TPS62872-Q1: I2C availability when EN=LOW

Yuya Shoji

Part Number: TPS62872-Q1

Hi team,

Is it possible to write VSET register via I2C when EN=LOW?

If yes, how long will it take to finish POR process from VIN goes to high? I'd like to know from when the I2C function gets available.

Best Regards,

Shoji

over 1 year ago

0 Tanvee over 1 year ago

TI__Genius 17261 points

Hi Shoji,

You can change the output voltage with I2C when EN is low. You need supply voltage on and generally it is once you complete the ramp up time for supply voltage.

Best regards,

Tanvee

0 Yuya Shoji over 1 year ago in reply to Tanvee

TI__Expert 5290 points

Hi Tanvee,

Do you mean I2C is available when V_IN goes over V_IT+? I believe there should be the time to wait for powering on process.

Best Regards,

Shoji

+1 Tanvee over 1 year ago in reply to Yuya Shoji

TI__Genius 17261 points

Hi Shoji,

You have to wait for device initialization and than I2C register can be read and write.

Best regards,

Tanvee

0 Yuya Shoji over 1 year ago in reply to Tanvee

TI__Expert 5290 points

Hi Tanvee,

Thank you for this information!

Best regards,

Shoji

Power management

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TPS62872-Q1: I2C availability when EN=LOW