TPS54561输入20v,输出4.6v,电流约2A,工作一小时后实测电感温度接近80℃,TPS54561和PDS760大约有60~70℃,这个温度正常吗?
我这边尝试将开关频率降到400KHz,但是温度下降的不明显,请教一下有什么办法可以有效降低电感的发热,选型上注意什么?原理图如下图
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