The Vgate ramp up/down is too slow for our system but the current is set by an external resistor on pin 15.
Is it possible to switch (closed loop) the bias resistors in order to change gain/current while the EN is high?
You can reduce the ramp up time. We have an application note on bias controllers, AN-1363. There is a section addressing this topic.
You can change the Rsense to change target current. One thing to consider is that, keeping the Rsense resistance value deterministic would make the system more reliable. If there are undefined resistance regions while you change the Isense resistor, this can lead to instability in bias controller loop. I believe there are digiPots in the market than can do this.
Retrieving data ...