TWI687015B - Power supply with surge current suppression - Google Patents

Power supply with surge current suppression Download PDF

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TWI687015B
TWI687015B TW107119196A TW107119196A TWI687015B TW I687015 B TWI687015 B TW I687015B TW 107119196 A TW107119196 A TW 107119196A TW 107119196 A TW107119196 A TW 107119196A TW I687015 B TWI687015 B TW I687015B
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power supply
power
factor correction
correction unit
switch
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TW107119196A
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TW202005218A (en
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方毅雄
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偉訓科技股份有限公司
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Abstract

本發明提供一種具湧浪電流抑制的電源供應器，該電源供應器基於一啟閉訊號的電位進入一啟動模式或一關閉模式。該電源供應器包含一功因校正單元及一連接該功因校正單元的啟動控制單元，該功因校正單元具有一穩壓電容，一串聯該穩壓電容的熱敏電阻及一並聯該熱敏電阻的第一開關，該啟動控制單元具有一於該啟動模式時啟動該功因校正單元並連動導通該第一開關以短路該熱敏電阻的開機模式，及一於該關閉模式時關閉該功因校正單元並連動截止該第一開關令該熱敏電阻得抑制流入該功因校正單元的湧浪電流的關機模式。The invention provides a power supply with surge current suppression. The power supply enters a startup mode or a shutdown mode based on the potential of an on-off signal. The power supply includes a power factor correction unit and a startup control unit connected to the power factor correction unit. The power factor correction unit has a voltage stabilizing capacitor, a thermistor connected in series with the voltage stabilizing capacitor, and a parallel thermistor The first switch of the resistor, the startup control unit has a startup mode that activates the power factor correction unit during the startup mode and turns on the first switch to short-circuit the thermistor, and turns off the power during the shutdown mode Because the correction unit also turns off the first switch, the thermistor can suppress the shutdown mode of the inrush current flowing into the power correction unit.

Description

具湧浪電流抑制的電源供應器Power supply with surge current suppression

本發明涉及一種電源供應器，尤指一種具湧浪電流抑制的電源供應器。 The invention relates to a power supply, especially a power supply with surge current suppression.

電源供應器於接受交流電力源(如市電)準備啟動的初始，該電源供應器所有一功因校正單元內與一穩壓電容所串聯的元件(包含該穩壓電容)將承受非常大的湧浪電流(又稱突波電流或突入電流)。現，為避免前述湧浪電流對該電源供應器電路產生衝擊，使該電源供應器損壞，相關業者均對此提出了抑制方案，就如TW I290405、TW I474592、TW I494747、TW M268615、TW 200934029所揭。 When the power supply is ready to start after receiving an AC power source (such as a commercial power supply), all components (including the voltage-stabilizing capacitor) connected in series with a voltage-stabilizing capacitor in a power factor correction unit of the power supply will withstand a very large surge Inrush current (also known as surge current or inrush current). Now, in order to avoid the impact of the aforementioned surge current on the power supply circuit and damage the power supply, related companies have proposed suppression solutions, such as TW I290405, TW I474592, TW I494747, TW M268615, TW 200934029 Uncovered.

其中，就以TW I290405專利案來說，該專利案揭露一種突波電流控制電路，該專利案於主要迴路中以阻抗串接模式設置一第一控制單元和一第二控制單元，該第一控制單元和該第二控制單元均具有相互並聯之一限流電阻和一受控開關。該第一控制單元的該限流電阻用以防止於交流電源接通瞬間所產生之一突波電流，其受控開關則根據儲能電容之電壓而導通，以使電流跨過第一限流電阻，而第二控制單元的限流電阻則用以防止於交流電源之準位切換瞬間所產生之突波電流，其受控開關則根據交流電源而導通，以使電流跨過第二限流電阻。承此，TW I290405專利案雖然提出了抑制突波電流的技術方案，但該第一控制單元與該第二控制單元均是以額外的控制電路實施，如此實施將令該整體電路佈局及系統控制趨於複雜，並增加了電路的成本。 Among them, in the patent case of TW I290405, which discloses a surge current control circuit, the patent case provides a first control unit and a second control unit in an impedance series connection mode in the main circuit. The control unit and the second control unit both have a current limiting resistor and a controlled switch connected in parallel with each other. The current limiting resistor of the first control unit is used to prevent a surge current generated when the AC power is turned on, and its controlled switch is turned on according to the voltage of the energy storage capacitor, so that the current crosses the first current limit Resistance, and the current-limiting resistance of the second control unit is used to prevent the surge current generated at the moment of the level switching of the AC power supply, and its controlled switch is turned on according to the AC power supply to make the current cross the second current limiting resistance. In this connection, although the TW I290405 patent case proposes a technical solution for suppressing surge current, both the first control unit and the second control unit are implemented with additional control circuits. Such implementation will make the overall circuit layout and system control trend It is complicated and increases the cost of the circuit.

