TPS548B22: check if loop is stable

Given Ding

Genius 10115 points

Part Number: TPS548B22

Hi，

Please kindly help check if loop is stable.

TPS548B22. 330nH, Cout=2x 330uf ( ESR=6mohm)+ 2x 22uf ceramic caps, Iout=20A.

Thanks.

0 JohnTucker over 6 years ago

Given,

Let me get someone to look at this for you.

0 Henry Nguyen over 6 years ago

Hi Given,

Sorry delay. I typed to respond to your question yesterday but I guess I forgot to hit the post button.

This device is DCAP3 which has the internal ramp injection. So, it should be stable condition even with ceramic capacitor output.

Since there are POSCAP cap at the output, the device should even more stable.

Kit

0 Given Ding over 6 years ago in reply to Henry Nguyen

Hi Kit,

Thanks. I also try using simplis to simulate and it seems stable. Thanks.

BRs
Given

Power management forum