WO2003032105A1 - Circuit d'alimentation de secours - Google Patents

Circuit d'alimentation de secours Download PDF

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Publication number
WO2003032105A1
WO2003032105A1 PCT/JP2001/008643 JP0108643W WO03032105A1 WO 2003032105 A1 WO2003032105 A1 WO 2003032105A1 JP 0108643 W JP0108643 W JP 0108643W WO 03032105 A1 WO03032105 A1 WO 03032105A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
igbt
group
power supply
mosfet
Prior art date
Application number
PCT/JP2001/008643
Other languages
English (en)
Japanese (ja)
Inventor
Takeshi Suzuki
Harumi Suzuki
Original Assignee
Takeshi Suzuki
Harumi Suzuki
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 Takeshi Suzuki, Harumi Suzuki filed Critical Takeshi Suzuki
Priority to PCT/JP2001/008643 priority Critical patent/WO2003032105A1/fr
Priority to JP2003535010A priority patent/JP3611039B2/ja
Publication of WO2003032105A1 publication Critical patent/WO2003032105A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/04—Regulating voltage or current wherein the variable is ac

Definitions

  • the present invention relates to a standby power circuit using a MOS FET (hereinafter, referred to as a FET) or an IGBT (InsulateGateBipolarTran) as a switch element.
  • a MOS FET hereinafter, referred to as a FET
  • IGBT InsulGateBipolarTran
  • standby power can often be classified into the following two parts. In the circuit of the present invention, only (1) is discussed as a standby furnace.
  • a circuit that uses a commercial power supply of 100 V AC (in the case of Japan) as a power supply, rectifies and smoothes the voltage converted by a transformer to a DC voltage of about 5 V to 15 V and uses it as an auxiliary power supply is often used.
  • this standby power is referred to as “standby power for auxiliary power control”.
  • the majority of standby power in conventional circuits is this power.
  • control circuit standby power Since this standby power belongs to the equipment circuit designer, it is not discussed here.
  • “Standby power for control circuit” refers to a circuit that activates the control circuit by flowing current when a signal does not flow much during standby and a circuit that uses a microcomputer when waiting, such as a circuit that uses a microcomputer. There is a circuit that always generates current by generating a click signal.
  • standby power for auxiliary power control is the power of battery B
  • standby power for control circuit is the control circuit.
  • the power remains the same, but the power of diode D3, resistor R and FETQ3 is not simply replaced by conventional circuits. However, since this power is proportional to the current of the control circuit, it is included in “standby power for control circuit” here. Connect the circuit to the power supply. At the moment of the continuation, power is generated in the diode D3, the resistor R and the FETQ3 due to the charging current to the capacitor C, but is ignored here because it is small power.
  • the main switch circuit of the circuit that supplies power from the power supply to the load circuit is the main power switch circuit, and the on / off operation of the main power switch circuit during standby is described as on / off, and the main power switch circuit is controlled.
  • the power supply of the control circuit is used as an auxiliary power supply.
  • the standby state is a state in which the main power switch circuit is off and only the auxiliary power supply is on.
  • the switch element is the main semiconductor element of the main power switch circuit, which is a MOSFET or IGBT and its associated MOSFET and IGBT.
  • the threshold voltage of FET is the gate-source voltage at which the drain current is cut off.
  • a switch circuit is a circuit that performs a switch operation that is an on / off operation, and a contact terminal of the switch circuit is a terminal corresponding to a terminal for external connection of the switch contact.
  • the FET shown in the embodiment is an N-channel MOS FET unless otherwise specified, but a P-channel MOS FET can also be used with a simple circuit change.
  • the inversion of the control circuit output or the inversion of the digital circuit output is a high-to-low operation or a port-to-high operation, and the inversion of the main power switch circuit is an on-to-off operation or an off-to-on operation.
  • each terminal in the explanation is based on the zero point of each circuit.
  • the zero point is the switch element is the source in a MOS FET and the emitter in an IGBT.
  • Skill Conventional standby power circuits often use a circuit as shown in Fig. 4.
  • the circuit of FIG. 4 will be described.
  • a relay contact RS operated by a relay coil RC and a load circuit RL (The load may be a simple load, but the circuit may be used as a load. ) are connected in series.
  • the AC power supply is connected to the primary winding of the insulation transformer TR, and the secondary winding voltage of the insulation transformer TR is rectified and smoothed.
  • a series circuit of a relay coil RC and an NPN transistor Q6 between both terminals of the auxiliary power supply EH.
  • the output OP of the control circuit SG is connected to the base of the transistor Q6 via a resistor (not shown).
  • FIG. 4 An AC power supply AC is applied to the primary winding of the insulation transformer TR, and a DC voltage obtained by rectifying and smoothing the secondary winding voltage of the insulation transformer TR is applied to the power supply terminal of the control circuit SG as an auxiliary power supply EH.
  • a DC voltage obtained by rectifying and smoothing the secondary winding voltage of the insulation transformer TR is applied to the power supply terminal of the control circuit SG as an auxiliary power supply EH.
  • infrared rays and the like modulated and emitted by a remote controller are received by the light receiving element in the control circuit SG, but the SG output switches between high and low each time the light receiving element receives light.
  • An object of the present invention is to provide a circuit that solves such a problem at a small size, light weight, and low cost. Disclosure of the invention
