JPS6457820A - Isolation drive circuit for power switching element - Google Patents

Isolation drive circuit for power switching element

Info

Publication number
JPS6457820A
JPS6457820A JP62214582A JP21458287A JPS6457820A JP S6457820 A JPS6457820 A JP S6457820A JP 62214582 A JP62214582 A JP 62214582A JP 21458287 A JP21458287 A JP 21458287A JP S6457820 A JPS6457820 A JP S6457820A
Authority
JP
Japan
Prior art keywords
signal
output
drive circuit
high frequency
command signal
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.)
Granted
Application number
JP62214582A
Other languages
Japanese (ja)
Other versions
JPH0549130B2 (en
Inventor
Kunihiko Karube
Toshihiro Nomura
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP62214582A priority Critical patent/JPS6457820A/en
Publication of JPS6457820A publication Critical patent/JPS6457820A/en
Publication of JPH0549130B2 publication Critical patent/JPH0549130B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H03K17/689—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
    • H03K17/691—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To obtain an inexpensive drive circuit with small size and high reliability by sending an on/off command signal through a high frequency signal so as to attain the transmission of a low frequency signal or a DC signal by a pulse transformer. CONSTITUTION:An output A of a high frequency power supply 1 is connected to one terminal of the primary winding of an isolation transformer 3 and an output C of an exclusive OR circuit 2 receiving an output A of a high frequency power supply 1 and an on/off command signal B is connected to the other terminal. A signal D being the difference between the signals A, C is obtained from the secondary winding of the transformer 3 as the output and the signal D is subject to full wave rectification by a full wave rectifier comprising diodes 4-7 and a drive signal E is given to a MOSFET 9. Thus, the on/off command signal is modulated by a high frequency and even if the on/off command signal is given a DC or a low frequency signal, the control signal is sent quickly and accurately and the isolation drive circuit with small size, low cost and high reliability is obtained.
JP62214582A 1987-08-27 1987-08-27 Isolation drive circuit for power switching element Granted JPS6457820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214582A JPS6457820A (en) 1987-08-27 1987-08-27 Isolation drive circuit for power switching element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214582A JPS6457820A (en) 1987-08-27 1987-08-27 Isolation drive circuit for power switching element

Publications (2)

Publication Number Publication Date
JPS6457820A true JPS6457820A (en) 1989-03-06
JPH0549130B2 JPH0549130B2 (en) 1993-07-23

Family

ID=16658105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214582A Granted JPS6457820A (en) 1987-08-27 1987-08-27 Isolation drive circuit for power switching element

Country Status (1)

Country Link
JP (1) JPS6457820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001069756A (en) * 1999-08-26 2001-03-16 Tdk Corp Switching power supply device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001069756A (en) * 1999-08-26 2001-03-16 Tdk Corp Switching power supply device

Also Published As

Publication number Publication date
JPH0549130B2 (en) 1993-07-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees