Invention Grant
US08305051B2 AC-DC switching power converters with frequency variation in response to load changes
有权
AC-DC开关电源转换器响应负载变化而频率变化
- Patent Title: AC-DC switching power converters with frequency variation in response to load changes
- Patent Title (中): AC-DC开关电源转换器响应负载变化而频率变化
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Application No.: US12569992Application Date: 2009-09-30
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Publication No.: US08305051B2Publication Date: 2012-11-06
- Inventor: Vijay G. Phadke , Gordon Currie , Arlaindo V. Asuncion , Israel Beltran , Melvin Co
- Applicant: Vijay G. Phadke , Gordon Currie , Arlaindo V. Asuncion , Israel Beltran , Melvin Co
- Applicant Address: HK Kwun Tong, Kowloon
- Assignee: Astec International Limited
- Current Assignee: Astec International Limited
- Current Assignee Address: HK Kwun Tong, Kowloon
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: G05F1/00
- IPC: G05F1/00
Abstract:
A method of operating a switching power converter having at least one power switch controlled by a drive signal having a switching frequency is disclosed. The method includes monitoring an output power of the switching power converter, determining whether the output power has decreased below a threshold level and, in response to the output power decreasing below the threshold level, changing the switching frequency of the drive signal from a first switching frequency to a second switching frequency when an operating condition of the switching power converter is satisfied. Also disclosed are controllers and switching power converters (including PFC converters).
Public/Granted literature
- US20110075458A1 AC-DC Switching Power Converters With Frequency Variation in Response to Load Changes Public/Granted day:2011-03-31
Information query
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