Title:
SWITCHING CONTROL CIRCUIT AND SWITCHING POWER SUPPLY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/084964
Kind Code:
A1
Abstract:
The purpose of the present invention is to generate an output voltage by switching from an input voltage applied to a series circuit of an inductor and a switching element. A control unit performs a PWM operation or a burst operation on the basis of a feedback voltage corresponding to the magnitude of a load. During the burst operation, switching is stopped and a turn-on instruction for the switching element is given on the basis of the feedback voltage, and, upon the value of a current (IP) flowing through the switching element exceeding a turn-off threshold value (IOFF), a turn-off instruction for the switching element is given. The turn-off threshold value is increased over time in a predetermined interval after the turn-on instruction.
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Inventors:
TAKIZAWA SHINJI (JP)
NATE SATORU (JP)
TANG YIFEI (JP)
CLEMENTE SHERWIN LEAL (JP)
NATE SATORU (JP)
TANG YIFEI (JP)
CLEMENTE SHERWIN LEAL (JP)
Application Number:
PCT/JP2020/035433
Publication Date:
May 06, 2021
Filing Date:
September 18, 2020
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H02M3/28
Foreign References:
| US20090284994A1 | 2009-11-19 | |||
| JP2018007515A | 2018-01-11 | |||
| JP2014117056A | 2014-06-26 | |||
| JP2008005567A | 2008-01-10 | |||
| US20120147630A1 | 2012-06-14 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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