Part Number: TPS7A84A
我们的设计中VIN的输入时间会比Vbias晚,我想知道如果PG用VBIAS来上拉的话 会有什么问题吗?在EN未使能时,PG会一直保持为低吗?
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There is no issue if PG uses VBIAS to pullup, as long as VBias is guaranteed high whenever the device is properly regulating (the requirement for PG to be pulled high). Technically the TPS7A84A can operate without using the VBias rail so I thought I'd note it. PG will remain low when EN is not enabled as long as Vbias>=0.