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UCC25600EVM: OC pin configuration

Dilip Ramgir
Prodigy 90 points
Part Number: UCC25600EVM
Other Parts Discussed in Thread: UCC25600

Tool/software:

I'm using UCC25600 LLC controller in my design, I refered the EVM of UCC25600 for the calculation of 'OC' pin circuitry, I didn't understand the calculation and how did we get the values of the passives.

The formulas given in the datasheet, can you explain those as well how did we get to these. so that it helps me to design the component values for my application.

Just a brief about my design is Half bridge LLC with Vout=55V, Turns ratio of transformer is Np:Ns=6, PFC voltage is 665V, I need to shutdown LLC during short circuit and thus need to calculate the values for my design.

It would be of a great help if you could support in this.

Regards,

Dilip Ramgir