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METHOD AND APPARATUS FOR FAULT DETECTION SCHEME FOR COLD CATHODE FLORESCENT LAMP (CCFL) INTEGRATED CIRCUITS
METHOD AND APPARATUS FOR FAULT DETECTION SCHEME FOR COLD CATHODE FLORESCENT LAMP (CCFL) INTEGRATED CIRCUITS
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机译:冷阴极荧光灯(CCFL)集成电路故障检测方案的方法和装置
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摘要
A fault detection circuit and a short-circuit detection circuit for a Cold Cathode Fluorescent Lamp (CCFL) driver integrated circuit having a power bridge and a CCFL load are disclosed that includes a reference circuit operable to generate a reference current in response to an external component, a replica component having a dimension substantially less than the components of the power bridge, a multiplexer circuit, and a comparator circuit. The replica component and the multiplexer circuit pass the reference current and the replica current to the comparator circuit respectively.
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