Invention Grant
- Patent Title: Power semiconductor drive circuit, power semiconductor circuit, and power module circuit device
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Application No.: US14877057Application Date: 2015-10-07
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Publication No.: US09729150B2Publication Date: 2017-08-08
- Inventor: Yuji Ishimatsu , Motohiro Ando
- Applicant: Rohm Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2014-208662 20141010
- Main IPC: H03B1/00
- IPC: H03B1/00 ; H03K19/00 ; H03K17/16

Abstract:
A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
Public/Granted literature
- US20160105175A1 POWER SEMICONDUCTOR DRIVE CIRCUIT, POWER SEMICONDUCTOR CIRCUIT, AND POWER MODULE CIRCUIT DEVICE Public/Granted day:2016-04-14
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