TPS568230: Question about TPS51396

Peter Han1

Intellectual 1020 points

Part Number: TPS568230
Other Parts Discussed in Thread: TPS51396

Team,

my customer using TPS51396 for 4V(5A) and 3V(4A) circuit like below.

Key questions : Is there have any method to simulation phase margin of TPS51396?

question : could you help to get phase margin simulation results ?

over 5 years ago

0 JohnTucker over 5 years ago

TI__Guru**** 191445 points

Peter,

TPS51396 uses DCAP3 control. There are not any simulation models available for frequency domain simulations.

0 Yuchang Zhang over 5 years ago in reply to JohnTucker

TI__Mastermind 18510 points

Peter,

Based on Jonh's comment, I found the SS cap is a little bigger, please refer to formula 2 and Fig22 reference schematic to change it. and also suggest to add one more 22uf for backup, just not stuff it.

Yuchang

Power management

Power management forum

TPS568230: Question about TPS51396