Title:
SWITCHING POWER SUPPLY AND CONTROL METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2024/014201
Kind Code:
A1
Abstract:
A power circuit 110 includes a switching element M1. A feedback circuit 120 generates an error signal VERR according to an error between an output detection signal VDET indicating the output signal VOUT of the power circuit 110 and a reference signal VREF. A converter controller 130 generates a drive pulse VDRV having a duty cycle according to the error signal VERR, and drives the switching element M1 in accordance with the drive pulse VDRV. A pulse current generator 140 generates a soft start pulse current IPS and supplies the soft start pulse current IPS to a soft start capacitor CSS. A clamp circuit 150 clamps the error signal VERR at a clamp level VCL corresponding to the voltage VSS generated in the soft start capacitor CSS.
Inventors:
HORII KAZUHIRO (JP)
Application Number:
PCT/JP2023/021404
Publication Date:
January 18, 2024
Filing Date:
June 08, 2023
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M3/155
Foreign References:
| JP2013005514A | 2013-01-07 | |||
| JP2009022075A | 2009-01-29 | |||
| JP2005033864A | 2005-02-03 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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