TPS54917: Review Circuit

Julian Chen

Expert 2550 points

Part Number: TPS54917

Hi E2E,

Could you kindly reveiw this circuit and check the compasention circuit?

Thanks!

over 5 years ago

0 JohnTucker over 5 years ago

TI__Guru**** 191445 points

Julian,

Did you use the method from the document I referenced earlier? I see you are using mixed output capacitors. Is that necessary? Generally, that makes the compensation design more difficult. Please provide your design equations for the compensation and I will check them.

0 JohnTucker over 5 years ago in reply to JohnTucker

TI__Guru**** 191445 points

Julian,

While the circuit appears stable as is, the crossover frequency is pretty low. I would consider:

R1765 = 8.06k

C2353 = 820 pF

C2348 = 33 pF

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TPS54917: Review Circuit