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?
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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?