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The RF Workbench / Re: NCP driver sucks
« on: November 11, 2023, 0612 UTC »Used them to 15MHz without issue.
Driving 6nC GaN @6V.
Str.
Let us be clear about the situation we are discussing.
The GaN Systems transistors that seem to be your transistor of choice these days appear to be quite nice based upon review of the datasheet and I'm sure they work well in reality. However, the drive requirements are somewhat light compared to the other 99.99% of transistors on the market. (I chose one of the three of their current production FETs with Qg ~6 nC to show below as an example but the exact model number matters little.)
I have no interest in continuing to use a FET driver with a somewhat niche application (and freaks out when presented with anything beyond the lightest of loads like a GaN Systems FET) when I can easily obtain other drivers that can drive your GaN Systems transistor to full Rds_on with ease and also handle most or all low, medium and high- power transistors that I or any other hobbyist would want to use.
I'm actually using the ISL89163 in a work application, providing what amounts to continuous synchronization pulse distribution/fan-out driver for hundreds of loads though many tens of meters of wiring harness and PCB traces - with all the parasitic L and C that this represents - and it doesn't argue with me, doesn't do weird shit and doesn't burn up. Case closed.