Hi,
We wish to do the gate drive connection as in Fig 10.3, page 31 of the UCC21520 datasheet.
However, UCC21520 is expensive, and we don’t need Disable and Dead time pins. So, how, in eg digikey, can we do a search for such an isolated bootstrap gate driver which has a V(boot) to V(sw) power supply capability of 25 to 30V minimum? Digikey doesn’t allow you to do this search pick.
(We also dont need 600V isolation, as this chip will be sat in the high side, with a hi side power supply to power it, and the gate drive signal will be sent up with a signal pulse transformer. However, the signal input does need isolation from the output, so that we can have the negative output rail)
UCC21520 datasheet
https://www.ti.com/lit/ds/symlink/ucc21520.pdf?HQS=dis-mous-null-mousermode-dsf-pf-null-wwe&ts=1650625810270&ref_url=https%253A%252F%252Fwww.mouser.co.uk%252FEDIT: Aah, digikey has a section called "isolators gate drivers" and this appears to have many eg UCC5320E
https://www.ti.com/lit/ds/symlink/ucc5310.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1650604285148