再者，TW 200934029專利案揭露一種突入電流抑制電路，該突入電流抑制電路連接於一整流電路及一濾波電路之間，並包含一限流電阻、一電容及一具三端子之主動元件，該主動元件係分別與該電容及該限流電阻並聯。電源啟動時，電流係先流過該限流電阻並同時對該電容充電，當該電容充電至可作動該主動元件的電壓值時，該主動元件隨即導通而使與其並聯之限流電阻短路，進而減低電源供應時該限流電阻所造成之電能消耗。承此，TW 200934029專利案雖同樣提出了抑制突波電流的技術方案，但TW 200934029所用元件諸多，將導致電路設計必須重新考量，且前述主動元件的驅動牽涉到與其連接各點的電壓，令前述主動元件的驅動電路不易實現。 Furthermore, the TW 200934029 patent case discloses an inrush current suppression circuit, which is connected between a rectifier circuit and a filter circuit, and includes a current limiting resistor, a capacitor, and a three-terminal active element, the The active components are connected in parallel with the capacitor and the current limiting resistor, respectively. When the power is turned on, the current first flows through the current-limiting resistor and charges the capacitor. When the capacitor is charged to a voltage value that can actuate the active element, the active element turns on immediately and short-circuits the current-limiting resistor in parallel with it. Furthermore, the power consumption caused by the current limiting resistor during power supply is reduced. As a result, although the TW 200934029 patent case also proposed a technical solution to suppress the surge current, the many components used in TW 200934029 will lead to the circuit design must be reconsidered, and the driving of the aforementioned active components involves the voltage of each point connected to it, so that The driving circuit of the aforementioned active element is not easy to realize.

本發明的主要目的，在於解決習用實施方案會衍生電路組成複雜或控制困難的問題。 The main purpose of the present invention is to solve the problem that the conventional implementation will lead to complicated circuit composition or difficult control.

為達上述目的，本發明提供一種具湧浪電流抑制的電源供應器，該電源供應器基於一負載發出的一啟閉訊號的電位進入一啟動模式或一關閉模式。該電源供應器包含一功因校正單元以及一與該功因校正單元連接的啟動控制單元，該功因校正單元具有一穩壓電容，一串聯該穩壓電容的熱敏電阻及一並聯該熱敏電阻的第一開關。該啟動控制單元具有一於該電源供應器進入該啟動模式時啟動該功因校正單元並連動導通該第一開關以短路該熱敏電阻的開機模式，及一於該電源供應器進入該關閉模式時關閉該功因校正單元並連動截止該第一開關令該熱敏電阻得抑制流入該功因校正單元的湧浪電流的關機模式。 To achieve the above object, the present invention provides a power supply with surge current suppression. The power supply enters a startup mode or a shutdown mode based on the potential of an on-off signal sent by a load. The power supply includes a power factor correction unit and a start-up control unit connected to the power factor correction unit. The power factor correction unit has a voltage stabilizing capacitor, a thermistor connected in series with the voltage stabilizing capacitor, and a parallel the heat The first switch of the varistor. The startup control unit has a startup mode that activates the power factor correction unit and turns on the first switch to short-circuit the thermistor when the power supply enters the startup mode, and one enters the shutdown mode when the power supply enters When the power factor correction unit is turned off and the first switch is turned off in conjunction, the thermistor can suppress the shutdown mode of the inrush current flowing into the power factor correction unit.

