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LM5175在调试时发现温度过高，现象如下所示，请帮忙看下并是否有好的解决办法，谢谢！
产品指标：20~28V输入，输出12~48V可调，功率150W
测试现象：24V输入，48V输出，空载上电2分钟后电感温度可达80℃，MOS温度也会达到75℃。3A输出时温度更高
空载时波形
24V IN 48V 3A OUT负载的波形
原理图
Ch1是HDRV2，Ch2是LDRV2.工作是正常的，降压输出时性能及温度都基本能满足要求，升压时温度就会比较高，且输出电压越高温度也会越高。
