TIDA-00297, Refrigerator Damper and Fan Motor Control Solutions Reference Design

TIDA-00297, Refrigerator Damper and Fan Motor Control Solutions Reference Design. The Refrigerators often use a damper to control air flow and a fan to provide circulation. While discrete solutions have been used for years. This Design uses integrated motor drivers that provide easy control, high performance and full protection. The DRV8848 drives the stepper motor damper and the DRV10983 drives the BLDC fan with quiet 180 commutation. The BLDC even has closed-loop speed control, using an MSP430G2553 and the DRV8812 for a PWM-based power supply. BLDC and stepper control example code is provided in the MCU firmware. Protection from over-current, over-temperature and under-voltage are all integrated in the DRV devices