JPS6477220A - Driving circuit for mos-fet - Google Patents

Driving circuit for mos-fet

Info

Publication number
JPS6477220A
JPS6477220A JP62235320A JP23532087A JPS6477220A JP S6477220 A JPS6477220 A JP S6477220A JP 62235320 A JP62235320 A JP 62235320A JP 23532087 A JP23532087 A JP 23532087A JP S6477220 A JPS6477220 A JP S6477220A
Authority
JP
Japan
Prior art keywords
fet
condenser
power source
turned
mos
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP62235320A
Other languages
Japanese (ja)
Inventor
Mitsuharu Tabata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62235320A priority Critical patent/JPS6477220A/en
Publication of JPS6477220A publication Critical patent/JPS6477220A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To simplify a power supply circuit by charging a condenser by a power source at the time of turning-off of a MOS-FET and driving a control means by the terminal voltage without discharging the condenser by a diode between the power source and the accumulator. CONSTITUTION:A power source 6 and a load 5 are connected to MOS-FETs 1-4 constituting a bridge. Driving circuits 211 and 212 are connected to gates of FETs 1 and 3, and driving circuits 221 and 222 are connected to gates of FETs 2 and 4. When the FET 1 is turned off, a condenser 26 is charged through a diode 23, a resistance 24, and a transistor TR 25 by the power source 6, and a non-inverting amplification stage 71 and a photocoupler 111 as the control means of the driving circuit are operated by this electric charge of the condenser to keep the FET 1 turned off. When a current ie of an input IN1 is cut off and a current ie' flows to an input IN2, the FET 1 is turned on and the FET 2 is turned off, and charging of the condenser is stopped. Thus, the required power source is simplified to reduce cost.
JP62235320A 1987-09-17 1987-09-17 Driving circuit for mos-fet Pending JPS6477220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62235320A JPS6477220A (en) 1987-09-17 1987-09-17 Driving circuit for mos-fet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62235320A JPS6477220A (en) 1987-09-17 1987-09-17 Driving circuit for mos-fet

Publications (1)

Publication Number Publication Date
JPS6477220A true JPS6477220A (en) 1989-03-23

Family

ID=16984360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62235320A Pending JPS6477220A (en) 1987-09-17 1987-09-17 Driving circuit for mos-fet

Country Status (1)

Country Link
JP (1) JPS6477220A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03206710A (en) * 1990-01-08 1991-09-10 Fuji Electric Co Ltd Optically driven semiconductor device
JPH04363909A (en) * 1991-06-10 1992-12-16 Shibaura Eng Works Co Ltd Controller for switching element and device using it
US5475333A (en) * 1991-05-10 1995-12-12 Fuji Electric Co., Ltd. Built-in drive power-source semiconductor device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03206710A (en) * 1990-01-08 1991-09-10 Fuji Electric Co Ltd Optically driven semiconductor device
US5475333A (en) * 1991-05-10 1995-12-12 Fuji Electric Co., Ltd. Built-in drive power-source semiconductor device
JPH04363909A (en) * 1991-06-10 1992-12-16 Shibaura Eng Works Co Ltd Controller for switching element and device using it

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