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TPS629210: 目前测试负载电流变大,转换效率变小,帮忙分析下是哪里出现问题?

Part Number: TPS629210

测试的结果

原理图

PCBlayout也是严格按照规格书中建议做的。

所以,帮忙分析下为什么会出现这样的结果?