Invention Grant
- Patent Title: Multi-mode PFC control and control method thereof
- Patent Title (中): 多模PFC控制及其控制方法
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Application No.: US14222451Application Date: 2014-03-21
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Publication No.: US09479046B2Publication Date: 2016-10-25
- Inventor: Sicong Lin , Yiqing Jin , Yuancheng Ren , Junming Zhang
- Applicant: Chengdu Monolithic Power Systems Co., Ltd.
- Applicant Address: CN Chengdu
- Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
- Current Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
- Current Assignee Address: CN Chengdu
- Priority: CN201310091524 20130321
- Main IPC: H02M1/42
- IPC: H02M1/42 ; H02M1/40
Abstract:
A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off time control circuit; a second off time control circuit; and a logic circuit selectively controls the power switch working under CCM or DCM; when working under CCM, the first off time control circuit controls an off time period of the power switch and when working under DCM, the second off time control circuit controls the off time period of the power switch.
Public/Granted literature
- US20140285163A1 HIGHLY EFFICIENT PFC CIRCUIT AND CONTROL METHOD THEREOF Public/Granted day:2014-09-25
Information query
