Hi, given the VNH5019 has two half-bridges, I was wondering if it is possible to use it to drive two DC motors independently (i.e., each with different voltages)?
For context, I want to use the motor driver to simply convert the voltage from a 12V LiPo battery to deliver 4V and 6V to each motor respectively. I can’t seem to find a common ground for the bridge outside the two output pins.
Thanks for your help in advance!
Connecting one motor from each output to ground might work, but the VNH5019 is not designed for that purpose. Of course the peak applied voltage will always be slightly less than the battery voltage.
Here is the output truth table from the VNH5019 data sheet:
Hello.
All of the VNH5019 grounds are connected by the PCB, and both half-bridges are powered from the same supply. That means the outputs will pass the same voltage when they are turned on, but you could control the duty cycle of each output independently according to the truth table Jim posted, which for motors will essentially have the same effect as delivering different voltages.
- Patrick
