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LED Driver ICs Forum Discussions

Moderator 10 likes received 10 sign-ins 5 solutions authored
SEPIC DC-DC converter needs two inductors to properly work. The two inductors can be wrapped on the same core (coupled inductors) or on two separated cores (uncoupled inductors).

SEPIC using coupled inductors shows

  • higher efficiency due to reduced magnetic core losses
  • reduces PCB area because it needs the space for only one magnetic component
  • simpler compensation due to simple transfer function

On the other hand SEPIC using uncoupled inductors can benefit of components coming from a wider inductance selection thus proving flexibility in the system design.

To see how to use LITIX Power DC-DC controller in SEPIC topology, please have a look at the LITIX Power webpage
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