Renesas debuts MCUs optimised for single-motor applications
Renesas has introduced the RA2T1 microcontroller (MCU) group based on the Arm Cortex-M23 processor optimised for motor control systems. RA2T1 devices are specifically designed for single-motor applications such as fans, power tools, vacuum cleaners, refrigerators, printers, hair dryers and many more.
The new RA2T1 devices include a number of features designed to enhance motor control function, specifically in single-motor systems. One of the notable features is a 3-channel S&H function that simultaneously detects the 3-phase current values of Brushless DC (BLDC) motors. This method provides superior control accuracy as opposed to sequential measurement methods. The RA2T1 MCUs also offer complementary Pulse Width Modulation (PWM) function of the timer, which enables automatic insertion of dead time and generation of an asymmetric PWM. This function is optimised for inverter drive, which facilitates control algorithm implementation.
The RA2T1 devices offer safety features that are critical in motor control applications. They provide a Port Output Enable function and a high-speed comparator that work together to quickly shut off the PWM output when an overcurrent is detected. The shutdown state can be selected according to the inverter specifications.
The new RA2T1 Group MCUs are supported by Renesas’ Flexible Software Package (FSP). The FSP enables faster application development by providing all the infrastructure software needed, including multiple RTOS, BSP, peripheral drivers, middleware, connectivity, networking, and security stacks as well as reference software to build complex AI, motor control and cloud solutions. It allows customers to integrate their own legacy code and choice of RTOS with FSP, thus providing full flexibility in application development. Using the FSP will ease migration of motor control designs to other RA Series devices.
