Title:
DRIVE CIRCUIT FOR SWITCH
Document Type and Number:
WIPO Patent Application WO/2020/250908
Kind Code:
A1
Abstract:
A drive circuit (50H, 50L) divides a terminal-to-terminal voltage across a switch (SWH, SWL). The drive circuit is provided with a differential circuit unit (60, 100) having first and second input terminals to which divided terminal-to-terminal voltages are input, wherein the differential circuit unit (60, 100) outputs an analog voltage corresponding to a voltage difference between the first and second input terminals. The differential circuit unit is capable of implementing a reset of an output voltage thereof, and outputs an analog voltage obtained by multiplying an amount of change from a reference voltage by an amplification factor, the reference voltage corresponding to a voltage difference between the first and second input terminals when a reset is implemented and then removed. The drive circuit outputs a binary signal corresponding to a result of comparison between the analog voltage output from the differential circuit unit and a threshold value, and, on the basis of the output signal, sets a rate of movement of a gate charge of the switch when a drive state is switched.
Inventors:
NAKAMURA YUUTA (JP)
AOKI YASUAKI (JP)
YOSHIDA HIDEJI (JP)
YOSHIYA TAKASHI (JP)
NEZUKA TOMOHIRO (JP)
NIWA AKIMASA (JP)
AOKI YASUAKI (JP)
YOSHIDA HIDEJI (JP)
YOSHIYA TAKASHI (JP)
NEZUKA TOMOHIRO (JP)
NIWA AKIMASA (JP)
Application Number:
PCT/JP2020/022754
Publication Date:
December 17, 2020
Filing Date:
June 09, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02M1/08; H03K17/16; H03K17/695
Foreign References:
| JP2018153007A | 2018-09-27 | |||
| JP2008232735A | 2008-10-02 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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