Buck with Dying gasp

Anand Kumar Rai

Other Parts Discussed in Thread: TPS65250

Hi all!!

Can anyone please suggest a down converter with input of 12.0V and output of 5.0V, that must have dying gasp mode functionality. I referred TPS65250 but it has got three bucks, due to constraint in board size that doesn't allows to add lot of components. single output buck with gasp is needed.

Or is there any possibility to disable the other two bucks of TPS65250 and use single output in GASP Mode.

Thanks in advance!!!

Best Regards,

-Anand Kumar Rai

over 12 years ago

0 Gregory Watkins over 12 years ago

TI__Expert 4005 points

Two of the bucks can be disabled to operate the device as a single buck with dying gasp. I'd reccomend you disable bucks 1 & 2, just running buck 3.

0 Moses Morjain over 8 years ago in reply to Gregory Watkins

TI__Intellectual 1685 points

Have we created a single buck converter with dying gasp? Or is TPS65250 with 2 disabled bucks the only option?

0 Richard Solarski over 8 years ago in reply to Moses Morjain

TI__Genius 10885 points

Not that I know of, even this reference design utilizes three separate ICs:
www.ti.com/.../tida-00304

Maybe the members of the non-isolated DC/DC forum will know of a single buck IC that contains a similar feature:
e2e.ti.com/.../

Power management

Power management forum

Buck with Dying gasp