Pololu Dual MC33926 issues

Hi, I have 3 Pololu Dual MC33926’s set up as arduino shields, they are stacked on top of one another on an arduino mega and I am powering them with 12V’s also powering the arduino from the shield. The issue I am having is that I am not getting the full 12V output to my motors. I have 6 motors connected to the shields, some of the motors are receiving more power (11v) while some others are only getting about 7V, this happens if I only use one motor at a time or all of them. Any help with this would be appreciated, thanks.


Could you post pictures of your setup that show your connections? What kind of motors are you trying to use? Are these motors controlled in sets (like 3 left and 3 right motors) or are you trying to control them all independently?