WO2018076294A1 - Circuit anti-retour de courant et de connexion inverse - Google Patents

Circuit anti-retour de courant et de connexion inverse Download PDF

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Publication number
WO2018076294A1
WO2018076294A1 PCT/CN2016/103827 CN2016103827W WO2018076294A1 WO 2018076294 A1 WO2018076294 A1 WO 2018076294A1 CN 2016103827 W CN2016103827 W CN 2016103827W WO 2018076294 A1 WO2018076294 A1 WO 2018076294A1
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WO
WIPO (PCT)
Prior art keywords
circuit
controllable switch
voltage
reverse
control
Prior art date
Application number
PCT/CN2016/103827
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English (en)
Chinese (zh)
Inventor
欧开锋
张生
杨振兴
Original Assignee
海能达通信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2016/103827 priority Critical patent/WO2018076294A1/fr
Publication of WO2018076294A1 publication Critical patent/WO2018076294A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

Definitions

  • the present invention relates to the field of power supply technologies, and in particular, to an anti-reverse connection and current reverse irrigation circuit.
  • Low-power DC power supplies generally use diodes as anti-reverse or current-reverse circuits to prevent damage to the power supply and back-end circuits due to reverse power supply or current back-up, but as power increases, diode losses increase. , seriously affect the efficiency of the power supply.
  • the high-power power supply basically uses a metal oxide field effect transistor (MOSFET) or an integrated chip as an anti-reverse circuit, and the loss is small, but the cost of the integrated chip is high, and the MOSFET cost is low, but the circuit cannot be timely in the presence of current backflow. Turning off the MOSFET may cause the power supply to work abnormally or even risk the damage.
  • the current backflow of this circuit mainly comes from two aspects.
  • the technical problem to be solved by the present invention is to provide an anti-reverse connection and current reverse irrigation circuit to meet the demand of high-power power supply while reducing the cost and shutting down the circuit in time to prevent damage to the power supply and the back-end circuit.
  • a technical solution adopted by the present invention is to provide an anti-reverse connection and current reverse irrigation circuit, including:
  • a voltage input terminal connected to the first input terminal for receiving an input voltage
  • a voltage output end connected to the back end circuit for outputting a voltage to the back end circuit
  • control circuit connected to the voltage input terminal and the voltage output terminal, for receiving a voltage from the voltage input terminal and outputting a first control signal or a second control signal;
  • a switching circuit connected to the control circuit, the voltage output end and the second input end, for receiving the first control signal or the second control signal from the control circuit, the switch circuit receiving the Turning on when a control signal is turned on, and the switch circuit is turned off when receiving the second control signal;
  • An output circuit connecting the voltage input terminal, the control circuit, the switch circuit, the voltage output terminal and the second input terminal, when the first input terminal is connected to a positive pole of the power source and the second input
  • the control circuit outputs the first control signal to the switch circuit, the switch circuit is turned on, and the power source passes through the output circuit, the switch circuit, and the voltage Outputting an output voltage to the back end circuit; when the first input terminal is connected to a negative pole of the power source and the second input end is connected to a positive pole of the power source or a short circuit of a power source connected to the first and second input terminals
  • the output circuit pulls down the voltage supplied to the control circuit by the voltage input terminal such that the control circuit outputs the second control signal to the switch circuit, the switch circuit is turned off, the second input
  • the voltage at the terminal and the sink current are not supplied to the back end circuit through the switching circuit and the voltage output terminal.
  • the control circuit includes first and second resistors, first and second controllable switches, a first end of the first resistor is connected to the voltage input end, and a second end of the first resistor is connected to the second end a control end of the first controllable switch, a first end of the first controllable switch is connected to the voltage input end, and a second end of the first controllable switch is connected to a second end of the second controllable switch And the switch circuit, the first end of the second controllable switch is connected to the switch circuit and the voltage output end, and the control end of the second controllable switch is connected to the control of the first controllable switch And the first end of the second resistor, the second end of the second resistor is connected to the switch circuit and the voltage output end.
