Controller applied to an llc resonant power converter

Abstract

A controler applied to an LLC resonant power converter includes a threshold voltage generation circuit and a gate control signal generation circuit. The threshold voltage generation circuit is used for generating an upper threshold voltage and a lower threshold voltage according to a reference voltage, a feedback voltage, and a gate control signal phase. The gate control signal generation circuit is used for disabling an upper bridge control signal according to a sensing voltage and the upper threshold voltage or disabling an lower bridge control signal according to the sensing voltage and the lower threshold voltage, wherein an upper bridge switch of the LLC resonant power converter is turned on according to the upper bridge control signal, and an lower bridge switch of the LLC resonant power converter is turned on according to the lower bridge control signal.

Dependencies are inferred from the claim text.