Folks,
Looking up and down the various mfgs I can only find drivers with fairly wimpy muscles, nothing much below 10ohms Rdson on the drivers. I need:
PWM input with programmable dead-time
200V or higher bootstrap voltage No fancy RF isolation scheme (noise requirements) Capabable to do 1MHz without internal melt-down Can drive FETs with up to 2000pF Cgs No more than 30nsec rise/fall time Long term availability (meaning no consumer-electronics stuff)Example:
But ... it's wimpy. Above 200-300kHz it becomes seriously hot and it's outputs don't have much power. Do you know something similar that won't heat up too much below 1MHz and can send several amps into the gates for a zippy switch-over?
A buck driver such as the LTC3810 could be pressed into service. Unfortunately they don't go past 100V.