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BQ24610发热严重

Other Parts Discussed in Thread: BQ24610

各位好:附件为我的原理图、PCB和MOSFET选型手册以及电感手册,参数设置为:24V 输入,为单节锂电池充电,充电电流设置为1.5A左右(实际充电时为1A左右),问题一:每次充电,最高温度都达到85度,普遍都是七八十度左右,有点高;问题二:有些电路板的充电电压为3.8V,VFB引脚的输出电压为1.8V,可能是什么原因导致的?

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