BQ24616充电故障!求解答!急!
时间:10-02
整理:3721RD
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使用BQ24616对7.4锂电池进行充电,发现不能正常充电。充电指示灯闪烁。
同时测试发现,高边NMOS的驱动引脚有PWM,低边NMOS的驱动引脚没有PWM。
求大神解惑!
Hi
检查一下焊接,包括低边驱动以及sense电路。
If the SRP-SRN voltage decreases below 5 mV (the charger is also forced into nonsynchronous mode when the average SRP-SRN voltage is lower than 1.25 mV), the low-side FET is turned off for the remainder of the switching cycle to prevent negative inductor current。
谢谢!已解决!是SPR-SRN采样信号穿层,被其他信号干扰!