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  1. elektrojack

    UC3843 boost stability

    The dcr is the resistance in dc conditions and esr is the resistance in high frequency conditions. I measured the esr of the cap, about 140mohm at 100khz with an lcr meter. This is the connection of the output stage of the boost...
  2. elektrojack

    UC3843 boost stability

    I don't found the datasheet of the cap. however if i have the cap in series with an inductor (primary winding of a coil) and the inductor have a resistance of about 1ohm, i can neglect the esr of the cap because is smaller than the resistance of the coil. Right? thanks
  3. elektrojack

    UC3843 boost stability

    Hi, the datasheet says to ad a pole of a freq fp=1/(2*pi*Cf*Rf) at the same freq of the zero introduced by the esr of the output filter capacitor. Cf and Rf are between the pin 1 and 2. I don't know the esr of the capacitor, but i know that the capacitor is in series with a primary winding of...
  4. elektrojack

    UC3843 boost stability

    Hi everyone, i need help to ensure the maximum gain and the stability of my boost converter. My boost operates with a freq of 100kHz and a inductor of 400uH. the out voltage is about 430v set by the divider at output. the peak of current in the inductor is 5amps and it is set by the sense...

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