你好,目前采用AM3352和TPS65217做了一个核心板,奇怪的是用如果用开关电源ITECH牌子的IT6720无法启动TPS65217,也就是开关电源IT6720直接输出5V给TPS65217,TPS65217没有任何输出,如果采用电源适配器供电,TPS65217就正常,我这个IT6720电源是好的,而且验证了,不知道为什么,其他电源芯片都有输出,就TPS65217没有
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