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BQ40Z80: bq40z80放电异常,且无法恢复

Part Number: BQ40Z80

您好,目前我们正在开发一款200HZ-6GHz频率发生装置的电池保护板,使用的bq40z80,在测试低频900Mhz时发生断电现象,同时无法恢复、读取不到数据,重新上电无反应,测量引脚无短路现象,bq40z80芯片引脚没有烧坏痕迹,更换bq40z80芯片恢复正常,请问是否是emc导致的,我们需要做哪些处理从而保护芯片?