一實施例中，該第一開關具有一連接該穩壓電容的電力輸入端，一連接該啟動控制單元的控制端，以及一第一接地端，該熱敏電阻具有一連接該電力輸入端的第一端，以及一連接該第一接地端的第二端。 In an embodiment, the first switch has a power input terminal connected to the voltage stabilizing capacitor, a control terminal connected to the startup control unit, and a first ground terminal, and the thermistor has a first terminal connected to the power input terminal One end, and a second end connected to the first grounding end.

一實施例中，該啟動控制單元具有一與該第一接地端連接令該啟動控制單元與該功因校正單元形成共地的第二接地端以及一與該控制端連接的工作電壓輸入端，該啟動控制單元於該開機模式時，該工作電壓輸入端與該第二接地端之間形成一電壓差，該電壓差令該第一開關導通。 In one embodiment, the startup control unit has a second ground terminal connected to the first ground terminal so that the startup control unit and the power factor correction unit form a common ground and an operating voltage input terminal connected to the control terminal, When the startup control unit is in the startup mode, a voltage difference is formed between the operating voltage input terminal and the second ground terminal, and the voltage difference causes the first switch to be turned on.

一實施例中，該電源供應器包含一設置於該功因校正單元前級的整流輸入單元。 In one embodiment, the power supply includes a rectification input unit disposed at the front stage of the power factor correction unit.

一實施例中，該電源供應器包含一設置於該功因校正單元後級的電力轉換單元。 In one embodiment, the power supply includes a power conversion unit disposed behind the power factor correction unit.

一實施例中，該第一開關可為一雙載子接面電晶體、一場效應電晶體或一金氧半場效應電晶體。 In an embodiment, the first switch may be a double carrier junction transistor, a field effect transistor, or a metal oxide half field effect transistor.

透過本發明前述所揭，相較於習用具有以下優點：本發明令該啟動控制單元啟動該功因校正單元的同時，將連動導通該第一開關。另一方面，該啟動控制單元關閉該功因校正單元的同時，連動截止該第一開關，如此一來就可省去用以控制該第一開關的控制電路，不僅簡化系統控制的複雜度，更提升了系統控制的可靠度，且無須增加額外的驅動電路實施成本。 Through the foregoing disclosure of the present invention, it has the following advantages over conventional ones: The present invention enables the activation control unit to activate the power factor correction unit while simultaneously turning on the first switch. On the other hand, the start control unit shuts off the power factor correction unit and simultaneously shuts off the first switch, so that the control circuit for controlling the first switch can be omitted, which not only simplifies the complexity of system control, The reliability of the system control is further improved, and there is no need to increase the cost of implementing additional driving circuits.

100:電源供應器 100: power supply

10:功因校正單元 10: Power factor correction unit

11:啟動控制單元 11: Start the control unit

111:第二接地端 111: second ground

112:工作電壓輸入端 112: working voltage input

12:穩壓電容 12: Voltage stabilizing capacitor

13:熱敏電阻 13: Thermistor

131:第一端 131: the first end

132:第二端 132: Second end

14:第一開關 14: The first switch

141:電力輸入端 141: Power input

142:控制端 142: Control terminal

143:第一接地端 143: First ground terminal

15:整流輸入單元 15: Rectifier input unit

16:電力轉換單元 16: Power conversion unit

200:負載 200: load

300:交流電力源 300: AC power source

40、41:電流路徑 40, 41: current path

42:啟閉訊號 42: opening and closing signal

圖1，本發明一實施例的單元組成示意圖。 FIG. 1 is a schematic diagram of unit composition according to an embodiment of the invention.

圖2，本發明一實施例的電路示意圖。 FIG. 2 is a circuit schematic diagram of an embodiment of the invention.

圖3，本發明一實施例啟動模式的實施示意圖。 FIG. 3 is a schematic diagram of an implementation of a startup mode according to an embodiment of the invention.

圖4，本發明一實施例關閉模式的實施示意圖。 FIG. 4 is a schematic diagram of an implementation of a shutdown mode according to an embodiment of the invention.

