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Controlling two motors with only one DSC

Microchip (USA) has added the dsPIC33EP “GM710” DSC to their dsPIC33E series. This dsPIC digital signal controller (DSC) can independently control two motors, including connection to multiple CAN networks.

Optimize motor-control costs by controlling two motors with one DSC, including connection to multiple CAN networks (Photo: Microchip)

THE SERIES FEATURES A 70 MIPS dsPIC DSC CORE with integrated DSP and enhanced on-chip peripherals. They can be used to control brushless DC, permanent magnet synchronous, AC induction and stepper motors. These devices are suitable for high-performance general purpose applications.

Each controller enables dual motor control by integrating six paired PWM channels, for a total of twelve PWM channels, as well as multiple 32-bit quadrature encoder interfaces. In addition to reducing the cost and complexity of PMSM or BLDC motor control, each of the controllers also integrates dual CAN modules allowing the devices to act as a communication hub for automotive or industrial applications to interface with multiple CAN networks.

The combination of the processing power of a DSC, with two independent on-chip analog-to-digital converter (ADC) modules, also enables advanced sensing with support for up to 49 channels. They provide the flexibility to be configured for 10-bit, 1,1 million samples per second with four sample and holds; or 12-bit, 500 kilo samples per second with one sample and hold. Scheduling of high-speed peripheral operations is achieved through the on-chip peripheral trigger generator (PTG), saving software cycles and simplifying firmware design.

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