Dear All,
I would like to use the DRV8432 EVM as a TEC driver. I connected the EVM board to two peltier elements - 2 output mode configuration, PWM A OUT and B OUT for one peltier and PWM C OUT and D OUT for the other peltier - (spec of peltier: 48V / 13A / 2,8 Ohm). In addition, I soldered 8 capacitors as described in the manual for the PWM outputs (4x 680nF 1210, 50V and 4x 470uF, 63V)...
Everything is operating OK, however, I cannot achieve output currents higher than 4 A per channel... I am operating the EVM in mode 1 and 4. In both modes the result is the same.
I am missing something? What is wrong in my configuration?
The power supply is 48V/15A...
In addition, when I change the peltiers for resistor of 1 Ohms, I get even lower current...
Thank you!
BR,
Uros