Title:
SWITCH DRIVE DEVICE AND INVERTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/047991
Kind Code:
A1
Abstract:
A switch drive device 100 comprises: an upper driver 110H that switches an upper switch of a power circuit 200 on/off by receiving input of an upper control signal HS and outputting a upper drive signal HG; a lower driver 110L that switches a lower switch of the power circuit 200 on/off by receiving input of a lower control signal LS and outputting a lower drive signal LG; a first detection circuit 120L that detects falling of a switch voltage which appears at a connection node between the upper switch and the lower switch after the upper control signal HS has been switched to an off logic level (for example, a low level) and that generates a first detection signal S16; and a first control circuit 130L that switches the lower control signal LS to an on logic level (for example, a high level) after at least a first delay time has elapsed, using the first detection signal S16 as a trigger.
Inventors:
NINOMIYA SANEI (JP)
SUGIMOTO SAE (JP)
SUGIMOTO SAE (JP)
Application Number:
PCT/JP2023/020984
Publication Date:
March 07, 2024
Filing Date:
June 06, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M1/38; H02M1/08; H02M7/48; H03K17/16; H03K17/687
Domestic Patent References:
| WO2018116458A1 | 2018-06-28 |
Foreign References:
| JP2005217774A | 2005-08-11 | |||
| JP2002204581A | 2002-07-19 | |||
| US20190319617A1 | 2019-10-17 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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