  • the first controllable switch is an NPN-type triode, and the control end, the first end and the second end of the first controllable switch respectively correspond to a base, a collector and an emitter of the NPN-type triode;
  • the second controllable switch is a PNP type transistor, and the control end, the first end and the second end of the second controllable switch respectively correspond to a base, a collector and an emitter of the PNP type transistor.
  • the switch circuit includes a third resistor, a third controllable switch, and a first diode, and the control end of the third controllable switch is connected to the first and second controllable switches via the third resistor
  • the second end of the third controllable switch is connected to the first end of the second controllable switch, the second end of the second resistor, and the voltage output end, the third a first end of the control switch is connected to the second input end, an anode of the first diode is connected to a second end of the third controllable switch, and a cathode of the first diode is connected to the third end The first end of the controllable switch.
  • the third controllable switch is an N-type MOS field effect transistor, and the control end, the first end and the second end of the third controllable switch respectively correspond to gates and drains of the N-type MOS field effect transistor Extreme and source.
  • the output circuit includes a fourth resistor, fourth and fifth controllable switches, second and third diodes, and a first end of the fourth resistor is connected to the voltage input end, and the fourth resistor
  • the second end is connected to the control end of the fourth controllable switch, the first end of the fourth controllable switch is connected to the second end of the first resistor, and the second end of the fourth controllable switch is connected
  • An anode of the second diode, a cathode of the second diode is connected to a second end of the third controllable switch, and a second end of the fifth controllable switch is connected to the fourth resistor a second end and a control end of the fourth controllable switch, the control end of the fifth controllable switch being connected to the first end of the fifth controllable switch and connected to the anode of the third diode
  • the cathode of the third diode is connected to the second input end and the first end of the third controllable switch.
  • the fourth controllable switch is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch respectively correspond to a base, a collector and an emitter of the NPN-type triode;
  • the fifth controllable switch is a PNP type triode, and the control end, the first end and the second end of the fifth controllable switch respectively correspond to a base, a collector and an emitter of the PNP type triode.
  • the fourth controllable switch is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch respectively correspond to a base, a collector and an emitter of the NPN-type triode;
  • the fifth controllable switch is a PNP type triode, and the control end, the first end and the second end of the fifth controllable switch respectively correspond to a base, an emitter and a collector of the PNP type triode.
  • the output circuit includes a fourth resistor, fourth and fifth controllable switches, second and third diodes, and a first end of the fourth resistor is connected to the voltage input end, and the fourth resistor
  • the second end is connected to the control end of the fourth controllable switch, the control end of the fifth controllable switch, and the first end of the fifth controllable switch, and the first end of the fourth controllable switch Connecting a second end of the first resistor, a second end of the fourth controllable switch is connected to an anode of the second diode, and a cathode of the second diode is connected to the third controllable switch
  • the second end of the fifth controllable switch is connected to the anode of the third diode, the cathode of the third diode is connected to the second input end and the third controllable The first end of the switch.
  • the fourth controllable switch is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch respectively correspond to a base, a collector and an emitter of the NPN-type triode;
  • the fifth controllable switch is an NPN type triode, and the control end, the first end and the second end of the fifth controllable switch respectively correspond to a base, a collector and an emitter of the NPN type triode.
  • the fourth controllable switch is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch respectively correspond to a base, a collector and an emitter of the NPN-type triode;
  • the fifth controllable switch is an NPN type triode, and the control end, the first end and the second end of the fifth controllable switch respectively correspond to a base, an emitter and a collector of the NPN type triode.
  • the output circuit further includes a fourth diode, an anode of the fourth diode is connected to a second end of the fourth resistor, and a cathode of the fourth diode is connected to the first resistor Second end.
  • the output circuit further includes a first capacitor, the first end of the first capacitor is connected to the voltage input end, and the second end of the first capacitor is connected to the second end of the third controllable switch.
