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TPS23880的PSE通道是独立的吗

Other Parts Discussed in Thread: TPS23880

您好:

TPS23880的PSE通道是独立的?我用TPS23880做了4路的BT,第一路BT带70W   第二路BT带30W就带不起来,第三路BT和第四路BT都是悬空的,没接,不知道是怎么回事