PWM for Peltiers....

Thanks...one more question.

I am using the megamoto board. I will use it in the hbridge configuration.

However, I am confused. Looking over the schematic , I am not sure how you tell it to go in the reverse direction. There is an enable pin and a PWM pin, however, there is no select to control which 2 of 4 output fets to use... The data sheet does not really tell you either, but it shows that there are 4 fets, but i am still not sure how you select which fets to use in each chip.