PFC circuit with auxiliary switch tube and control method thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11843314
APP PUB NO 20220255422A1
SERIAL NO

17583273

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Abstract

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A PFC circuit includes: a boost inductor, an auxiliary winding, an auxiliary switch tube, a main switch tube, a clamping capacitor, a series resistor and a control module; the boost inductor and the auxiliary winding have mutual inductance, a first terminal of the auxiliary winding is connected to a first terminal of the auxiliary switch tube, a second terminal of the auxiliary switch tube is connected to a first terminal of the clamping capacitor, a second terminal of the clamping capacitor is connected to a first terminal of the series resistor, and a second terminal of the series resistor is connected to a second terminal of the auxiliary winding; the main switch tube is connected between the boost inductor and the ground; and the control module is respectively connected to a control terminal of the main switch tube and a control terminal of the auxiliary switch tube.

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Patent Owner(s)

Patent OwnerAddress
HUAYUAN SEMICONDUCTOR (SHENZHEN) LIMITED COMPANYB502 YUANZHENG CHUANGYE BLDG 19 LANGSHAN RD NANSHAN DISTRICT SHENZHEN 518057

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Chunming Shenzhen, CN 3 47
Hu, Peng Shenzhen, CN 83 380
Li, Linkai Shenzhen, CN 6 7

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