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TPS65131: 关于VPOS和VNEG与OVP的逻辑关系

Part Number: TPS65131


规格书中关于系统OVP的逻辑描述的是反馈电压高于正常的5%,系统响应OVP。我的理解是反馈处分压的FBP&FBN电压异常,系统才响应OVP。是否正确?那么VPOS和VNEG的作用是什么(如何理解规格书中关于这两个引脚voltage-sense input的描述)?之前以为OVP是检测的VPOS,VNEG点电位。