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TPS40403是如何检测低侧FET电流的，以触发过流保护的？
你好,TI没有这颗芯片呀,是TPS40303么, 他是通过连接在LDRV管脚的电阻来定OCP的阈值电压, 然后通过监测SW和GND的电压来判断是否OC
