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

Julio Apps

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

over 7 years ago

0 Kevin LaRosa over 7 years ago

TI__Genius 17380 points

Hi Julio,

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

0 Krishnamurthy Hegde over 7 years ago in reply to Kevin LaRosa

TI__Expert 8730 points

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

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

Automotive (Read-Only)

Automotive Forum (Read-Only)

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