TPS61230A: 1.05-ms Soft Start

eto.chikara

Prodigy 40 points

Part Number: TPS61230A

Is "1.05-ms Soft Start" function only valid when Vin is added?

I enabled EN pin 2seconds after Vin is added,and "1.05-ms Soft Start" is not valid.

5 months ago

0 Travis Wang 5 months ago

TI__Intellectual 2705 points

Hi Chikara,

I'm sorry I didn't get what you meant by 'not valid'. Did Vout stay 0V when EN is enabled or the booting time is not 1.05ms.

Best Regards,

Travis

0 eto.chikara 5 months ago in reply to Travis Wang

Prodigy 40 points

Hi Travis,

Sorry for the confusing explanation.
I meant the booting time is not 1.05ms .

Vout rises to the specified value after about 300uS enabled EN .

Thanks & Best Regards

0 Travis Wang 5 months ago in reply to eto.chikara

TI__Intellectual 2705 points

Hi Chikara,

The datasheet Soft Start time (boost) means the rising time of the internal reference voltage during boost soft start phase. For boost soft start phase, please view datasheet P9.

The external Vout rising time is determined by Iout and Cout and is therefore hard to be given.

Best Regards,

Travis

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TPS61230A: 1.05-ms Soft Start