  • the anti-reverse and current sink circuit further includes an auxiliary source, the input end of the auxiliary source is connected to the first input end, and the output end of the auxiliary source is connected to the voltage input end.
  • the anti-reverse and current sink circuit further includes a slow start circuit connected between the first input end and the voltage output end.
  • the anti-reverse connection and current reverse irrigation circuit further includes a DC voltage conversion circuit, and the DC voltage conversion circuit is connected to the slow start circuit.
  • the anti-reverse and current sink circuit further includes a second capacitor connected between the slow start circuit and the DC voltage conversion circuit.
  • the anti-reverse and current sinking circuit of the present invention provides the first and second control signals through the control circuit to control the switching circuit to be turned on or By cutting off, the output circuit is further controlled to provide a voltage to the back-end circuit to meet the demand of the high-power power supply while reducing the cost and shutting down the circuit in time to prevent the power supply from being reversed or the current back-fluxing damage the power supply and the back-end circuit. .
  • FIG. 1 is a circuit diagram of a first embodiment of an anti-reverse and current sink circuit of the present invention
  • Figure 2 is a circuit diagram of a second embodiment of the anti-reverse and current sink circuit of the present invention.
  • Figure 3 is a circuit diagram of a third embodiment of the anti-reverse and current sink circuit of the present invention.
  • Figure 4 is a circuit diagram of a fourth embodiment of the anti-reverse and current sink circuit of the present invention.
  • FIG. 1 is a circuit diagram of a first embodiment of the anti-reverse and current sink circuit of the present invention.
  • the anti-reverse connection and current reverse irrigation circuit includes a voltage input terminal VCC connected to the first input terminal for receiving an input voltage, and a voltage output terminal VOUT connected to the back end circuit for outputting a voltage to the device.
  • the control circuit 10 is connected to the voltage input terminal VCC and the voltage output terminal VOUT for receiving a voltage from the voltage input terminal VCC and outputting a first control signal or a second control signal; the switch circuit 20 Connecting the control circuit 10, the voltage output terminal VOUT, and the second input terminal for receiving the first control signal or the second control signal from the control circuit 10, and the switch circuit 20 receives the When the first control signal is turned on, the switch circuit 20 is turned off when receiving the second control signal; the output circuit 30 is connected to the voltage input terminal VCC, the control circuit 10, the switch circuit 20, the a voltage output terminal VOUT and the second input end, when the first input terminal is connected to the positive pole of the power source and the second input terminal is connected to the negative pole of the power source, the control circuit 10 outputs the first control signal Giving a switching circuit 20, the switching circuit 20 is turned on, the power supply outputs a voltage to the back end circuit through the output circuit 30, the switching circuit 20, and the voltage output terminal VOUT; when the first input When the terminal is connected to the negative pole of the power source
  • the control circuit 10 includes first and second resistors R1 and R2, first and second controllable switches T1 and T2, and a first end of the first resistor R1 is connected to the voltage input terminal VCC.
  • the second end of the first resistor R1 is connected to the control end of the first controllable switch T1, and the first end of the first controllable switch T1 is connected to the voltage input terminal VCC, the first controllable switch T1
  • the second end of the second controllable switch T2 is connected to the switch circuit 20, and the first end of the second controllable switch T2 is connected to the switch circuit 20 and the voltage output terminal VOUT.
  • the control end of the second controllable switch T2 is connected to the control end of the first controllable switch T1 and the first end of the second resistor R2, and the second end of the second resistor R2 is connected to the switch circuit 20 and the voltage output terminal VOUT.
  • the first controllable switch T1 is an NPN-type triode, and the control end, the first end, and the second end of the first controllable switch T1 respectively correspond to a base and a set of the NPN-type triode An electrode and an emitter;
  • the second controllable switch T2 is a PNP type transistor, and the control end, the first end and the second end of the second controllable switch T2 respectively correspond to a base and a collector of the PNP type transistor And the emitter.
  • the switch circuit 20 includes a third resistor R3, a third controllable switch T3, and a first diode D1.
