POWER SUPPLY CIRCUIT, DRIVER AND CONTROLLING METHOD

A power supply circuit, a driver and a controlling method. The power supply circuit includes: a transformer (T1), comprising a primary winding (P1) and a secondary winding (S1); a switch (Q1), configured to be in series connection with the primary winding of the transformer coupled between a first n...

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Bibliographic Details
Main Authors LIU, Shengwei, MAO, Qiuxiang
Format Patent
LanguageEnglish
French
German
Published 08.05.2024
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:A power supply circuit, a driver and a controlling method. The power supply circuit includes: a transformer (T1), comprising a primary winding (P1) and a secondary winding (S1); a switch (Q1), configured to be in series connection with the primary winding of the transformer coupled between a first node (A1) and a ground port; a sampling circuit, configured to be connected between the first node (A1) and the ground port, generate a sampled voltage of the first node (A1); and a controller, configured to receive the sampled voltage from a first pin (1 COM), and output a controlling signal from a second pin (6 DRAIN) to the switch, so as to control on/off state of the switch, the controlling signal is generated according to the sampled voltage and a sensed current corresponding to a current flowing through the switch.
Bibliography:Application Number: EP20210953084