Microchip Launches AVR® EB Family of Microcontrollers to Reduce Noise, Vibration and System Harshness in BLDC Applications

As electronic devices evolve, more motors are being utilized across consumer, automotive and industrial markets. Many designers select Brushless DC (BLDC) motors to increase device longevity and lessen Noise, Vibration and Harshness (NVH). Historically, achieving these benefits required sophisticated control algorithms and waveforms that were outside the capability of cost-optimized controllers. Microchip Technology has launched its AVR^® EB family of microcontrollers (MCUs) to offer a solution for addressing NVH and efficiency in a wide variety of cost-sensitive applications.

AVR EB MCUs can adjust speed, timing and waveform shape—creating sinusoidal and trapezoidal waveforms—to improve the smoothness of motor operations, reduce noise and increase efficiency at high speeds. These adjustments can be made on the fly, with near-zero latency, using the AVR EB MCU’s unique set of on-chip peripherals that enable multiple functions with minimal programming. The result is a reduction in code complexity, faster response to changes in operating conditions and lower overall Bill of Materials (BOM) cost since several tasks, such as reading environmental sensors and serial communication, can be performed independent of the CPU. Additionally, the devices’ small form factor (as small as 3 mm x 3 mm) enables them to be mounted directly to the motor for a compact control solution (more info).