TPS92691: Feedback Compensation for SEPIC

user3942675

Prodigy 240 points

Part Number: TPS92691

Dear Sirs,

I would like to design SEPIC converter with the TPS92691.

However I don't know how I should design the feedback compensation.

Can SEPIC converter be regard as a back-boost converter about a feedback compensation?

Best regards,

Keiichi

over 6 years ago

0 Clinton Jensen over 6 years ago

TI__Mastermind 25500 points

Hello,

If you are using a coupled inductor (recommended) then you can pretty much treat it as a buck-boost. If you are using two separate inductors the control loop gets more complex, but if you just use a type I compensator (0.1uF to 1uF from COMP to ground) to reduce bandwidth it can usually be stabilized quite easily.

Regards,

Clint

0 user3942675 over 6 years ago in reply to Clinton Jensen

Prodigy 240 points

Dear Clint,

Thank you for the answer.

I plan to use a coupled inductor.

Best regards,

Keiichi

Power management

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TPS92691: Feedback Compensation for SEPIC