DC-DC Input and Output Capacitor value

MENGKEONG FONG

Prodigy 230 points

Other Parts Discussed in Thread: TPS56628

Dear Sir,

I'm using TPS56628 IC

Nowaday DC-DC Input and Output Capacitor value

We can just follow reference schematics recommend value or Webench calculate value for design

or still need put big cap for it to get more stable power and lower noise power?

Thanks

over 9 years ago

0 Nick Chen over 9 years ago

TI__Prodigy 575 points

HI,

TPS56628 is DCAP2 mode, and some of the benefits are that it has good transient response, and it does not rely on output cap ESR value, so just follow reference schematic and recommended values from EVM or datasheet. no need for extra big cap.

0 MENGKEONG FONG over 9 years ago in reply to Nick Chen

Prodigy 230 points

How about low frequency performance fo the IC Vout add put LC filter ..with E-CAP will be better?

Power management

Power management forum

DC-DC Input and Output Capacitor value