  • the control end of the third controllable switch T3 is connected to the first and the third via the third resistor R3.
  • the second end of the second controllable switch T1 is connected to the second end of the second controllable switch T2, the second end of the second controllable switch T2, and the second end of the second resistor R2 a voltage output terminal VOUT, a first end of the third controllable switch T3 is connected to the second input end, and an anode of the first diode D1 is connected to a second end of the third controllable switch T3.
  • the cathode of the first diode D1 is connected to the first end of the third controllable switch T3.
  • the third controllable switch T3 is an N-type MOS field effect transistor, and the control end, the first end, and the second end of the third controllable switch T3 respectively correspond to the N-type MOS field effect The gate, drain and source of the tube.
  • the first control signal received by the third controllable switch T3 is a high level signal
  • the second control signal received by the third controllable switch T3 is a low level signal.
  • the first diode D1 is a body diode of the third controllable switch T3, and the first diode D1 is packaged with the third controllable switch T3.
  • the output circuit 30 includes a fourth resistor R4, a fourth controllable switch T4, and a fifth controllable switch T5, a second diode D2, and a third diode D3.
  • the first end of the fourth resistor R4 is connected.
  • the second end of the fourth resistor R4 is connected to the control end of the fourth controllable switch T4, and the first end of the fourth controllable switch T4 is connected to the first resistor R1.
  • the second end of the fourth controllable switch T4 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is connected to the second of the third controllable switch T3
  • the second end of the fifth controllable switch T5 is connected to the second end of the fourth resistor R4 and the control end of the fourth controllable switch T4, and the control end of the fifth controllable switch T5 is connected.
  • a first end of the fifth controllable switch T5 is connected to an anode of the third diode D3, a cathode of the third diode D3 is connected to the second input end, and the third controllable The first end of the switch T3.
  • the fourth controllable switch T4 is an NPN-type triode, and the control end, the first end, and the second end of the fourth controllable switch T4 respectively correspond to a base and a set of the NPN-type triode An electrode and an emitter;
  • the fifth controllable switch T5 is a PNP type transistor, and the control end, the first end and the second end of the fifth controllable switch T5 respectively correspond to a base and a collector of the PNP type transistor And the emitter.
  • the fourth and fifth controllable switches T4 and T5 are integrated pairs of transistors, which are packaged together, and the second and third diodes D2 and D3 are integrated pairs of diodes, which are packaged together.
  • the output circuit 30 further includes a fourth diode D4, an anode of the fourth diode D4 is connected to a second end of the fourth resistor R4, and a cathode of the fourth diode D4 is connected to the first a second end of the resistor R1; the output circuit 30 further includes a first capacitor C1, a first end of the first capacitor C1 is connected to the voltage input terminal VCC, and a second end of the first capacitor C1 is connected to the second end The second end of the third controllable switch T3.
  • the anti-reverse and current sink circuit further includes an auxiliary source 40, an input end of the auxiliary source 40 is connected to the first input end, and an output end of the auxiliary source 40 is connected to the voltage input terminal VCC;
  • the anti-reverse connection and current reversal circuit further includes a slow start circuit 50 connected between the first input end and the voltage output end VOUT; the anti-reverse connection and current reverse irrigation circuit further
  • the DC voltage conversion circuit 60 is connected to the slow start circuit 50;
  • the anti-reverse and current reverse circuit further includes a second capacitor C2, and the second capacitor C2 is connected to the
  • the startup circuit 50 is connected to the DC voltage conversion circuit 60.
  • the auxiliary source 40 is configured to supply a voltage of 12V to the voltage input terminal VCC
  • the DC voltage conversion circuit 60 is configured to adaptively convert a DC voltage to meet circuit requirements, the slow start circuit 50 and the DC voltage.
  • the conversion circuit 60 is a prior art, and is not described herein again.
  • the first capacitor C1 is a decoupling capacitor
  • the second capacitor C2 is a storage capacitor.
