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专利名称：OVER VOLTAGE PROTECTION CIRCUIT AND
DRIVER CIRCUIT USING THE SAME
发明人：Chien-Feng LAI申请号：US13429349申请日：20120324
公开号：US20130155561A1公开日：20130620
专利附图：
摘要：An over voltage protection circuit, adapted for placing between a power pin of achip and a power terminal is provided. The over voltage protection circuit includes avoltage detection unit, a current limiting component, and a switch component. The
voltage detection unit is coupled between the power terminal and a ground, foroutputting a setting voltage according to the voltage level at the power terminal. Thecurrent limiting component is coupled between the power terminal and the power pin ofthe chip. The switch component is coupled between the power pin of the chip and theground, wherein the switch component is further coupled to the voltage detection unitand controlled by the setting voltage. When the voltage level at the power terminal ishigher than a first predetermined value, the switch component conducts to cut offvoltage received by the chip.
申请人：Chien-Feng LAI
地址：Hsinchu County TW
国籍：TW
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