+ Post New Thread
Results 1 to 1 of 1
  1. #1
    Advanced Member level 5
    Points: 32,618, Level: 44
    Achievements:
    7 years registered

    Join Date
    Sep 2008
    Location
    cambridge
    Posts
    6,791
    Helped
    492 / 492
    Points
    32,618
    Level
    44

    Feedback loop of flyback with uc3901 feedback IC

    Hello

    Page 6-2 of the following has a schematic of a flyback with a UC3901 isolated feedback generator

    Page 6-12 onwards explains the feedback loop.

    http://www.ti.com/lit/ml/slup078/slup078.pdf



    ...however, i am unable to write down the poles and zeros of the error amplifier transfer function......as i am confused by the UC3901 and the details about the modulator.
    In the error amplifier transfer function, is the only part that gives phase change that part with the 1n5 cap near the UC3901?

    UC3901 Datasheet
    http://www.ti.com/product/uc3901

    UC3842 Datasheet
    http://www.ti.com/lit/ds/symlink/uc3842.pdf
    Last edited by treez; 9th October 2012 at 06:16. Reason: spelling

    •   AltAdvertisement

        
       

--[[ ]]--