本發明詳細說明及技術內容，現就配合圖式說明如下：請參閱圖1，本發明提供一種具湧浪電流抑制的電源供應器100，該電源供應器100主要被配置於個人電腦(PC)或工業用電腦(IPC)，該電源供應器100是基於ATX主機板規格實現。承此，該電源供應器100與一負載200連接，該負載200***作而擬啟動時，該負載200向該電源供應器100發出一啟閉訊號42為低電位，該電源供應器100根據該啟閉訊號42進入一啟動模式，準備向該負載200輸出工作所需的電力。另一方面，當該負載200受操作而將停止工作時，該負載200向該電源供應器100發出的該啟閉訊號42為高電位(或開路)，該電源供應器100則根據當時的該啟閉訊號42進入一關閉模式，停止向該負載200輸出工作所需的電力。再者，本文所指該啟閉訊號42即俗稱的PS_ON#，PS_ON#的定義是由英特爾公司所規範。前述該啟閉訊號42的電位變化僅為本文所提出的一實施例而已，非用以限定本案。 The detailed description and technical content of the present invention will now be explained in conjunction with the drawings as follows: Please refer to FIG. 1, the present invention provides a power supply 100 with surge current suppression. The power supply 100 is mainly configured in a personal computer (PC) Or an industrial computer (IPC), the power supply 100 is implemented based on ATX motherboard specifications. According to this, the power supply 100 is connected to a load 200. When the load 200 is operated and is about to start, the load 200 sends an on/off signal 42 to the power supply 100 to a low potential. The power supply 100 according to the The start-stop signal 42 enters a start-up mode, ready to output the power required for the work to the load 200. On the other hand, when the load 200 is operated and will stop working, the on-off signal 42 sent by the load 200 to the power supply 100 is at a high potential (or open circuit), and the power supply 100 is based on the current The opening and closing signal 42 enters a shutdown mode and stops outputting the power required for the work to the load 200. Furthermore, the start-stop signal 42 referred to in this article is commonly known as PS_ON#, and the definition of PS_ON# is standardized by Intel Corporation. The aforementioned potential change of the start-stop signal 42 is only an embodiment proposed herein, and is not intended to limit this case.

承上，請參閱圖2，該電源供應器100至少包含一功因校正單元10以及一連接該功因校正單元10的啟動控制單元11，該功因校正單元10即俗稱的PFC(Power Factor Correction)，該功因校正單元10可為交錯式功因校正電路、無橋式功因校正電路或其他具功因校正功能的電路實施。又，該功因校正單元10具有一穩壓電容12，一串聯該穩壓電容12的熱敏電阻13，以及一並聯該熱敏電阻13的第一開關14。其中，該第一開關14可為一雙載子接面電晶體(BJT)、一場效應電晶體(FET)或一金氧半場效應電晶體(MOSFET)。一實施例中，該第一開關14具有一連接該穩壓電容12的電力輸 入端141，一連接該啟動控制單元11的控制端142，以及一第一接地端143，該熱敏電阻13具有一連接該電力輸入端141的第一端131，以及一連接該第一接地端143的第二端132。再者，一實施例中，該第一開關14可以N型金氧半場效應電晶體(N-MOSFET)實施，該N型金氧半場效應電晶體具有較低的導通阻抗，而可避免該電源供應器100因其降低效率。另一方面，由於該第一開關14被該熱敏電阻13所箝位，故該第一開關14的耐壓無須太高。此外，該第一開關14與該熱敏電阻13的位置亦可根據電路設計進行適當的調整。另一方面，該啟動控制單元11連接該功因校正單元10，並控制該功因校正單元10的工作。又，該啟動控制單元11可以微晶片(MCU)或其他可達到相同功能的電路實施。再者，本發明該啟動控制單元11更連接該第一開關14，以於控制該功因校正單元10的同時連動該第一開關14。承此，該啟動控制單元11具有一於該電源供應器100進入該啟動模式時啟動該功因校正單元10並連動導通該第一開關14以短路該熱敏電阻13的開機模式，及一於該電源供應器100進入該關閉模式時關閉該功因校正單元10並連動截止該第一開關14令該熱敏電阻13得抑制流入該功因校正單元10的湧浪電流的關機模式。 As mentioned above, please refer to FIG. 2, the power supply 100 includes at least a power factor correction unit 10 and a startup control unit 11 connected to the power factor correction unit 10. The power factor correction unit 10 is commonly known as PFC (Power Factor Correction) ), the power factor correction unit 10 may be implemented by an interleaved power factor correction circuit, a bridgeless power factor correction circuit, or other circuits with power factor correction functions. Furthermore, the power factor correction unit 10 has a voltage stabilizing capacitor 12, a thermistor 13 connected in series with the voltage stabilizing capacitor 12, and a first switch 14 connected in parallel with the thermistor 13. Wherein, the first switch 14 may be a double carrier junction transistor (BJT), a field effect transistor (FET) or a metal oxide half field effect transistor (MOSFET). In an embodiment, the first switch 14 has a power transmission connected to the voltage stabilizing capacitor 12 The input terminal 141 is connected to the control terminal 142 of the startup control unit 11 and a first ground terminal 143. The thermistor 13 has a first terminal 131 connected to the power input terminal 141 and a first ground connection端143的第二端132. Furthermore, in one embodiment, the first switch 14 may be implemented by an N-type metal-oxide-semiconductor field effect transistor (N-MOSFET). The N-type metal-oxide-semiconductor field-effect transistor has a lower on-resistance, which can avoid the power supply The supplier 100 reduces efficiency due to it. On the other hand, since the first switch 14 is clamped by the thermistor 13, the withstand voltage of the first switch 14 need not be too high. In addition, the positions of the first switch 14 and the thermistor 13 can also be adjusted appropriately according to the circuit design. On the other hand, the activation control unit 11 is connected to the power factor correction unit 10 and controls the operation of the power factor correction unit 10. In addition, the activation control unit 11 may be implemented by a microchip (MCU) or other circuits that can achieve the same function. Furthermore, in the present invention, the start-up control unit 11 is further connected to the first switch 14 to control the power factor correction unit 10 while linking the first switch 14. Accordingly, the startup control unit 11 has a startup mode in which the power factor correction unit 10 is activated when the power supply 100 enters the startup mode and the first switch 14 is connected to short-circuit the thermistor 13 in conjunction, and a When the power supply 100 enters the shutdown mode, the power factor correction unit 10 is turned off and the first switch 14 is turned off so that the thermistor 13 can suppress the inrush current flowing into the power factor correction unit 10 in the shutdown mode.