  • an AC power supply and a load circuit are connected in series to an anti-series circuit of first and second FETs each having a gate and a source connected to each other.
  • the source of the first and second FETs is set to 0 point
  • the black point side of the AC power supply is set to point a.
  • a capacitor, a third FET, a resistor, and a diode with the point a side as an anode are connected in series from point 0, and at the same time, gates of point 0 and third FET are connected. Connect the battery with the zero point on the negative side in between.
  • the capacitor is charged with the difference between the battery voltage, which is the gate voltage of the third FET, and the threshold voltage of the third FET with reference to the zero point, and the capacitor voltage is used as an auxiliary power supply by the control circuit.
  • the control circuit output is applied between the gate and source (point 0) of the first and second FETs to control both FETs.
  • the first and second FETs are the switching elements of the main power switch circuit.When both FETs are turned on, the AC power supply and the load circuit are connected, and when both FETs are turned off, the AC power supply and the load circuit are disconnected. Wait state.
  • the third FET is for charging the capacitor.
  • FIG. 1 is a circuit diagram for a first AC power supply according to the present invention, and is a standby power circuit diagram using two FETs as switch elements of a main power supply switch circuit.
  • FIG. 2 is a circuit diagram for a second AC power supply according to the present invention, and is a standby power circuit diagram using four diodes and one FET as a switch element of a main power supply switch circuit.
  • FIG. 3 is a circuit diagram for a DC power supply according to the present invention, and is a standby power circuit diagram using one FET as a switch element of a main power supply switch circuit.
  • FIG. 4 is a circuit diagram for an AC power supply according to the prior art, and is a standby power circuit diagram using a relay for a main power switch circuit and an insulating transformer for an auxiliary power supply.
  • FIG. 1 shows a first embodiment according to claim 1 of the present invention.
  • an inverse series circuit in which the gates and sources of FETs Q1 and Q2 are connected to each other is connected in series to an AC power supply AC and a load circuit RL.
  • the sources of FET Q 1 and Q 2 are set to 0 point
  • the black point side of AC power supply AC is set to point a
  • the non-spot side of AC power supply AC is set to point b
  • the drain of FET Q 2 and load circuit RL Let the connection point be point c.
  • the direction of FETQ3 is that the drain is at point a and the source is at point 0.
  • the voltage of the difference between the voltage of the battery B and the threshold voltage of the FET Q3 is charged in the capacitor C, and that voltage is connected to the power supply terminal of the control circuit SG as an auxiliary power supply EH.
  • the output OP is connected to the gates of FETQ1 and Q2 and the zero point.
  • FETQ 1 and Q2 are switch times
  • the switch elements that make up the circuit are both contact drain terminals of the main power switch circuit, and FETQ3 is for charging the capacitor C.
  • the flywheel diodes, which are parasitic diodes of FETQ 1 and Q2, are diodes D1 and D2, respectively. The operation of FIG. 1 will be described.
  • the voltage of the capacitor C is applied as an auxiliary power supply EH to the power supply terminal of the control circuit SG, and the output OP of the control circuit SG is applied between the gates of the FETs Q1 and Q2 and between the zero points. If the output OP of the control circuit SG is high, the FETs Q1 and Q2 are turned on and current flows through the load circuit RL.If the output OP is low, the FETQ1 and Q2 are turned off, so the current flows through the load circuit RL. Enters a standby state where it does not flow.
  • FETs Q1 and Q2 in this circuit are the switching elements of the main power switch circuit.
  • the control circuit SG a circuit in which the control circuit SG is composed of a T-F / F (T-flip-flop) and the output OP of the control circuit SG inverts between high and low every time a signal comes to the control circuit SG Therefore, each time a signal comes, FETQ 1 and Q2 turn on / off and the load circuit RL turns on / off.
  • the FETs Q1 and Q2 may be a circuit that is turned on and off by an external signal, or a circuit that is turned on and off by an internal signal such as a clock.
  • This circuit is When a current flows from the capacitor C to the control circuit SG and the capacitor voltage drops, the gate-source voltage of the FETQ3 becomes larger than the threshold voltage, the FETQ3 turns on, and the charging current flows to the capacitor C and the capacitor Increase the voltage of C. When the difference between the voltage of the battery B and the voltage of the capacitor C reaches the threshold voltage of FETQ 3, the FETQ 3 is turned off, and the flow of current into the capacitor C stops. In this circuit, the auxiliary power supply voltage, which is the voltage of the capacitor C, is automatically controlled.
  • the current of battery B is practically zero, and the "standby power for auxiliary power control" is practically zero.
  • the power consumption of the diode D3, resistor R and FETQ3 due to the charging current to the capacitor C at the moment when the outlet is connected to the AC power supply AC is ignored because it is small and the ⁇ standby power for control circuit '' is designed. And will not be discussed here as previously described.
  • the voltage of the capacitor C is determined by the voltage of the battery B
  • the instantaneous current of the control circuit SG is determined by the capacitor C
  • the resistor R is determined by the average current of the control circuit SG.
  • a secondary battery may be used instead of the capacitor C.
  • the load circuit RL is a circuit using a transformer
