DSP, Micros & Memory


Motor controllers plus free source code

25 July 2007 DSP, Micros & Memory

Microchip's new low-cost, high-performance (40 MIPS) dsPIC33FJ12MC family, available in 20- and 28-pin packages, is an ideal platform for advanced, space-constrained motor control, power conversion and LED lighting applications. In addition to the dedicated hardware, a range of free software algorithms is being offered for sensorless field oriented control (FOC) of permanent magnet synchronous motors (PMSMs), to take full advantage of these features. Specific motor control features include a motor control PWM module with two independent clock sources (enabling, for example, motor control and power factor correction algorithms in a single device), an optimised analog-to-digital converter, and an on-chip quadrature encoder interface. The new family also features peripheral pin select capability, which allows designers to re-map digital I/O - allowing designers to use smaller pin count devices, minimise board space and optimise board layout to reduce noise.



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