Title:
CONTROL METHOD FOR SWITCHING POWER SUPPLY AND SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2023/051520
Kind Code:
A1
Abstract:
Embodiments of the present application disclose a control method for a switching power supply and a switching power supply. The control method comprises: after a switching power supply is started, a control module acquiring a voltage waveform of a connection point between a first switch tube and a filter inductor; when the voltage waveform of the connection point does not achieve zero-voltage switching, the control module adjusting a cut-off current of a second switch tube until the voltage waveform of the connection point just returns to high; when the voltage waveform of the connection point just returns to high, the control module controlling the first switch tube to be turned on, so as to achieve the zero-voltage turn-on of the first switch tube.
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Inventors:
GU DIEFEN (CN)
Application Number:
PCT/CN2022/121692
Publication Date:
April 06, 2023
Filing Date:
September 27, 2022
Export Citation:
Assignee:
MIPTECH LTD (CN)
International Classes:
H02M1/08; H02M1/44; H02M3/158
Foreign References:
| CN113890314A | 2022-01-04 | |||
| CN112134443A | 2020-12-25 | |||
| CN106787719A | 2017-05-31 | |||
| CN108390567A | 2018-08-10 | |||
| CN107026568A | 2017-08-08 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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