請參閱圖1、圖2及圖3，於此首先說明該開機模式，該開機模式的工作時機是在一交流電力源300提供足以使該電源供應器100運作的電力，且該電源供應器100收到該負載200發出的該啟閉訊號42為低電位。該電源供應器100收到該啟閉訊號42為低電位時，該啟動控制單元11於該電源供應器100開機的初始可基於該電源供應器100常態性產生的一常備電力(5VSB)來工作。當該電源供應器100正常開機後，該啟動控制單元11可基於該電源供應器100產生的其他電力來運作，非限定僅能以該常備電力(5VSB)運作。 又，該啟動控制單元11啟動該功因校正單元10，使該功因校正單元10開始對所接收電力進行功率因數校正，並向後級電路輸出工作所需的電力。另一方面，該啟動控制單元11於啟動該功因校正單元10的同時，將連動導通該第一開關14，令該熱敏電阻13短路，此時電流的主要路徑如圖3所標示的40。此時，該熱敏電阻13於該電源供應器100正常運作時沒有功用，避免該熱敏電阻13消耗電力，造成該電源供應器100的效率降低。 Please refer to FIG. 1, FIG. 2 and FIG. 3, here is the first description of the boot mode, the operating time of the boot mode is an AC power source 300 to provide sufficient power to operate the power supply 100, and the power supply 100 The start-stop signal 42 received from the load 200 is at a low potential. When the power supply 100 receives that the start-stop signal 42 is at a low potential, the start-up control unit 11 can work based on a standing power (5VSB) generated by the normality of the power supply 100 when the power supply 100 starts up . After the power supply 100 is normally turned on, the startup control unit 11 can operate based on other power generated by the power supply 100, and is not limited to operating only with the standing power (5VSB). In addition, the activation control unit 11 activates the power factor correction unit 10 so that the power factor correction unit 10 starts to perform power factor correction on the received power, and outputs power required for operation to the subsequent stage circuit. On the other hand, the activation control unit 11 will activate the power factor correction unit 10 and simultaneously turn on the first switch 14 to short-circuit the thermistor 13. At this time, the main path of the current is shown as 40 in FIG. 3. . At this time, the thermistor 13 has no function during the normal operation of the power supply 100 to prevent the thermistor 13 from consuming power, resulting in reduced efficiency of the power supply 100.

