TPS54202 as Fly-Buck?

Gabriele Clapier

Intellectual 1280 points

Other Parts Discussed in Thread: TPS54202

Hi,

can the TPS54202 be used as a flybuck converter?

In my case Vin=24V, Visolated = 3.3V Iout = 50mA

Kind regards

Gabriele

over 9 years ago

0 Abull Yang over 9 years ago

TI__Intellectual 1100 points

Gabriele,

TPS54202 can not support Fly-buck topology.

I sent you an Email for the details.

Abull

0 Chris Doughty over 8 years ago in reply to Abull Yang

Intellectual 295 points

Abull,

Would you mind posting your reasoning publicly or sending me the same explanation? I'm doing triage on a somebody else's design where this has been attempted.

Thanks!

0 Abull Yang over 8 years ago in reply to Chris Doughty

TI__Intellectual 1100 points

Chris,

At that time, we are thinking about the loop stability issue because of the internal compensation. And then, we did many experiments and found it was OK. But the output current can not be up to 2A. And, as your input is 24V and output voltage is 3.3V, So the Voltage stress to IC is 27.3V So you may need be careful for the layout to avoid the voltage spike.

Apologize for confusing you..

Abull

Power management

Power management forum

TPS54202 as Fly-Buck?