Speed Controller Design

[Geek 2.0]

Originally Posted by Al Skierkiewicz

Where the Jaguar and Victor differ is that in the Victor, both FETs in the pair are controlled by PWM signals while in the Jaguar, only the high side FET is PWM while the low side FET is ON for direction.

Okay I'm sorry if I'm being difficult here, but it seems that the way the circuit is laid out, it wouldn't be possible for a Jaguar to control the high and low side FETs separately, because of the gate driver they use (which makes the high side and low side always opposite each other, unless they are disabled).

Maybe I'm missing a big piece to this puzzle.

Also, would using multiple FETs per leg of the H-Bridge just increase the gate capacitance, meaning you can use as many as the driver can handle effectively (if that makes any sense)? And I would assume using more FETs per leg of the H-Bridge would provide higher current capacity...


By the way, thank you all for being so helpful! I've gone 0-60 (or maybe 35...) on this topic over the past two days!