Invention Grant
- Patent Title: Power factor correction boost converter and frequency switching modulation method thereof
- Patent Title (中): 功率因数校正升压转换器及其频率切换调制方法
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Application No.: US13241533Application Date: 2011-09-23
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Publication No.: US08878499B2Publication Date: 2014-11-04
- Inventor: Chih-Tai Chen , Yu-Ho Lin
- Applicant: Chih-Tai Chen , Yu-Ho Lin
- Applicant Address: CN Guangzhou TW Taipei
- Assignee: Lite-On Electronics (Guangzhou) Limited,Lite-On Technology Corporation
- Current Assignee: Lite-On Electronics (Guangzhou) Limited,Lite-On Technology Corporation
- Current Assignee Address: CN Guangzhou TW Taipei
- Agency: Li & Cai Intellectual Property (USA) Office
- Priority: CN201110074460 20110328
- Main IPC: G05F5/00
- IPC: G05F5/00 ; H02M1/42
Abstract:
The instant disclosure provides a Power Factor Correction (PFC) boost converter including a PFC converter unit and a control unit and a frequency switching modulation method thereof. The control unit outputs a pulse width modulation (PWM) signal to the PFC converter unit for adjusting an electronic power output to a voltage converter. As the output load of the PFC converter unit increases, the control unit increases the frequency of the PWM signal. Conversely, as the output load of the PFC converter unit decreases, the control unit reduces the frequency of the PWM signal. Consequently, the switching loss of the PFC converter unit is reduced.
Public/Granted literature
- US20120249091A1 POWER FACTOR CORRECTION BOOST CONVERTER AND FREQUENCY SWITCHING MODULATION METHOD THEREOF Public/Granted day:2012-10-04
Information query
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