Title:
SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/190208
Kind Code:
A1
Abstract:
A switching power supply device 100 has a main circuit 110 that includes: a switching element Q1; and a rectifying element D1 that conducts in a complementary manner with the switching element Q1. A snubber capacitor C2 and a snubber diode D2 are provided in series on a path parallel to rectifying element D1. A snubber switch element SW2 is connected in parallel with snubber diode D2. A control circuit 200 controls the switching element Q1 and the snubber switch element SW2. The control circuit 200 turns ON the snubber switch element SW2, prior to turning ON the switching element Q1, and turns OFF the snubber switch element SW2 at the same time as, or prior to, turning OFF the switching element Q1.
Inventors:
HORII KAZUHIRO (JP)
KATO RYO (JP)
KATO RYO (JP)
Application Number:
PCT/JP2023/011938
Publication Date:
October 05, 2023
Filing Date:
March 24, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M3/155; H02M3/28
Foreign References:
| JP2002051564A | 2002-02-15 | |||
| JP2002044946A | 2002-02-08 | |||
| JP2017079511A | 2017-04-27 | |||
| JP2015186363A | 2015-10-22 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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