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1. 发明授权

US08754623B2 System and method for current limiting a DC-DC converter 有权
标题翻译：用于限流DC-DC转换器的系统和方法
公开(公告)号：US08754623B2
公开(公告)日：2014-06-17
申请号：US13687090
申请日：2012-11-28
申请人： Intersil Americas LLC
发明人： Congzhong Huang , Sicheng Chen , Xuelin Wu
IPC分类号： G05F1/44
CPC分类号： G05F1/46 , H02M1/15 , H02M1/32 , H02M3/1582
摘要： A DC-DC voltage converter has a pair of switching transistors to provide an output voltage and are alternately switched in a boost mode of operation responsive to control signals. An inductor is connected to the pair of switching transistor and has an inductor current flowing there through. A current sensor monitors an input current and generates a current sense signal responsive thereto. Control circuitry generates the control signals to the second pair of switching transistors responsive to the current sense signal, the output voltage and a current limit signal, wherein when the current limit signal indicates the inductor current exceeds a current limit the control signals configure the pair of switching transistors to decrease the inductor current.
摘要翻译： DC-DC电压转换器具有一对开关晶体管以提供输出电压，并且响应于控制信号而在升压操作模式中交替切换。电感器连接到该对开关晶体管，并且具有在其中流过的电感器电流。电流传感器监测输入电流并响应于此产生电流检测信号。响应于电流感测信号，输出电压和电流限制信号，控制电路产生对第二对开关晶体管的控制信号，其中当电流限制信号指示电感器电流超过电流限制时，控制信号配置一对开关晶体管降低电感电流。

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