New MCU software eliminates an FPGA to achieve a sub-1 microsecond current loop
Texas Instruments (TI) has introduced DesignDRIVE Fast Current Loop software that makes C2000 microcontrollers (MCUs) the first devices to push current-loop performance to less than 1 microsecond. Together, TI's C2000 MCU portfolio and DesignDRIVE software delivers system-on-chip (SOC) functionality which simplifies drive control system development. New DesignDRIVE Fast Current Loop software out performs traditional microcontroller (MCU)-based current-loop solutions and can simplify designs by eliminating the field-programmable gate array (FPGA) typically used for external current-loop control. Fast Current Loop software is a free update available for C2000 controlSUITE software.
Features and benefits of TI’s DesignDRIVE Fast Current Loop software
- Innovative subcycle pulse-width modulation (PWM) update techniques significantly improve control-loop bandwidths to potentially triple the motor torque response.
- A novel cycle-scavenging C2000 MCU needs only 460 nanoseconds for field-oriented control processing.
- A new complex controller 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, like the TMS320F28379, delivers SOC functionality to reduce board space, complexity and overall cost.