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BQ25758: USB PD 28V 調壓問題點

Part Number: BQ25758

目前使用BQ25758做USB PD EPR 28V 輸出時,發生調壓到28V後約600ms左右會自動降壓到20V左右。降壓20V的操作並未有任何的I2C輸出。想請問要如何解決此問題點。

協議IC搭配 BQ25758 EVM 進行調適。