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TPS54561-Q1: TPS54561 inverting 电路设计问题

Part Number: TPS54561-Q1

请教一下,TPS54561-Q1在设计inverting电路时,它的Thermal pad是接GND还是接输出,SLVA317中datasheet并未提到这一点

另外常温测试负载在3A时IC温度大概有110℃,正常吗?

  • HI

        Powerpad在inverting电路时是连接到负压的,而不是0V GND.  

        芯片温度过高,首先需要确认Powerpad是否充分和PCB 铜箔充分焊接,并扩展散热(最好是四层板)。

        110℃是偏高的,要看散热设计是否良好?