Solution Finder Get Tech Support

HP - Family: How can i measure the control loop?

Posted by: High Power Designer on

Hello!

I have a question to my flyback - design with LNK 6664K - HP:

Can you tell me, how i can measure the control loop of my flyback with a

response analyser on the right way?

Where should i inject the probe - signal of the analyser?

Because the Feedback - network is something different to a flyback with a normal controller like 3844. 

Thanks for help.

Comments

Submitted by PI-Terry on 10/06/2014

Hi,

 

Yes, it is difficult to do the loop gain and phase measurement using link HP using typical method because of getting the feedback by sampling and hold the bias winding votlage (ac signal).

It is advised to check the step load response to check the stability of the power supply for using LNK HP ICs.