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Feedback opto with high Common mode transient immunity (CMTI)

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Flyback

Well-Known Member
Hi,
We are doing 100W buck. Vin = 200V, Vout = 36V, Fsw = 150kHz.
The FET is low side, (easy to drive) and the controller is grounded at the input connector ground.
As such, we need opto feedback.
But AYK, the opto, from diode side to transistor side, will see rapid dv/dt.
So we need a feedback opto with high CMTI, but no feedback opto's list this parameter.

eg CNY17-2
FOD817

FAIRS24026-1.pdf

rocelec.widen.net rocelec.widen.net

FODM121

FAIRS27631-1.pdf

rocelec.widen.net rocelec.widen.net

Do you know of feedback opto's which do list this parameter?
 
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