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求助tps54560

Other Parts Discussed in Thread: TPS54560, UC3907, TPS53318, TPS54821

大侠好:

       电路使用标称16v的电池供电,采用tps54560将电压降至12V,并提供5A的直流工作电流。现实验发现,输出电流为3.5A时,一段时间后TPS54560很烫,该芯片会停止工作,输出电压和电流为0,应该是散热没有设计好。现考虑能否用两个含tps54560的电路共地并联使用,提供12V,5A的工作电流,两个电路会不会有回流什么的,特向大侠请教!!!

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