flangefrog
1 kW
Ok. I just noticed the MAX14921 is rated at 65V max (70V absolute maximum) - I had been thinking it was 60V - so I think it's best to use a 70-80V fet anyway so there is at least a bit of headroom when using the full range (e.g. 15S 4.35V Li-Ion)Alan B said:I don't think you'll see the motor at the BMS since the controller's cap bank is in the way.
That makes sense. But would the controller caps not also protect against the wire inductance?Alan B said:You'll see the wiring inductance when the BMS switches off. You might want to switch off slower. Going too fast is a liability. Good engineering will choose a turnoff rate that will mediate the various issues.
In the event of a short there are obviously going to be no high voltages caused by the inductance so in that case it would be best to switch off as fast as possible. I'll look at making a second driver to pull the gate low or something.