Hello-
We are developing the power front-end which includes 2 converters. The 1st being the PFC section and the 2nd is the isolation converter which may be the LLC resonant Half-Bridge. The output is 15V @10A and we are concerned about efficiency. I have the following questions regarding the LLC converter:
1) We are aware that the LLC secondary rectifiers are typical for this converter however, synchronous rectifiers can also be used. Specifically, control IC’s exist for the drive and timing of LLC synchronous rectifiers and TI does indeed make this control IC. Can the UCC24610 Controller be used in the LLC converter?
2) There is an App Note referenced in Powerelectronics referencing this concept however TI’s EVM’s do not use their UCC24610 controller. Why not?
3) Does TI have an LLC EVAL module utilizing the UCC24610?
4) Can the UCC25600EVM (300W evaluation module) be modified to include the synchronous controller?
Thanks and Best Regards,
-Tim Starr on behalf of KB@ZM