Part Number:BQ76952
BQ7695202 IC 充电和放电的驱动电压没有达到设置的电压 只有5V左右 ,设置的是11V模式,测量CP1对BAT脚的电压也只有5V左右,是电荷泵没有正常工作吗?另外02版本烧录之前转IIC取掉CRC烧录进程序,烧录完后如何转回CRC?
Operation with VBAT up to 80 V is supported when the charge pump is not in operation. Whenever the charge pump is in operation (in
5.5 V or 11 V mode), the maximum voltage on VBAT should be reduced to ensure the voltage on CP1, CHG, and DSG does not
exceed their maximum specified voltage.
Star Xu:
您好,请参考下面链接,希望对您有帮助。
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1013992/bq76952-issues-on-charge-pump-and-mosfet-switching
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yueqiang luo:
装上电池包后 MOS驱动电压是正常的 放置一晚上后 再去测量 MOS驱动电压就会下降到8.7V左右
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Star Xu:
您好,放置一晚上后 再去测量 MOS驱动电压就会下降到8.7V左右,请确认芯片是不是进入sleep mode