Other Parts Discussed in Thread: PMP20978,
Hi,
We are aiming at 96+% efficiency for PFC+LLC at 750W.
The design has tight spacing requirements ~ 45W/in3 for the inner room.
The casing is designed to dissipate 30W with a 30~35 deg. temperature rise.
Starting with the LLC, is 1MHz switching frequency achievable?
Plan to use GanFET for switching devices and SR.
From other designs like PMP20637 / PMP20978, I see that a dead-time control for SR is implemented.
I guess it is necessary? How could it be implemented with the MCU solution?
Can TMS320F28002x MCU be used for that implementation (48-pins package).
For the PFC stage.
Apart from MIPS power and magnetic design, is there any parameter that could limit the switching frequency (ZVS? spike?)
Using the CCM totem pole design of TIDA-010062, can a 500KHz switching frequency be achievable with a 98% PFC efficiency?
Thank you
David