Haynes and Boone, LLP
Boot strap capacitor charging for switching power converters
A first charging path is provided for the charging of an a bootstrap capacitor that stores a driver power supply voltage for driving an active clamp switch transistor in a flyback converter. The first charging path couples charge from an active clamp capacitor to charge the bootstrap capacitor. A power supply capacitor stores a power supply voltage for a controller of a power switch for the flyback converter. A second charging path couples charge from the power supply capacitor to charge the bootstrap capacitor.
DIALOG SEMICONDUCTOR INC.
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Wenduo Cong
Liu Zheng