Invention Grant
US08063570B2 Simple protection circuit and adaptive frequency sweeping method for CCFL inverter
失效
CCFL逆变器简单保护电路和自适应扫频方法
- Patent Title: Simple protection circuit and adaptive frequency sweeping method for CCFL inverter
- Patent Title (中): CCFL逆变器简单保护电路和自适应扫频方法
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Application No.: US12166140Application Date: 2008-07-01
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Publication No.: US08063570B2Publication Date: 2011-11-22
- Inventor: Junming Zhang , Yuancheng Ren , Kaiwei Yao , Eric Yang
- Applicant: Junming Zhang , Yuancheng Ren , Kaiwei Yao , Eric Yang
- Applicant Address: US CA San Jose
- Assignee: Monolithic Power Systems, Inc.
- Current Assignee: Monolithic Power Systems, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Perkins Coie LLP
- Priority: CN200710193990 20071129
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B41/36
Abstract:
A CCFL inverter circuit integrates a feedback circuit and protection circuit together. For both in-phase and out-of-phase applications, sensed lamp voltages can be used for open lamp and short lamp detection and sensed currents can be used for open lamp detection. The driving circuit adjusts the open lamp frequency by using a duty cycle control signal so that the driving circuit can always achieve the desired lamp voltage gain.
Public/Granted literature
- US20090140655A1 SIMPLE PROTECTION CIRCUIT AND ADAPTIVE FREQUENCY SWEEPING METHOD FOR CCFL INVERTER Public/Granted day:2009-06-04
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