Please take a minute to review and accept our Terms of Use.
Welcome to the PLECS User Forum, where you can ask questions and receive answers from other members of the community.

Many technical questions regarding PLECS are answered on the Technical Solutions page of our website. Tutorial videos, specific application examples, and pre-recorded webinars are available on our YouTube page. Please follow us on LinkedIn for the latest Plexim news.

Multiple Sampling during switching interval

0 votes
403 views
What is the easiest way to implement an interleaved sampling approach for 3 parallel DC-DC converters? I want to sample each individual control loop (three in parallel) at the begining of the individual switching intervals. However, the ZOH only allows setting of the sample time, and not setting of a phase delay between multiple sampling. Any insight is appreciated.
asked Oct 29, 2020 by tbeechner (16 points)

1 Answer

0 votes

It's not immediately obvious, but the ZOH parameter is a Discrete-Periodic sample time input.  That means you can enter the sample time as "Tp" or "[Tp,To]" where Tp is the sample period and To is the offset in seconds within that sample period (0≤To<Tp).  A basic example is attached. 

Another approach would be to use triggered subsystems.  The nice thing about that approach is you can visualize how the trigger is aligned in a scope.

answered Oct 29, 2020 by Bryan Lieblick (1,853 points)
This is just what I was looking for - thank you.
...