀態。由於電晶體M1、M2、…等的閘極的沒有接收任何電壓，以致於電晶體M1、M2、…等會呈現不導通(等同於開關斷開)。Before the power supply terminal PWD of the power consumption unit 110 receives the startup voltage VST or the operating voltage VCC, the power unit 110 will assume an unactivated state, and thus the output terminals O1, O2, ..., etc. will assume a floating state. Since the gates of the transistors M1, M2, ..., etc. do not receive any voltage, the transistors M1, M2, ..., etc. may exhibit non-conduction (equivalent to the switch being turned off).
在用電單元110的電源端PWD在接收到啟動電壓VST之後，用電單元110會處於工作狀態。由於電源就緒信號PGD1呈現致能，因此用電單元110會致能電源控制信號PCL1，亦即將電源控制信號PCL1由高電壓準位切換為低電壓準位。此時，電晶體M1的閘極的電壓會遠小於電晶體M1的源極的電壓，以致於電晶體M1會導通，並且將電壓V1傳送至用電單元110的電源端PWD作為工作電壓VCC，其中工作電壓VCC會約等於電壓V1。並且，由於工作電壓VCC會約等於電壓V1，因此二極體D1會因為順向偏壓不足而截止。After receiving the startup voltage VST at the power terminal PWD of the power unit 110, the power unit 110 is in an active state. Since the power-good signal PGD1 is enabled, the power unit 110 enables the power control signal PCL1, that is, the power control signal PCL1 is switched from the high voltage level to the low voltage level. At this time, the voltage of the gate of the transistor M1 is much smaller than the voltage of the source of the transistor M1, so that the transistor M1 is turned on, and the voltage V1 is transmitted to the power terminal PWD of the power unit 110 as the operating voltage VCC, The operating voltage VCC will be approximately equal to the voltage V1. Also, since the operating voltage VCC will be approximately equal to the voltage V1, the diode D1 will be turned off due to insufficient forward bias.
另一方面，當電源供應器120_1、120_2、…等其中二個以上開啟時，則表示對應的主機板被開啟。假設開啟的電源供應器為電源供應器120_1及120_2，則電源供應器120_1會提供電壓V1，電源供應器120_2會提供待機電壓V2，並且電源就緒信號PGD1及PGD2會呈現致能。此時，二極體D1及D2會接收到順向偏壓，並且二極體D1及D2中先接收到電壓(V1或V2)者會先導通，並且依據電壓(V1或V2)輸出啟動電壓VST至用電單元110的電源端PWD，而另一顆二極體則會即截止。由於二極體D1及D2為順向導通元件，藉此可避免電源供應器120_1及120_2之間相互連通，以避免出現電源反灌或不平衡的狀況。假設導通的二極體為二極體D2，因此會二極體D2依據電壓V2產生啟動電壓VST並傳送至用電單元110的電源端PWD。On the other hand, when two or more of the power supplies 120_1, 120_2, ..., etc. are turned on, it means that the corresponding motherboard is turned on. Assuming that the powered power supplies are the power supplies 120_1 and 120_2, the power supply 120_1 will provide the voltage V1, the power supply 120_2 will provide the standby voltage V2, and the power ready signals PGD1 and PGD2 will be enabled. At this time, the diodes D1 and D2 will receive the forward bias, and the first one of the diodes D1 and D2 receives the voltage (V1 or V2) will be turned on first, and the starting voltage is output according to the voltage (V1 or V2). The VST is connected to the power supply terminal PWD of the power unit 110, and the other diode is turned off. Since the diodes D1 and D2 are forward-conducting components, the power supplies 120_1 and 120_2 can be prevented from communicating with each other to avoid a situation in which the power supply is back-filled or unbalanced. Assuming that the turned-on diode is the diode D2, the diode D2 generates the startup voltage VST according to the voltage V2 and transmits it to the power supply terminal PWD of the power unit 110.
在用電單元110的電源端PWD在接收到啟動電壓VST及工作電壓VCC之前，用電單元110會處於未啟動狀態，因此輸出端O1、O2、…等會呈現浮接狀態。由於電晶體M1、M2、…等的閘極的沒有接收任何電壓，以致於電晶體M1、M2、…等會呈現不導通。在用電單元110的電源端PWD在接收到啟動電壓VST之後，用電單元110會處於工作狀態。由於電源就緒信號PGD1及PGD2呈現致能，因此用電單元110會致能電源控制信號PCL1及PCL2其中之一，其中選擇的方式可以為依照順序或隨機，此可依據本領域通常知識者自行設計，且本發明不以此為限。在此假設致能電源控制信號PCL2，則電晶體M2會導通，並且將電壓V2傳送至用電單元110的電源端PWD作為工作電壓VCC，其中工作電壓VCC會約等於電壓V2。並且，由於工作電壓VCC會約等於電壓V2，因此二極體D1及D2會因為順向偏壓不足而截止。Before the power supply terminal PWD of the power unit 110 receives the startup voltage VST and the operating voltage VCC, the power unit 110 will be in an unactivated state, so the output terminals O1, O2, ..., etc. will assume a floating state. Since the gates of the transistors M1, M2, ..., etc. do not receive any voltage, the transistors M1, M2, ..., etc. may exhibit non-conduction. After receiving the startup voltage VST at the power terminal PWD of the power unit 110, the power unit 110 is in an active state. Since the power-good signals PGD1 and PGD2 are enabled, the power-on unit 110 enables one of the power control signals PCL1 and PCL2, which may be selected in order or randomly, which may be designed by those skilled in the art. And the invention is not limited thereto. It is assumed here that the power supply control signal PCL2 is enabled, the transistor M2 is turned on, and the voltage V2 is transmitted to the power supply terminal PWD of the power unit 110 as the operating voltage VCC, wherein the operating voltage VCC will be approximately equal to the voltage V2. Moreover, since the operating voltage VCC will be approximately equal to the voltage V2, the diodes D1 and D2 will be turned off due to insufficient forward bias.
