BQ25713: BQ25713RSNR开机有12.6V的凸起。目前没有电池，请问是否可以修改寄存器改为8.9V。 如果改为8.9V,后续加上3cell的电池是否会影响充电？

您好，修改电压后续给3串充电会有问题。建议您用评估板测试一下，看是否有突波。

请问如果没有电池，只是给后端负载供电的话。如何消除12.6V的电压凸起1s，是改硬件还是软件寄存器？

您好，正在询问更了解这款芯片的TI工程师，稍后回复。

您好，Is there any more information on what the 12.6 V bump is? Is the customer using the tip and barrel method to measure with?

您好，12.6V 1s和47.2A 4uS是同一个电路不同板子的现象吗？

同一个板子同一个电路。问题有两个，一个是19V输入的47.2A，一个是DCDC输出的12.6V凸起。

您好，12.6V凸起是哪个引脚，在哪里测量到的？

如下图所示的红圈位置测量到的。

您好，正在查询，稍后回复。

你的意思是：12.6V的凸起是因为AUTO_WAKEUP_EN打开了，所以默认以3串的电池电压12.6V进行预充电（128mA），半小时，然后关闭导致的对吗？我的疑问是没有电池为什么会有充电行为。另外12.6V的凸起时间也没有半小时，而是1S左右。这符合spec的说明吗？

您好，We would have to do more debugging to find out why. Do you know what the voltage of CELL_BATPRESZ is when this happens the voltage bump happens?

When this happens, The voltage of CELL_ BATPRESZ is 3.68V.

您好，CELL_ BATPRESZ determines the charge voltage and cell count.

With a voltage of 3.68, the charger thinks a battery is connected.

If the customer keeps having issues, you might be able to drive CELL_BATPRESZ to 0 V to stop the charging behavior.

But the machine is not equipped with batteries, and CELL_ BATPRESZ is not connected to other networks, only a 56k resistor is pulled up to the power supply VDDA. How can I make CELL_ BATPRESZ drives low.

I have a question. There is no battery installed, CELL_ Isn't BATPRESZ supposed to be low by default? You mean if there is no battery, CELL_ BATPRESZ needs to be grounded directly and not connected to VDDA, right? Because all the schematic diagrams on the Internet have batteries. Please send me the schematic diagram without battery for reference.