併請參閱圖1、圖2及圖4，於此說明該關機模式，該關機模式的工作時機是在該交流電力源300無法提供充足的電力以供該電源供應器100運作時，或該電源供應器100收到該負載200發出的該啟閉訊號42為高電位(或開路)時，該啟動控制單元11即停止該功因校正單元10的工作，並連動截止該第一開關14，令該第一開關14所屬的並聯支路進入開路的狀態，使電流僅能由該熱敏電阻13通過，此時的電流路徑如圖4所標示的41。由此可知，該熱敏電阻13未被該第一開關14所短路，而令該熱敏電阻13可於該電源供應器100啟動的初始，減少進入該功因校正單元10的湧浪電流，避免湧浪電流對該電源供應器100所屬元件造成衝擊，導致電路受損。 Please also refer to FIG. 1, FIG. 2 and FIG. 4 to illustrate the shutdown mode. The working time of the shutdown mode is when the AC power source 300 cannot provide sufficient power for the power supply 100 to operate, or the power supply When the supplier 100 receives that the start-stop signal 42 from the load 200 is at a high potential (or open circuit), the start-up control unit 11 stops the work of the power factor correction unit 10 and turns off the first switch 14 in conjunction, so that The parallel branch to which the first switch 14 belongs enters an open state, so that current can only pass through the thermistor 13, and the current path at this time is shown as 41 in FIG. 4. It can be seen that the thermistor 13 is not short-circuited by the first switch 14, so that the thermistor 13 can reduce the inrush current entering the power factor correction unit 10 at the initial start of the power supply 100, To prevent the surge current from impacting the components of the power supply 100 and causing damage to the circuit.

復請參閱圖2，承前實施例，本發明為避免該電源供應器100的電路存在多個接地，導致電路設計複雜與降低系統可靠度。一實施例中，該啟動控制單元11更可具有一與該第一接地端143連接並令該啟動控制單元11與該功因校正單元10形成共地的第二接地端111，以及一與該控制端142連接的工作電壓輸入端112。進一步舉例說明，假設該啟動控制單元11是以微晶片(MCU)實施，該第二接地端111即是該微晶片的接地腳位(GND)，該工作電壓輸入端112則是該微晶片的供電腳位(Vcc)。同理，當該啟動控制單元11是以一般電路實現時，該第二接地端111即為所述一般電路的接地點 (GND)，該工作電壓輸入端112即為所述一般電路的電源輸入點(Vcc)。承此，該啟動控制單元11於該開機模式中將以該常備電力進行工作，該常備電力令該工作電壓輸入端112與該第二接地端111之間形成一電壓差，該電壓差可驅動該第一開關14，而令該第一開關14導通。再者，本實施例除解決前述接地問題之外，本實施例所揭方案更令該第一開關14於系統控制上的可靠度提升，且無須使用額外的周邊電路，進而避免提高電路實施的成本。 Please refer to FIG. 2 again. According to the previous embodiment, in the present invention, to avoid multiple grounds in the circuit of the power supply 100, the circuit design is complicated and the system reliability is reduced. In one embodiment, the startup control unit 11 may further have a second ground terminal 111 connected to the first ground terminal 143 and making the startup control unit 11 and the power factor correction unit 10 form a common ground, and a second ground terminal 111 The working voltage input terminal 112 connected to the control terminal 142. To further illustrate, assume that the startup control unit 11 is implemented by a microchip (MCU), the second ground 111 is the ground pin (GND) of the microchip, and the operating voltage input 112 is the microchip Power supply pin (Vcc). Similarly, when the startup control unit 11 is implemented by a general circuit, the second ground 111 is the ground point of the general circuit (GND), the working voltage input terminal 112 is the power input point (Vcc) of the general circuit. According to this, the startup control unit 11 will operate with the standing power in the power-on mode, the standing power causes a voltage difference between the operating voltage input 112 and the second ground 111 to be driven The first switch 14 turns on the first switch 14. Furthermore, in addition to solving the aforementioned grounding problem in this embodiment, the solution disclosed in this embodiment further improves the reliability of the first switch 14 in system control, and does not require the use of additional peripheral circuits, thereby avoiding the increase in circuit implementation. cost.

