FLYBACK POWER SUPPLY AND CHARGER

WIPO Patent Application WO/2023/207588

A1

Embodiments of the present application disclose a flyback power supply and a charger. The flyback power supply comprises: a primary control circuit, a secondary control circuit, a switch tube, a rectifier bridge, and a transformer. The rectifier bridge is connected to a first input end of the transformer, and the rectifier bridge is used for connection to an external power supply; a second input end of the transformer is connected to the switch tube, a first output end of the transformer is grounded, and a second output end of the transformer is connected to a first pin of the secondary control circuit; a first pin and a second pin of the primary control circuit are connected to the switch tube, and a third pin of the primary control circuit is connected to a second pin of the secondary control circuit by means of a first capacitor; and a third pin of the secondary control circuit is grounded. By using the embodiments of the present application, the dynamic response of the circuit can be improved, so that external devices and corresponding losses thereof are reduced, and the timeliness of primary and secondary disconnection protections is improved.

YANG CHENTAO (CN)
CHEN WEI (CN)

PCT/CN2023/087759

November 02, 2023

April 12, 2023

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SHENZHEN INJOINIC TECH CO LTD (CN)

H02M3/335; H02J7/10; H02M1/08

CN114553011A	2022-05-27
CN1599972A	2005-03-23
CN112311244A	2021-02-02
CN106411136A	2017-02-15
CN214014114U	2021-08-20
US20090109711A1	2009-04-30

SCIHEAD IP LAW FIRM (CN)

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