BQ76952: CFETOFF&DFETOFF引脚控制

您好

https://www.ti.com.cn/cn/lit/an/zhcae26/zhcae26.pdf

? ? said:

我们在使用CFETOFF&DFETOFF引脚控制FET时发现当禁用FET时，FET的关断速度非常及时，但需要重新启用FET时，往往会有150ms的延迟，请问为何会出现这个延迟，是否能消除这个延迟？

请您参考上面链接，说明是存在延迟可以通过相关寄存器来缩短。

? ? said:

另外体二极管的保护时间最快可以达到多少ms/us？

There is not a way to modify the timing you describe. The body diode protection is decided by the firmware. There is a table showing the timing for many events in Table 6-9 of the TRM. The timing for this event is most likely on the 250 ms timer on which the conditions for the FET states are evaluated.