Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
Control integrated circuit of a switch power supply and a switch power supply using the same
A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.
BYD Company Limited Shenzhen BYD Auto R&D Company Limited
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Chuntian Wenqing Xiaohua Yuming
Yu Wang Yang Feng