綜上所述，本發明實施例的多電源供電裝置，在用電單元工作之前，先接收到電壓的二極體會導通，並透過導通的二極體輸出啟動電壓至用電單元以啟動用電單元。在用電單元處於工作狀態時，用電單元可依據電源供應器的電源就緒信號，自動選擇所接收的電壓作為工作電壓。並且，由於二極體會順向導通元件，藉此可避免電源供應器之間相互連通，進而避免出現電源反灌或不平衡的狀況。In summary, in the multi-power supply device of the embodiment of the present invention, the diode that receives the voltage is turned on before the power unit is operated, and the startup voltage is output to the power unit through the turned-on diode to start the power. unit. When the power unit is in the working state, the power unit can automatically select the received voltage as the working voltage according to the power supply ready signal of the power supply. Moreover, since the diodes are connected to the components, the power supply can be prevented from communicating with each other, thereby preventing the power supply from being reversed or unbalanced.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
100．．．多電源供電裝置100. . . Multiple power supply unit
110．．．用電單元110. . . Power unit
130_1、130_2．．．開關單元130_1, 130_2. . . Switch unit
D1、D2．．．二極體D1, D2. . . Dipole
M1、M2．．．電晶體M1, M2. . . Transistor
O1、O2．．．輸出端O1, O2. . . Output
PCL1、PCL2．．．電源控制信號PCL1, PCL2. . . Power control signal
PD1、PD2．．．偵測端PD1, PD2. . . Detection side
PGD1、PGD2．．．電源就緒信號PGD1, PGD2. . . Power ready signal
PWD．．．電源端PWD. . . Power terminal
VCC．．．工作電壓VCC. . . Operating Voltage
V1、V2．．．電壓V1, V2. . . Voltage
VST．．．啟動電壓VST. . . Starting voltage
圖1為依據本發明一實施例的多電源供電裝置耦接多個電源供應器的系統示意圖。FIG. 1 is a schematic diagram of a system for coupling multiple power supply devices to multiple power supply devices according to an embodiment of the invention.
圖2為依據本發明一實施例的多電源供電裝置的電路示意圖。2 is a circuit diagram of a multi-supply power supply device according to an embodiment of the invention.
100．．．多電源供電裝置100. . . Multiple power supply unit
110．．．用電單元110. . . Power unit
120_1、120_2．．．電源供應單元120_1, 120_2. . . Power supply unit
130_1、130_2．．．開關單元130_1, 130_2. . . Switch unit
O1、O2．．．輸出端O1, O2. . . Output
PCL1、PCL2．．．電源控制信號PCL1, PCL2. . . Power control signal
PD1、PD2．．．偵測端PD1, PD2. . . Detection side
PGD1、PGD2．．．電源就緒信號PGD1, PGD2. . . Power ready signal
PWD．．．電源端PWD. . . Power terminal
VCC．．．工作電壓VCC. . . Operating Voltage
V1、V2．．．電壓V1, V2. . . Voltage
VST．．．啟動電壓VST. . . Starting voltage
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| CN1728499A (en) * | 2004-07-31 | 2006-02-01 | 华为技术有限公司 | Method and device of realizing hot plug for power distribution singleboard |
| TW200937855A (en) * | 2007-12-20 | 2009-09-01 | O2Micro Inc | Driving circuit and driving method for MOS transistor and power management system thereof |
| CN101874272A (en) * | 2008-01-30 | 2010-10-27 | 艾格瑞系统有限公司 | Method and apparatus for improving yield in electronic circuits |
| TW200947194A (en) * | 2008-05-05 | 2009-11-16 | Asustek Comp Inc | Power management apparatus and system using the same |
| CN101752900A (en) * | 2008-12-17 | 2010-06-23 | 索尼爱立信移动通信日本株式会社 | Power supply system and electronic instrument |
| CN101764425A (en) * | 2009-12-30 | 2010-06-30 | 福建星网锐捷网络有限公司 | Single plate power backup circuit and single plate power system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11942857B2 (en) | 2021-12-02 | 2024-03-26 | Industrial Technology Research Institute | Power supply |
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| Publication number | Publication date |
|---|---|
| TW201228175A (en) | 2012-07-01 |
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