  • the control end of the first controllable switch T1 receives a high level signal.
  • the second controllable switch T2 is turned off, and the voltage input terminal VCC provides an output voltage of the power source (such as a high level signal) through the first controllable switch T1 and the third resistor R3.
  • the third controllable The first terminal voltage of the switch T3 is greater than the voltage of the second terminal thereof, that is, the third controllable switch T3 is a negative voltage drop, and then the voltage input terminal VCC passes the output voltage of the power source through the fourth The resistor R4, the fourth controllable switch T4, the second diode D2, and the voltage output terminal VOUT are provided to the back end circuit, and the fourth controllable switch T4 is forward biased and turned on.
  • the second controllable switch T2 is turned on such that the control terminal of the third controllable switch T3 receives a low level signal,
  • the third controllable switch T3 is turned off, thereby preventing the reverse voltage or the reverse current of the second input terminal from being supplied to the back end circuit through the third controllable switch T3 and the voltage output terminal VOUT, thereby achieving the protection circuit. purpose.
  • FIG. 2 is a circuit diagram of a second embodiment of the anti-reverse and current sink circuit of the present invention.
  • the second embodiment of the anti-reverse and current sink circuit differs from the first embodiment of the anti-reverse and current sink circuit in that: the fourth controllable switch T4 is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch T4 respectively correspond to a base, a collector and an emitter of the NPN-type transistor; the fifth controllable switch T5 For the PNP type transistor, the control end, the first end and the second end of the fifth controllable switch T5 respectively correspond to the base, the emitter and the collector of the PNP type transistor.
  • FIG. 3 is a circuit diagram of a third embodiment of the anti-reverse and current sink circuit of the present invention.
  • the third embodiment of the anti-reverse and current sink circuit differs from the first embodiment of the anti-reverse and current sink circuit in that the output circuit 30 includes a fourth resistor R4, a fourth controllable switch T4 and a fifth controllable switch T5, a second diode D2 and a third diode D3, the first end of the fourth resistor R4 is connected to the voltage input terminal VCC, The second end of the fourth resistor R4 is connected to the control end of the fourth controllable switch T4, the control end of the fifth controllable switch T5, and the first end of the fifth controllable switch T5.
  • a first end of the fourth controllable switch T4 is connected to the second end of the first resistor R1, and a second end of the fourth controllable switch T4 is connected to the anode of the second diode D2, the second a cathode of the diode D2 is connected to the second end of the third controllable switch T3, and a second end of the fifth controllable switch T5 is connected to the anode of the third diode D3, the third diode
  • the cathode of the tube D3 is connected to the second input and the first end of the third controllable switch T3.
  • the fourth controllable switch T4 is an NPN-type triode, and the control end, the first end, and the second end of the fourth controllable switch T4 respectively correspond to a base and a set of the NPN-type triode An electrode and an emitter;
  • the fifth controllable switch T5 is an NPN type transistor, and the control end, the first end and the second end of the fifth controllable switch T5 respectively correspond to a base and a collector of the NPN transistor And the emitter.
  • FIG. 4 is a circuit diagram of a fourth embodiment of the anti-reverse and current sink circuit of the present invention.
  • the fourth embodiment of the anti-reverse and current sink circuit is different from the third embodiment of the anti-reverse and current sink circuit in that: the fourth controllable switch T4 is an NPN-type triode, and the control end, the first end and the second end of the fourth controllable switch T4 respectively correspond to a base, a collector and an emitter of the NPN-type transistor; the fifth controllable switch T5 For the NPN type transistor, the control end, the first end and the second end of the fifth controllable switch T5 respectively correspond to the base, the emitter and the collector of the NPN type transistor.
  • the anti-reverse connection and current back-flux circuit provides first and second control signals through the control circuit to control whether the switch circuit is turned on or off, thereby controlling whether the output circuit supplies a voltage to the back-end circuit to satisfy High-power power requirements reduce costs at the same time and can shut down the circuit in time to prevent damage to the power supply and back-end circuits caused by reverse power supply or current back-up.

