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LM5030: Push pull converter Application circuit

Part Number: LM5030 Hicompany Team, I have below query in LM5030 Current mode push pull converter application circuit. 1)Zero frequency (Fz) formed by R14 and C18 for cancel opto pole? 2)How plant and opto pole compensated by error op amp? Regards, Kubendran

Hello Kubendran G1 Your question refers to Figure 8 of the LM5030 data sheet. R14 and C18 is a high frequency filter that is placed to eliminate any switching noise pickup on the COMP input. Its function is to filter out any parasitic noise pickup due to pcb layout. It is not part of the classical feedback network. Your question on the compensation method use in this application can best be answered by studying any or all of thecompany seminary papers. These papers are located here. Regards John

Hi Sir, Thank you for your reply. Please share any specific document for opto coupler based loop compensation. I searched slope compensation like UC1846 which is differently implemented than LM5030. For additional slope compensation how to calculate required resistor value to avoid oscillation ? Regards, Kubendran

Hello, Please check the reference I have provided for the required information. Regards John