DRV8262: Single direction peltier driving

I am currently designing a laboratory reactor control board, which has 2 peltier and 2 heater resistor. The peltier is only for cooling, so am planning to use it single direction. The input voltage is 15V and one peltier draws 6Amps at 15V. The board have atmega328 mcu.

My question is, for single direction peltier operating , is it reasonable to use DRV8262? Is it better to use a simple voltage feedback buck converter?(Voltage feedback controlled by MCU PWM)

Regards,