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BLPFC

HELLO,

now, I use BLPFC kit.

PFC_BL_ICMD,In assembly, the algorithm of this module is   :out = [(VacRect*VinvSqr*Vcmd*VmaxOverVmin)/(Vpfc*VoutMaxOverVinMax*Duty)]*(Vpfc*VoutMaxOverVinMax - Vacrect).

but,

I don't understand the specific    principle    of the PFC_BL_ICMD:n module,And then I found DPLIB.pdf,as flowing:

However,I found that this is just a block diagram of that algorithm, and I still don't understand how it works.Why is it designed like this?Why do these inputs carry out the reference current?

Please tell the principle of this algorithm.

Looking forward to your reply.