Current Transformer based Current Sense Circuit Design for Current Mode Power Supplies

In this video Dr Seyed Ali Shirsavar from Biricha explain the operation of a current sense transformer and how we select the correct one for our power supply.
We also discuss "current gain" of our current sense circuit for loop disguises and how incorrectly selected current transformer could cause a flattening of the current sense signal and subharmonic oscillations.
As it is customary in our videos experimental results will be given at the end of the video to show what happens in real life.
You can download a pdf presentation + numerical design example from here:
www.biricha.com/psudf-cs
and TI's paper on current sense circuit design can be downloaded from here:
www.ti.com/seclit/ml/slup114/...

[@GiC7]

Thanks, Dr. Seyed, I’m just starting in electronics and your explanation on a question that I had is very helpful . Thanks a lot for a great lesson.

[@adrienferreira4666]

Thank you Dr Seyed Ali Shirsavar, I saw such circuit in the B-G474E-DPOW1 Discovery kit from ST, in the Buck/Boost sub-system and I've always wondered why and how it works! Thank you very much for the explanation and the demo. You're a good teacher :)

[@initiallearnwithme]

Useful for me

[@atahghighi]

Thanks Ali for your educational videos, this video like your previous videos was very informative, Questions: What modelwas the current probe? What was the model of your scope? Thanks

[@amirb715]

but if there is no hall sensor in place, how is this useful for measuring the DC component of the current? I can see it will measure the AC component of the current waveform but the DC component seems to be lost while with the sense resistor you measure the whole waveform

[@jacob9773]

How to suppress the current spikes in the secondary of the current transformer I tried RC filter but the spikes are still there it effects the shape of the secondary wave form but not the spikes

[@lexweesle3294]

So, you don't need compensation ramp, with big ratio of current transformer?