Fast, sub-1-µsec, MCU control loop code can cut an FPGA from architecture

Fast, sub-1-µsec, MCU control loop code can cut an FPGA from architecture

New Products |
By Graham Prophet

DesignDRIVE Fast Current Loop software, TI adds, makes C2000 microcontrollers the first devices to push current-loop performance to less than 1 microsecond. This represents system-on-chip (SOC) functionality to simplify drive control system development. The software out performs traditional microcontroller (MCU)-based current-loop solutions and can simplify designs by eliminating the FPGA typically used for external current-loop control. Fast Current Loop software is a free update available for C2000 controlSUITE software.


TI’s DesignDRIVE technology is a unified hardware and software platform that makes it easier for engineers to develop and evaluate solutions for a variety of industrial drive and servo topologies. As a key part of DesignDRIVE solutions, the new Fast Current Loop software enables developers to achieve higher control performance while saving valuable board space and simplifying thermal considerations.


DesignDRIVE Fast Current Loop software offers;

– Subcycle pulse-width modulation (PWM) update techniques to significantly improve control-loop bandwidths to potentially triple the motor torque response.

– A cycle-scavenging C2000 MCU that needs only 460 nanoseconds for field-oriented control processing.

– A complex controller that replaces traditional proportional integration control and facilitates greater stability at higher speeds.


Industrial drive systems designed with Fast Current Loop software on a C2000 MCU, such as the TMS320F28379, delivers SOC functionality to reduce board space, complexity and overall cost.


Developers can get started by downloading TI’s free Fast Current Loop software on the DesignDRIVE solutions page. The C2000 DesignDRIVE development kit for industrial motor control (TMDXIDDK379D) includes the hardware for industrial motor control designs and can support two simultaneous Fast Current Loops as well as DesignDRIVE Position Manager technology. The kit is also available as the reference design, TIDM-SERVODRIVE.


The DesignDRIVE Fast Current Loop is available today for the C2000 Delfino TMS320F2837x family of MCUs for advanced control applications, that start at $11.32 (1000). The C2000 DesignDRIVE development kit (TMDXIDDK379D) is available for $999. TI plans to offer Fast Current Loop support for the TMS320F2807x and TMS320F28004x C2000 Piccolo MCUs in the future.





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