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Ref kit simplifies BLDC motor control development

Posted: 20 Feb 2008 ?? ?Print Version ?Bookmark and Share

Keywords:brushless DC motor control? BLDC?

Renesas Technology America Inc. has introduced the R8C/25-based brushless DC (BLDC) motor control reference platform (MCRP). The platform allows engineers to quickly bring the latest motor control technology to appliances, power tools, fans, pumps and many other products, while providing the performance, reliability and power efficiency needed in these systems.

At the heart of the reference platform is a R8C/Tiny MCU that can handle different BLDC motor control algorithms to meet the three primary requirements for motor control applications: cost, performance and flexibility. The R8C/25 is based on the 16bit R8C CPU core and offers a maximum operating frequency of 20MHz.

The R8C/25-based BLDC platform supports the following four BLDC motor control algorithms:

? 120 trapezoidal Hall-sensor based BLDC motor control

? 180 sinusoidal Hall-sensor based BLDC motor control

? 120 sensorless (back-EMF) based BLDC motor control using external comparators

? 120 sensorless (back-EMF) based BLDC motor control using the MCU's on-chip A/D converters

The platform also offers design simplicity with a two-layer PCB.

The reference design comes with a complete hardware and software package to help reduce development risk. The hardware platform offers many features that allow users to experiment during development and debugging. Various configurations are user selectable via jumpers, and LEDs provide a visual indication of the switching pattern of the pulse-width modulation (PWM) signals driving the motor. Integrated debug and communication interfaces that use an isolated E8a debug port and an isolated serial port interface provide communication with the host PC. The hardware also incorporates overcurrent protection and an emergency shut-off function.

Pricing starts at $499 for the (YMCRPR8C25) R8C/25-based BLDC MCRP (circuit board with MCU, 24V BLDC motor, E8a debugger, control algorithms and documentation).

The devices will be available in Q2 08.

Renesas is one of the exhibitors in the upcoming IIC-China 2008.

- Gina Roos
eeProductCenter




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