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DRV8305-Q1: Current sense output (SO) settling time upon power-up

Part Number: DRV8305-Q1


I'd like to know how much time does it take for the SO output to stabilize after the DRV8305N-Q1 is initially powered up, starting from when EN_GATE and PVDD go high (assuming they turn-on together)?


  • Alan,

    Could you explain the reasoning for needing this info?

    If the customer is trying to use the device very soon after power up, the datasheet recommends waiting 1ms after EN_GATE goes high to allow the charge pump and low side regulator to come up.

    On my setup I measured the CSA output coming up to 1.65V 1-2ms after PVDD reached 4.4V (min PVDD operating). I didn't see any appreciable settling time since we have our CSA output filtered.

    Other than this the datasheet does specify settling time per gain setting.