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Compensation loop of LTC3805 Flyback


I'm designing 3-output flyback power supply using LTC3805-5 using Type-2 compensation network.

Is there any application note that talks in detail about compensation loops of LTC3805 controller? I'm simply amazed to find so little information on LTC controller feedback compensation as opposed to competition (like TI) who have focussed so much on the feedback loop, stability, bode plot, etc. 

My design works perfectly well in simulation, but is absolutely horrible on PCB. 

Any help on typical application that details about feedback/compensation loop would be beneficial - the application designs are not explained in detail enough. 


The power supply simply stops working after a certain input voltage, I've double checked to ensure there isn't overprotection scenario as there isn't any load attached to the outputs of Power Supply.
[edited by: bytewise at 9:45 PM (GMT -5) on 8 Nov 2021]