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Confusion in LCS and TFS

Posted by: Kalpesh Diyora on

Hello,
we want to design Ac to DC Converter with the following output rating.
V:54V
I:8A
For that we have going through your Site and found two solution for this design.
one is with using Hyper PFS + LCS and another is Hyper PFS + TFS.

But We are in a confusion whether to go with HiperTFS or HiperLLC.

SO, Can you suggest us which one is better in term of Efficiency, EMI, Transformer and Component count.

We hope Quick and positive response from You.

Thanks.

Comments

Submitted by PI-Neela on 04/27/2012

PFS+LLC has much better efficiency, transformer size is much smaller.

PFS+TFS has build-in stand by power supply. TFS has big cost advantage.

PFS+LLC has smaller overall board size. Both TFS and LLC can has passing EMI results. LLC is a resonant topology, we have quite a few supporting materials about how to optimize the design and EMI performances.

If your design is high end and focus on efficiency, LLC is the one. If you are looking for cost effective solution, TFS is the one.