Title:
SWITCH DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/120008
Kind Code:
A1
Abstract:
A switch drive device (40) drives switches (SWH, SWL) of upper and lower arms that are connected to each other in series. The switch drive device comprises: discharging units (70, 74, 75, 80, 84, 85) that each turn off an off-side switch by discharging charge from the gate of the off-side switch; determination units (70, 80) that each determine the on or off of the off-side switch; rapid discharging units (70, 76, 80, 86) that each set, when the determination unit determines that the off-side switch has been turned off, the discharging speed of a gate charge in the off-side switch higher than the discharging speed exhibited after the start of discharging charge from the gate of the off-side switch until the determination that the off-side switch has been turned off; and charging units (70, 72, 73, 80, 82, 83) that each turn on an on-side switch by charging the gate of the on-side switch with charge when the determination unit determines that the off-side switch has been turned off.
Inventors:
TOKUMASU AKIRA (JP)
Application Number:
PCT/JP2022/043257
Publication Date:
June 29, 2023
Filing Date:
November 23, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02M1/08; H02M1/38; H03K17/16; H03K17/695
Foreign References:
| JP2012084970A | 2012-04-26 | |||
| JP2007185024A | 2007-07-19 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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