Hello,
I am trying to simulate PSFB based on UCC28950. According to datasheet, if , VADEL = 1.8 , VTABSET can be programmed between 29 ns and 155 ns:. In my simulation I set RAHI=8.25k and RA=4.64k. RAHI is connected to VREF. RAB and RCD are 13k (minimum value according to datasheet) but delay between outputs A and B is 270ns. To reduce this delay I need to reduce RAB and RCD to 7k (but this is restricted by datasheet). In this case the delay drops to 125ns. Could you,please, explain this. I use unencrypted UCC28950 model, provided by TI. Simulator - Simetrix.
Thanks