Other Parts Discussed in Thread: TPS2553,
Hello,
BMC_UAB_VBUS_EN_N and V_5V_AUX is connected to MB supply voltage. BMC_FRONT_USB_PWR is connected to PC with USB cable. While remove MB supply voltage and connect to PC with USB cable, the chip is power down ideally due to V_5V_AUX is removed. But we found BMC_FRONT_USB_PWR will supply 5V to V_5V_AUX as below waveform. That shows power path is turned on by BMC_FRONT_USB_PWR.
Do we have any comments for it? Or we need set VIN and EN power sequence to avoid this issue? Thank you.
BR
Patrick