Abstract

Un circuit anti-retour de courant et de connexion inverse comprend une extrémité d'entrée de tension (VCC) ; une extrémité de sortie de tension (VOUT) ; un circuit de commande (10) pour délivrer un premier signal de commande ou un second signal de commande ; un circuit de commutation (20), qui est allumé lorsque le premier signal de commande est reçu, et qui est éteint lorsque le second signal de commande est reçu ; et un circuit de sortie (30). Lorsqu'une première extrémité d'entrée est connectée à une électrode positive d'une alimentation électrique et qu'une seconde extrémité d'entrée est connectée à une électrode négative de l'alimentation électrique, l'alimentation électrique délivre une tension à un circuit dorsal ; et lorsque la première extrémité d'entrée est connectée à l'électrode négative de l'alimentation électrique et que la seconde extrémité d'entrée est connectée à l'électrode positive de l'alimentation électrique ou que l'alimentation électrique se trouve dans un court-circuit, la tension et le courant de retour ne sont pas fournis au circuit dorsal.
PCT/CN2016/103827 2016-10-28 2016-10-28 Circuit anti-retour de courant et de connexion inverse WO2018076294A1 (fr)

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CN109149522A (zh) * 2018-09-18 2019-01-04 深圳市思乐数据技术有限公司 一种电机控制保护装置及打印机、阅读器
CN110224617A (zh) * 2019-07-08 2019-09-10 维尔纳（福建）电机有限公司 一种防反接的可控硅整流线路
CN111464169A (zh) * 2020-04-13 2020-07-28 厦门厦华科技有限公司 一种逻辑供电开关控制电路
CN113067468A (zh) * 2021-04-15 2021-07-02 常州易控汽车电子股份有限公司 一种集成防反接及高边开关电路和控制器
CN114899788A (zh) * 2022-05-17 2022-08-12 深圳英众世纪智能科技有限公司 一种电源控制方法及电子设备
CN116667303A (zh) * 2023-07-28 2023-08-29 深圳市高斯宝电气技术有限公司 一种dc电源的输入防反接电路

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CN108512539A (zh) * 2018-05-31 2018-09-07 深圳智微电子科技有限公司 一种宽带载波信号通道开关电路及系统
CN108512539B (zh) * 2018-05-31 2024-02-09 深圳智微电子科技股份有限公司 一种宽带载波信号通道开关系统
CN109149522A (zh) * 2018-09-18 2019-01-04 深圳市思乐数据技术有限公司 一种电机控制保护装置及打印机、阅读器
CN109149522B (zh) * 2018-09-18 2023-11-24 深圳市思乐数据技术有限公司 一种电机控制保护装置及打印机、阅读器
CN110224617A (zh) * 2019-07-08 2019-09-10 维尔纳（福建）电机有限公司 一种防反接的可控硅整流线路
CN110224617B (zh) * 2019-07-08 2024-03-29 维尔纳集电电子科技(福建)有限公司 一种防反接的可控硅整流线路
CN111464169A (zh) * 2020-04-13 2020-07-28 厦门厦华科技有限公司 一种逻辑供电开关控制电路
CN113067468A (zh) * 2021-04-15 2021-07-02 常州易控汽车电子股份有限公司 一种集成防反接及高边开关电路和控制器
CN113067468B (zh) * 2021-04-15 2022-09-06 常州易控汽车电子股份有限公司 一种集成防反接及高边开关电路和控制器
CN114899788A (zh) * 2022-05-17 2022-08-12 深圳英众世纪智能科技有限公司 一种电源控制方法及电子设备
CN114899788B (zh) * 2022-05-17 2023-03-31 深圳英众世纪智能科技有限公司 一种电源控制方法及电子设备
CN116667303A (zh) * 2023-07-28 2023-08-29 深圳市高斯宝电气技术有限公司 一种dc电源的输入防反接电路

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