RECTIFIER DIODE REPLACEMENT CIRCUIT AND REVERSE BIAS CUT-OFF DRIVE CIRCUIT

WIPO Patent Application WO/2018/036041

A1

A rectifier diode replacement circuit having reverse bias cut-off drive, comprising a rectifier diode circuit and a reverse bias cut-off drive circuit (6). The reverse bias cut-off drive circuit detects voltages at both ends (A, K) of the rectifier diode circuit. When a cathode potential is greater than an anode potential, the reverse bias cut-off drive circuit forms a rapid charge discharge channel at a gate of a power MOS transistor (Q) to cut off the power MOS transistor, or the reverse bias cut-off drive circuit forms a rapid charge discharge channel at both ends of an energy storage capacitor (C) so that the energy storage capacitor discharges by means of the reverse bias cut-off drive circuit, and when the voltages at both ends of the energy storage capacitor are lower than an output voltage of a bandgap reference circuit (3) in the rectifier diode circuit, a hysteresis comparator (4) outputs an off signal to be amplified by a drive amplifier (5) to cut off the power MOS transistor. According to the reverse bias cut-off drive circuit, the rectifier diode circuit can be converted from a forward bias to a reverse bias, and then is rapidly cut off.

ZHANG ZHENRONG (CN)
FAN LIN (CN)
WANG LU (CN)
LIU YONGGUANG (CN)
YU JINCHUAN (CN)
HE XUDONG (CN)
WAN TIANCAI (CN)
XU HUA (CN)

PCT/CN2016/111191

March 01, 2018

December 21, 2016

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CHONGQING SOUTHWEST INTEGRATED CIRCUIT DESIGN CO LTD (CN)

H02M7/217; H02M1/08; H03K17/04

CN102904421A	2013-01-30
CN200976577Y	2007-11-14
CN104953859A	2015-09-30
JP2005198375A	2005-07-21
JPH08317656A	1996-11-29

See also references of EP 3416277A4
None

CHONGQING FRONTIER PATENT ATTORNEY OFFICE(GENERAL PARTNER) (CN)

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