復請參閱圖1及圖2，當該功因校正單元10不是以無橋式功因校正電路實施時，該電源供應器100可包含一設置於該功因校正單元10前級的整流輸入單元15，該整流輸入單元15對該交流電力源300提供的交流電力進行整流，並將整流的電力提供該功因校正單元10。另一方面，該電源供應器100更可具有一設置於該功因校正單元10後級的電力轉換單元16。該電力轉換單元16接受該功因校正單元10所輸出的電力，並對此電力進行調變，以供應該負載200所需的電力，於此所揭電力調變可為升壓或降壓。又，該電力轉換單元16可以返馳式轉換器、順向式轉換器、推挽式轉換器、半橋轉換器、全橋轉換器或具有能夠進行直流轉直流(DC/DC)的電路實現。 Please refer to FIGS. 1 and 2 again. When the power factor correction unit 10 is not implemented as a bridgeless power factor correction circuit, the power supply 100 may include a rectification input unit disposed in front of the power factor correction unit 10 15. The rectification input unit 15 rectifies the AC power provided by the AC power source 300, and supplies the rectified power to the power factor correction unit 10. On the other hand, the power supply 100 may further have a power conversion unit 16 disposed behind the power factor correction unit 10. The power conversion unit 16 receives the power output from the power factor correction unit 10 and modulates the power to supply the power required by the load 200. The power modulation disclosed herein may be boost or buck. In addition, the power conversion unit 16 can be implemented by a flyback converter, a forward converter, a push-pull converter, a half-bridge converter, a full-bridge converter, or a circuit capable of direct current to direct current (DC/DC) .

以上已將本發明做一詳細說明，惟以上所述者，僅為本發明的一較佳實施例而已，當不能以此限定本發明實施的範圍，即凡依本發明申請專利範圍所作的均等變化與修飾，皆應仍屬本發明的專利涵蓋範圍內。 The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, which cannot be used to limit the scope of implementation of the present invention, that is, any equivalent made in accordance with the scope of the patent application of the present invention Changes and modifications should still fall within the scope of the patent of the present invention.

100．．．．．．．．．．．．．電源供應器 10．．．．．．．．．．．．．功因校正單元 11．．．．．．．．．．．．．啟動控制單元 111．．．．．．．．．．．．．第二接地端 112．．．．．．．．．．．．．工作電壓輸入端 12．．．．．．．．．．．．．穩壓電容 13．．．．．．．．．．．．．熱敏電阻 131．．．．．．．．．．．．．第一端 132．．．．．．．．．．．．．第二端 14．．．．．．．．．．．．．第一開關 141．．．．．．．．．．．．．電力輸入端 142．．．．．．．．．．．．．控制端 143．．．．．．．．．．．．．第一接地端 15．．．．．．．．．．．．．整流輸入單元 16．．．．．．．．．．．．．電力轉換單元 300．．．．．．．．．．．．．交流電力源100. . . . . . . . . . . . . Power supply 10． . . . . . . . . . . . . Power factor correction unit 11. . . . . . . . . . . . . Start the control unit 111. . . . . . . . . . . . . The second ground terminal 112. . . . . . . . . . . . . Working voltage input terminal 12. . . . . . . . . . . . . Voltage stabilizing capacitor 13. . . . . . . . . . . . . Thermistor 131. . . . . . . . . . . . . First end 132. . . . . . . . . . . . . Second end 14. . . . . . . . . . . . . The first switch 141. . . . . . . . . . . . . Power input 142. . . . . . . . . . . . . Control terminal 143. . . . . . . . . . . . . The first ground terminal 15. . . . . . . . . . . . . Rectifier input unit 16. . . . . . . . . . . . . Power conversion unit 300. . . . . . . . . . . . . AC power source

Claims (5)

