根据TPS54620的spec,推荐的工作电压范围为4.5V-17V,而绝对的输入电压范围为-0.3-20V。 那是否可以采用4节锂电池(电池最大输出电压为16.8V)供电?
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用16.8V正常情况下是没问题,但是你要预防输入点样震荡的情况,避免震荡的高压击穿芯片,所以电池到Vin之间的引线要尽可能短,可以在输入端加个大电解