Invention Grant
- Patent Title: Integrated circuit for driving high-voltage LED lamp
- Patent Title (中): 用于驱动高压LED灯的集成电路
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Application No.: US12877157Application Date: 2010-09-08
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Publication No.: US08305005B2Publication Date: 2012-11-06
- Inventor: Wei-Chen Fu , Wei-Chen Liang , Wen-Cen Li , Bo-Wen Hou , Ching-Sung Lo
- Applicant: Wei-Chen Fu , Wei-Chen Liang , Wen-Cen Li , Bo-Wen Hou , Ching-Sung Lo
- Applicant Address: TW Hsinchu
- Assignee: Integrated Crystal Technology Inc.
- Current Assignee: Integrated Crystal Technology Inc.
- Current Assignee Address: TW Hsinchu
- Agency: HDLS IPR Services
- Agent Chun-Ming Shih
- Main IPC: H05B41/16
- IPC: H05B41/16

Abstract:
An integrated circuit for driving high-voltage LED lamps is applied to a rectified alternative current (AC) power and a plurality of LED stacks. The integrated circuit includes a control unit, a plurality of current-clamping units which electrically connect to the control unit and the LED stacks respectively, and a plurality of current-sensing units which electrically connect to the current-clamping units and the control unit. When the rectified power is switched on, the current-sensing unit constantly monitors the electrical current flowing through the respective current-clamping unit and feeds back the monitored data to the control unit. The control unit sequentially switches on or off the current-clamping units according to the combinatorial logic state of the monitored data.
Public/Granted literature
- US20120056559A1 INTEGRATED CIRCUIT FOR DRIVING HIGH-VOLTAGE LED LAMP Public/Granted day:2012-03-08
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