  • a winding whose peak value is slightly higher than the voltage of the capacitor C during standby is added to the transformer, and one terminal of the winding is set to the 0 terminal. If the other terminal of the winding is connected to the + terminal of the capacitor via a diode, the circuit will supply current from the winding to the capacitor C during the operation of the transformer, and the winding loss will increase. However, the loss in the resistor R is eliminated, and the overall loss is often small.
  • the direction of the diode is such that the anode is on the winding side.
  • the voltage at the connection point where two resistors are connected in series between the cathode of the diode D3 and the zero point may be used as the gate voltage of the FETQ3.
  • the Gut voltage at that time becomes a pulsating voltage, and the peak voltage determines the charging voltage for the capacitor C.
  • the resistor used at that time can be used with an ultra-high resistance such as several tens of ohms. When two resistors are used, the resistor on the zero point side may be used as a fastener diode. If the gate voltage of FETQ3 is made variable, the voltage of capacitor C can also be made variable. Diode D 3 cathode to smooth the voltage rectified by diode D 3 A capacitor may be connected between points 0 and 0.
  • the resistor R connected between the diode D 3 and the FET Q 3 may be connected between the FET Q 3 and the capacitor C.
  • FIG. 2 shows a second embodiment according to claim 1 of the present invention.
  • This circuit consists of an anti-series circuit in which the power sources of diodes D4 and D 6 are connected between points b and c in Fig. 1, and an anti-series circuit in which the anodes of diodes D 5 and D 7 are connected in parallel.
  • the zero point of this circuit is the source of FETQ 4.
  • Capacitor C, FETQ3, resistor and diode D3 with anode at point a are connected in series between point 0 and point 0, and between point 0 and the gate of FETQ3.
  • FETQ4 is a switch element of the main power switch circuit, the drain and the source are contact terminals, and the FETQ3 is for charging the capacitor C.
  • the voltage of the charged capacitor C becomes the auxiliary power supply EH.
  • the auxiliary power supply EH is connected to the power supply terminal of the control circuit SG.
  • the output OP of the control circuit SG is connected to the gate of FETQ4 and the zero point. The operation of FIG. 2 will be described.
  • FETB3 is turned on by battery B.
  • the current of AC will be AC power source
  • the voltage of the capacitor C is applied to the power supply terminal of the control circuit SG as the auxiliary power supply EH. If the output OP of the control circuit SG is high, FETQ4 is turned on, so that current flows through the load circuit RL and the output OP is low. Then, FETQ 4 is turned off, and the load circuit RL enters a standby state in which no current flows.
  • FIG. 3 shows an embodiment according to claim 2 of the present invention.
  • This circuit connects the load circuit RL with the positive terminal of the DC power supply E as the point a, connects the source of the FETQ5 to the negative terminal of the DC power supply E that is both the point b and the zero point, and separates the load circuit RL. And the drain of FETQ5. Connect capacitor C, FETQ3, and resistor R in series between point a and point 0, and connect battery B with point 0 negative between point 0 and the gate of FETQ3.
  • FETQ5 is a switching element of the main power switch circuit, and its drain and source are contact terminals, and FETQ3 is for charging the capacitor C.
  • the voltage of the charged capacitor C becomes the auxiliary power supply EH, the auxiliary power supply EH is connected to the power supply terminal of the control circuit SG, and the output OP of the control circuit SG is connected to the gate and the zero point of FETQ5.
  • FIG. 3 The operation of FIG. 3 will be described.
  • Battery B turns FETQ 3 on, so the current from power supply E flows through power supply E—resistor R—FETQ 3—capacitor C—power supply E to charge capacitor C.
  • the voltage of the charged capacitor C is applied as an auxiliary power supply EH to the power supply terminal of the control circuit SG. If the output OP of the control circuit SG is high, the FETQ 5 is turned on and current flows to the load circuit RL, and the output OP is If low, F ETQ 5 Since 0 is turned off, current does not flow through the load circuit RL, and the load circuit RL enters a standby state.
  • the DC power supply E may be a rectified AC power supply or a battery. Others are the same as in Figure 1.
  • This circuit can control a plurality of series circuits of the load circuits RL and FET with a plurality of control circuit outputs.
  • the standby power circuit for auxiliary power supply control of the present invention is a completely different idea from the conventional one, without using a large, heavy, and expensive transformer, and connecting the battery voltage between the zero point and the FET gate to reduce the battery voltage.
  • the capacitor is charged with the voltage of the difference between the threshold voltages of the FETs, and the charged capacitor voltage is used as an auxiliary power supply for the power supply of the control circuit.
  • the high / low output of the control circuit turns on and off the FET, which is the switch element. Circuit.
  • the “standby power for auxiliary power control” is substantially zero at the power of the battery, and the standby power of the auxiliary power consumed by the control circuit is automatically replenished. .
  • the circuit since the circuit is small, light, and inexpensive, the circuit itself is very inexpensive and a compact circuit, while saving standby power.
  • the use of appliances that require standby power in household appliances and industrial machines around the world will further increase. At present, when environmental destruction on a global scale has become a problem, there is a need worldwide for a large standby power saving circuit such as the circuit of the present invention for preventing global warming.

