Invention Grant
- Patent Title: Method of controlling a power factor correction converter and related closed-loop control system
- Patent Title (中): 控制功率因数校正转换器及相关闭环控制系统的方法
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Application No.: US14549211Application Date: 2014-11-20
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Publication No.: US09413225B2Publication Date: 2016-08-09
- Inventor: Claudia Castelli , Claudio Adragna
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Priority: ITMI2013A1998 20131129
- Main IPC: H02M1/42
- IPC: H02M1/42 ; H02M1/00

Abstract:
A method controls a power factor correction converter that includes a boost inductor and a switch. The method generates a sense signal representing a rectified AC input voltage or an inductor current through the boost inductor, turns on the switch in response to determining, based on the sense signal, a zero current condition through the boost inductor, turns off the switch after an on-time interval, generates a feedback signal based on an output voltage of the converter, and compares the feedback signal with a threshold. If the feedback signal is smaller than the threshold, the method generates a command signal, representing a phase domain including 0 and π, based on the feedback signal and the power threshold, and keeps the switch off when a phase of the input rectified AC voltage or of the inductor current is in the phase domain even if the zero current condition has been determined.
Public/Granted literature
- US20150155776A1 METHOD OF CONTROLLING A POWER FACTOR CORRECTION CONVERTER AND RELATED CLOSED-LOOP CONTROL SYSTEM Public/Granted day:2015-06-04
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