Chengdu Monolithic Power Systems Co., Ltd.

Li Lian

Yunping Lang

A current limit peak regulation circuit, a current limit circuit and a power converter including the current limit peak regulation circuit. The current limit peak regulation circuit provides a current limit threshold to limit a maximum allowable peak current value of a current flowing through a main switch of the power converter and adjusts the current limit threshold to decrease with decrease in a switching frequency of the power converter when the power converter is in a constant voltage mode so as to reduce power dissipation of the power converter in standby mode.

Current limit peak regulation circuit for power converter with low standby power dissipation

A light driver and the controller and the driving method thereof are disclosed. The controller has a reference generating circuit which has a dimming signal converting circuit, a thermal signal converting circuit and a selecting circuit. The dimming signal converting circuit converts a dimming signal into a converted dimming signal and the thermal signal converting circuit converts the thermal signal into a converted thermal signal. The selecting circuit selects the smaller one of the converted dimming signal and the converted thermal signal and outputs a reference signal based on the selected smaller signal.

Light driver and the controller and driving method thereof

A class D audio amplifier having: an audio control circuit configured to provide a switching signal based on an input signal and a reference signal; an input capacitor coupled between the input signal and the first input terminal of the audio control circuit; an inductor having a first terminal coupled to the switching terminal of the audio control circuit, and a second terminal; an output capacitor having a first terminal coupled to second terminal of the inductor and a second terminal coupled to a load; and a noise suppression circuit having a first terminal coupled to the first input terminal of the audio control circuit, and a second terminal coupled to the switching terminal of the audio control circuit, wherein the noise suppression circuit charges the input capacitor and the output capacitor to reach a preset value.

Growing community of inventors

Chengdu, China

Li Lian