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TPS65311-Q1: TPS65311-Q1 Power Resources Sequencing using IC SPI Interface

Part Number: TPS65311-Q1

 I see that the device has registers to enable BUCK2,BUCK3,BOOST and the LDO. I am wondering if it’s feasible to keep the previously mentioned rails disabled when VBAT is applied to the single output buck controller  and than enable the other rails one by one through the SPI interface?

Thank you,

Julio Sanchez

  • Hi Julio,

    I've moved this post to the Automotive forum for now to help ensure that the experts can help you.

    Thank you,
    Kevin LaRosa
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    For more information on Multi-Channel Power Management ICs:
     

  • In reply to Kevin LaRosa:

    Hi Julio,

    This device has fixed start up sequence and power sequencing cannot be done via SPI. If they need the power sequencing, external load switches are needed.

    Regards,

    Murthy

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