TL494 Constant Current and Constant Voltage

Discussion in 'The Projects Forum' started by circuit1234, Jun 18, 2016.

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  1. circuit1234

    Thread Starter New Member

    Jan 7, 2015
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    Hi
    can anyone help me to make work the constant current circuit with TL494 Half bridge config , Constant Voltage is working ,
    in constant current mode even the the ic can control the current the wave form is oscillating in sawtooth shape at 50hz to 100hz in some range like 0.5amps to 0.65
    and 0.8 to 0.9 , other range is ok

    My SMPS is 100Volt and 1Amps CVCC, running at 100khz , attached is the TL494 pic config and the feedback loop compensation , PIN 16 , and 15 is assigned for current sensing , if feedback compensation is the please help me to design the feedback loop
     
  2. DickCappels

    Moderator

    Aug 21, 2008
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