Upl Semiconductor Corp.

Cheng-Hsing Li

Yi-Xian Jan

Yen Hui Wang

Kuo-Jen Kuo

Chao-Chung Huang

Chien Hsien Tsai

A controller of a buck-boost conversion circuit and a mode switching method thereof are provided. The controller control operations of multiple switches of the buck-boost conversion circuit to convert an input voltage into an output voltage and provide an output current. The controller includes a slope compensation circuit, a control loop, and a mode switching circuit. The slope compensation circuit generates a slope compensation signal according to a mode switching signal of a current cycle. The control loop is coupled to the slope compensation circuit and the switches respectively, and is configured to generate multiple switch control signals according to the slope compensation signal, a feedback voltage related to the output voltage, and a current sense signal related to the output current to control the operations of the switches respectively. The mode switching circuit is coupled to the slope compensation circuit and the control loop. The mode switching circuit generates the mode switching signal of a next cycle according to the slope compensation signal and at least one of the switch control signals to control an operation mode of the buck-boost conversion circuit.

Growing community of inventors

Hsinchu County, Taiwan

Cheng-Hsing Li