Abstract

Cette invention concerne un circuit d'alimentation de secours s'utilisant lorsque l'interrupteur principal d'alimentation est sur arrêt et qu'une source d'alimentation du circuit de commande (source d'alimentation auxiliaire) commandant le circuit de l'interrupteur principal est sur marche. Une source d'alimentation en courant alternatif et un circuit de charge sont branchés en série sur le circuit de l'interrupteur principal dans lequel les drains des premier et deuxième transistors à effet de champ métal-oxyde semi-conducteurs (MOSFET), dont les portes et les sources (point 0) sont reliées entres elles, sont utilisés comme bornes de contact. Un condensateur, un troisième MOFSET, une résistance et une diode sont connectés en série et dans cet ordre à partir côté point 0 entre le noeud de connexion de la source d'alimentation en courant alternatif et le circuit de charge d'une part, le point 0 d'autre part. Une batterie est connectée entre la porte du troisième MOSFET et le point 0. Le condensateur chargé par le circuit est utilisé comme source d'alimentation du circuit de commande pour mettre les transistors MOFSET sous tension/hors tension.
PCT/JP2001/008643 2001-10-01 2001-10-01 Circuit d'alimentation de secours WO2003032105A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2001/008643 WO2003032105A1 (fr) 2001-10-01 2001-10-01 Circuit d'alimentation de secours
JP2003535010A JP3611039B2 (ja) 2001-10-01 2001-10-01 待機電力回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/008643 WO2003032105A1 (fr) 2001-10-01 2001-10-01 Circuit d'alimentation de secours

Publications (1)

Publication Number Publication Date
WO2003032105A1 true WO2003032105A1 (fr) 2003-04-17

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PCT/JP2001/008643 WO2003032105A1 (fr) 2001-10-01 2001-10-01 Circuit d'alimentation de secours

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JP (1) JP3611039B2 (fr)
WO (1) WO2003032105A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014519217A (ja) * 2011-04-18 2014-08-07 コーニンクレッカ フィリップス エヌ ヴェ 信頼性が高い停止動作及び低制御電力を有する半導体スイッチ
WO2023162200A1 (fr) * 2022-02-28 2023-08-31 株式会社オートネットワーク技術研究所 Dispositif d'alimentation en courant de coupure embarqué

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000308335A (ja) * 1999-04-15 2000-11-02 Matsushita Electric Ind Co Ltd スイッチング電源
JP2000324808A (ja) * 1999-05-13 2000-11-24 Fuji Xerox Co Ltd 電源装置
JP2001196908A (ja) * 1999-10-28 2001-07-19 Harumi Suzuki 交流回路用半導体スイッチ回路

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000308335A (ja) * 1999-04-15 2000-11-02 Matsushita Electric Ind Co Ltd スイッチング電源
JP2000324808A (ja) * 1999-05-13 2000-11-24 Fuji Xerox Co Ltd 電源装置
JP2001196908A (ja) * 1999-10-28 2001-07-19 Harumi Suzuki 交流回路用半導体スイッチ回路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014519217A (ja) * 2011-04-18 2014-08-07 コーニンクレッカ フィリップス エヌ ヴェ 信頼性が高い停止動作及び低制御電力を有する半導体スイッチ
WO2023162200A1 (fr) * 2022-02-28 2023-08-31 株式会社オートネットワーク技術研究所 Dispositif d'alimentation en courant de coupure embarqué

Also Published As

Publication number Publication date
JPWO2003032105A1 (ja) 2005-01-27
JP3611039B2 (ja) 2005-01-19

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