一種具湧浪電流抑制的電源供應器，該電源供應器基於一負載發出的一啟閉訊號的電位進入一啟動模式或一關閉模式，該電源供應器包含：一功因校正單元，具有一穩壓電容，一串聯該穩壓電容的熱敏電阻及一並聯該熱敏電阻的第一開關，該第一開關具有一連接該穩壓電容的電力輸入端，一控制端以及一第一接地端，該熱敏電阻具有一連接該電力輸入端的第一端，以及一連接該第一接地端的第二端；以及一啟動控制單元，連接該功因校正單元中的該第一開關的該控制端，該啟動控制單元具有一於該電源供應器進入該啟動模式時啟動該功因校正單元並連動導通該第一開關以短路該熱敏電阻的開機模式，及一於該電源供應器進入該關閉模式時關閉該功因校正單元並連動截止該第一開關令該熱敏電阻得抑制流入該功因校正單元的湧浪電流的關機模式。 A power supply with inrush current suppression, the power supply enters a start mode or a shutdown mode based on a potential of an on-off signal sent by a load, the power supply includes: a power factor correction unit, which has a stable Voltage capacitor, a thermistor in series with the voltage stabilizing capacitor and a first switch in parallel with the thermistor, the first switch has a power input terminal connected to the voltage stabilizing capacitor, a control terminal and a first ground terminal , The thermistor has a first terminal connected to the power input terminal, and a second terminal connected to the first ground terminal; and a start control unit connected to the control terminal of the first switch in the power factor correction unit , The startup control unit has a startup mode that activates the power factor correction unit and turns on the first switch to short-circuit the thermistor when the power supply enters the startup mode, and one enters the shutdown when the power supply enters In the mode, the power factor correction unit is turned off and the first switch is turned off so that the thermistor can suppress the inrush current flowing into the power factor correction unit. 如請求項1所述具湧浪電流抑制的電源供應器，其中，該啟動控制單元具有一與該第一接地端連接令該啟動控制單元與該功因校正單元形成共地的第二接地端以及一與該控制端連接的工作電壓輸入端，該啟動控制單元於該開機模式時，該工作電壓輸入端與該第二接地端之間形成一電壓差，該電壓差令該第一開關導通。 The power supply with surge current suppression according to claim 1, wherein the startup control unit has a second ground terminal connected to the first ground terminal so that the startup control unit and the power factor correction unit form a common ground And an operating voltage input terminal connected to the control terminal, when the startup control unit is in the boot mode, a voltage difference is formed between the operating voltage input terminal and the second ground terminal, the voltage difference makes the first switch conductive . 如請求項1或2所述具湧浪電流抑制的電源供應器，其中，該電源供應器包含一設置於該功因校正單元前級的整流輸入單元。 The power supply device with surge current suppression according to claim 1 or 2, wherein the power supply device includes a rectification input unit provided at the front stage of the power factor correction unit. 如請求項3所述具湧浪電流抑制的電源供應器，其中，該電源供應器包含一設置於該功因校正單元後級的電力轉換單元。 The power supply device with surge current suppression according to claim 3, wherein the power supply device includes a power conversion unit disposed at a subsequent stage of the power factor correction unit. 如請求項1或2任一所述具湧浪電流抑制的電源供應器，其中，該第一開關可為一雙載子接面電晶體、一場效應電晶體或一金氧半場效應電晶體。 The power supply with surge current suppression according to any one of claims 1 or 2, wherein the first switch may be a double carrier junction transistor, a field effect transistor, or a metal oxide half field effect transistor.
TW107119196A 2018-06-04 2018-06-04 Power supply with surge current suppression TWI687015B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101064428A (en) * 2006-04-28 2007-10-31 佛山市顺德区顺达电脑厂有限公司 Burst current control circuit
CN102623962A (en) * 2011-01-30 2012-08-01 深圳市航嘉驰源电气股份有限公司 Adaptive lightning-protection surge-protection control circuit
TW201537885A (en) * 2014-03-24 2015-10-01 Fsp Technology Inc Power conversion apparatus and control method thereof
TW201605157A (en) * 2014-07-25 2016-02-01 Universal Microelectronics Co Ltd Power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101064428A (en) * 2006-04-28 2007-10-31 佛山市顺德区顺达电脑厂有限公司 Burst current control circuit
CN102623962A (en) * 2011-01-30 2012-08-01 深圳市航嘉驰源电气股份有限公司 Adaptive lightning-protection surge-protection control circuit
TW201537885A (en) * 2014-03-24 2015-10-01 Fsp Technology Inc Power conversion apparatus and control method thereof
TW201605157A (en) * 2014-07-25 2016-02-01 Universal Microelectronics Co Ltd Power supply

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