UC2856Q: Using two UC2856Q in a parallel interleaved design.

Jose Tamez

Part Number: UC2856Q
Other Parts Discussed in Thread: UC2846, UC2856

I'm trying to use a couple of UC2856Q controller in parallel to double the power output of my design.

I already have a single IC flyback design working to which I want to add extra power. The datasheet shows briefly that this IC can work in a master/slave configuration, but I don't know clearly what to do with the current sense feedback.

Is it also possible to use the SYNC signal inverted to have the slave IC as an interleaved controller?

over 8 years ago

0 Peter Meaney over 8 years ago

TI__Mastermind 31580 points

Hi Jose,

I need to find the correct applications engineer to answer your question. In the meantime can you provide details of the design that you are working on, input voltage range, output voltage and power level?

Thanks

Peter

0 Ulrich Goerke over 8 years ago

TI__Mastermind 40120 points

Hello Jose,

I have referred your question to the appropriate team. Please look for an answer soon.

Regards,
Ulrich

0 Peter Meaney over 8 years ago in reply to Ulrich Goerke

TI__Mastermind 31580 points

Hi Jose

The UC2856 is an upgraded version of the UC2846 and there is an E2E post on synchronizing the UC2846 that should apply to the UCC2856 as well.

e2e.ti.com/.../2077654

Regards

Peter

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UC2856Q: Using two UC2856Q in a parallel interleaved design.