UC2827-1: PWM Controller solution for current-fed push-pull topology

Piotr F.

Intellectual 2580 points

Part Number: UC2827-1
Other Parts Discussed in Thread: LM5041

TI Experts,

Does TI have PWM controller solution for current-fed push-pull DC/DC topology (see below) ?

I understand PWM controller for this must support overlapping push-pull PWM - what parts do we have for this?

10 months ago

0 Aleksandr Drobyshev 10 months ago

Prodigy 20 points

Hello.
I may foresee the question "why this particular topology?". I'll add some clarity.
The intention to utilize current-fed push-pull topology is due to specific requirements:
plenty of PSUs should be powered by common 380VDC power bus.
In case of current-fed topology, inductor at the output behave as an impedance for switching noise.
Thanks.

+1 Manuel Alva Hernandez 10 months ago in reply to Aleksandr Drobyshev

TI__Expert 7706 points

Hi Piotr,

UC2827-1 is recommended for current fed push pull topologies. Please, refer to the document below for more details on a design review for this topology using UC2827.

Design review

Thank you.

0 Piotr F. 10 months ago in reply to Manuel Alva Hernandez

TI__Intellectual 2580 points

Hi Manuel,

Do we have any newer controller IC than UC2827?

0 Manuel Alva Hernandez 10 months ago in reply to Piotr F.

TI__Expert 7706 points

Hi Piort,

LM5041 is recommended for a replacement. It is not a pin-to-pin replacement, but it has same functionality and better performance in ambient temperature range and gate driver source/sink current.

Thanks

0 Aleksandr Drobyshev 9 months ago in reply to Manuel Alva Hernandez

Prodigy 20 points

Manuel, thank you for support.
Quite interesting is that searching systems are well aware about outdated UC2827, but no suggestions regarding LM5041 when searching "current fed". The same situation with TI web-page. If you will type LM5041 you will find it for sure, but willn't in case of "current-fed" search.
Thank you for support one more time.

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UC2827-1: PWM Controller solution for current-fed push-pull topology