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BQ24259

Other Parts Discussed in Thread: BQ24259

在使用BQ24259时发现,单独用锂电给GPRS供电时,BQ24259会发生故障,具体现象是:GPRS只要一来大电流脉冲,就会使GPRS掉线,用电源适配器口供电,一切正常,同时观察锂电充电电流,已经不正常了,只有30多毫安,正常是接近500mA。(测试起初是正常的,是运行一段时间之后出现异常的),想了解一下是什么原因造芯片损坏。设计原理图如下: