Invention Grant
- Patent Title: Low cost high power factor LED driver
- Patent Title (中): 低成本高功率因数LED驱动器
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Application No.: US13088423Application Date: 2011-04-18
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Publication No.: US08477516B2Publication Date: 2013-07-02
- Inventor: Min-Chu Chien , Chin-Yen Lin
- Applicant: Min-Chu Chien , Chin-Yen Lin
- Applicant Address: TW Zhubei, Hsinchu County
- Assignee: Noveltek Semiconductor Corp.
- Current Assignee: Noveltek Semiconductor Corp.
- Current Assignee Address: TW Zhubei, Hsinchu County
- Agent Winston Hsu; Scott Margo
- Main IPC: H02M3/335
- IPC: H02M3/335
Abstract:
A controller for a power supply having a primary side and a secondary side includes a mapping circuit for generating a feedback signal corresponding to an output current of the secondary side, a power switch coupled to the primary side for conducting a connection according to a modulation signal, a constant current block, for generating a first current signal according to the feedback signal; and a control unit, for generating the modulation signal to control the power switch according to the first current signal.
Public/Granted literature
- US20120262961A1 Low cost high power factor LED driver Public/Granted day:2012-10-18
Information query
IPC分类:
