T
treez
Guest
OK, i am sure you know that VMC is a little harder than CMC, because CMC results in cancellation of one of the LC poles , since it controls the current in the inductor.
Also, in VMC you need a source sense resistor and comparator anyway, so as to put a clamped maximum on the fet current.........so people often then just use that resistor to do CMC with.
CMC needs slope compensation, but not when in DCM...and not when constant off time control is used.
Also, in VMC you need a source sense resistor and comparator anyway, so as to put a clamped maximum on the fet current.........so people often then just use that resistor to do CMC with.
CMC needs slope compensation, but not when in DCM...and not when constant off time control is used.