Title:
SWITCHING POWER SUPPLY DEVICE, SWITCH CONTROL DEVICE, VEHICLE-MOUNTED APPARATUS, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/246302
Kind Code:
A1
Abstract:
This switching power supply device comprises: first and second switches that are connected in series between the applying terminal of an input voltage and the applying terminal of a voltage lower than the input voltage; and a control unit configured to control on/off of the first switch and the second switch. The control unit has: a first state in which the first switch is in an ON state and the second switch is in an OFF state; a second state in which the first switch is in the OFF state and the second switch is in the ON state after the first state; a third state in which the first switch and the second switch are in the OFF state after the second state; and a fourth state in which the voltage of a connection node between the first switch and the second switch is lowered compared to the third state after the third state. The control unit repeats, at a fixed period, the first state, the second state, the third state, and the fourth state.
Inventors:
HASHIGUCHI SHINGO (JP)
TAKOBE ISAO (JP)
SATO KOSUKE (JP)
YAMAGUCHI YUHEI (JP)
TAKOBE ISAO (JP)
SATO KOSUKE (JP)
YAMAGUCHI YUHEI (JP)
Application Number:
PCT/JP2021/020345
Publication Date:
December 09, 2021
Filing Date:
May 28, 2021
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M3/155
Foreign References:
| JP2004248374A | 2004-09-02 | |||
| JP2016032320A | 2016-03-07 | |||
| JP2002281743A | 2002-09-27 | |||
| US20140300329A1 | 2014-10-09 | |||
| US20070085520A1 | 2007-04-19 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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