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BQ24610 发烫

Other Parts Discussed in Thread: BQ24610

用如下原理图做的一个充电板,充电电压12.6V 电流5A  输入电压24V ,充电时,BQ24610 和Q1 Q2 Q3 Q4 都比较烫,手指放在上面几秒种就要松开,这发烫主要是由哪些原因引起的