Title:
STARTING METHOD AND DEVICE FOR SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2023/024051
Kind Code:
A1
Abstract:
A starting method and device for a switching power supply. When the switching power supply is started, the output power of a power circuit can be controlled to be gradually increased by gradually changing a control parameter from a first switching parameter to a second switching parameter, thereby reducing a rush current of the power circuit. In addition, according to the present application, only a feedback output value of a feedback circuit is calculated and stored when a difference value between an output parameter and a desired parameter of the power circuit is not within a preset range, and the operation of a switching tube in the power circuit is controlled on the basis of the feedback output value only when the difference value is within the preset range or the control parameter is changed to the second switching parameter, so that the output parameter is stabilized at the desired parameter, the situation that the feedback output value of the feedback circuit is large at the moment of switching the feedback circuit is avoided, and the generation of large surge current is avoided. Hence, the starting method in the present application can avoid rush on the switching power supply and improve the reliability and safety of the switching power supply.
Inventors:
LIU YANG (CN)
Application Number:
PCT/CN2021/114877
Publication Date:
March 02, 2023
Filing Date:
August 27, 2021
Export Citation:
Assignee:
INVENTRONICS HANGZHOU INC (CN)
International Classes:
H02M3/335; H02M1/36
Foreign References:
| CN203840204U | 2014-09-17 | |||
| CN1489272A | 2004-04-14 | |||
| CN104782033A | 2015-07-15 | |||
| CN109194142A | 2019-01-11 | |||
| US9960689B1 | 2018-05-01 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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