gain/phase margin of SMPS

Gain/phase margin of SMPS, a forum discussion on Cleverscope Mixed Signal USB Oscilloscopes. Join us for more discussions on Gain/phase margin of SMPS on our Questions forum.

Back to Forum Index : Back to Questions   RSS

29 Apr 2015
Posts: 1

I would like to as the question about bode plot of Switchmode power supply.

Can i use the CS328A FRA for offline Switch mode power supply to measure gain/phase margin of it?

second question, Can i use CS328A FRA for 45V output Switch mode power supply (AC/Dc converter)?

Please reply me as soon as possible.


8 May 2015
Posts: 477

Sorry - emailed, but forgot to post.
Yes you can used the CS328A FRA to measure the gain/phase of an off line power supply. The CS701 allows injecting signal into the feedback path with up to 300V Class II isolation.

If you are measuring a 45V output power supply you will either need to set the probes to 10x (for sub 10 Hz response) or use AC coupling.

So both are possible.
Back to Forum Index : Back to Questions   RSS
You must be logged in to post a reply

You need to Register or Log In before posting on these forums.


Your shopping cart is empty.