2kW Full Bridge SMPS at 20kHz

[cupoftea]

Hi,
We were doing a 2kW PSFB off 400V PFC.
But realised the chip shortage may hit PSFB controllers.

I count approx 2 or 3 PSFB controllers on the market, from ti.com and analog (ex Linear)

So will also do plain FB, with simple ubiquitous controller.
Would you say 2kW is the practical limit of a FB at 20kHz?
Vout is +/-160V

 

[Easy peasy]

One can take a push pull output of a standard controller - put it thru some gates and get full 4 channel phase shift outputs - plenty of examples on the net

lower freq's are a good idea for +/- 160V out -

 

[byjuncal]

There is another PSFB alternative from renesas ISL6753.
A LLC is not an option?

https://www.renesas.com/us/en/produ...ollers/isl6753-zvs-full-bridge-pwm-controller​