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3. Refer to ChargerStatus() (21/20h) register of the IC for potential hints.
For this specific case, InputVoltage Register is 0x1200 which gives an input voltage limit of 7808 mV. They need to lower it to below 5V for the IC to deliver power from the input. The DC offset is 3.2 V so they need to add 3.2 V to the register setting. Please refer to InputVoltage register description on page 62 of the datasheet for more info.
您好，请测量一下不能充电发生时电池和系统端的电压是多少。Just to confirm, you are saying that the customer plugs the adapter back in and BATFET Is not driven low (i.e. not closed) and so the battery is not charging? Have you collected a register dump when this occurs?
If the input voltage is briefly removed, it could trigger a VINDPM fault. This will show up in the status registers 0x20, 0x22. However, it is not shown in the above settings. Could you try unplugging and waiting a few seconds to see if any difference?
您好，Based on schematic it looks like this is 4S configuration. In 4S configuration the SYSOVP is set to 19.5V. Can you collect waveform on SW1/SW2/VBUS/VSYS upon adapter insertion to see what could be triggering SYS to exceed 19.5V? I don't see any issue in the schematic.
我读了一下寄存器应该是这个地方被置1了，但是怎么导致的没找到