TI scales up MCU performance

19 November 2014 DSP, Micros & Memory

For designs requiring a boost in performance without a proportional cost rise or the need to change hardware or software design, the powerful combination of C28x CPU and accelerators in Texas Instruments’ C2000 Piccolo F2807x microcontrollers (MCU) boosts execution speeds of control tasks in industrial applications such as telecom rectifiers, server power, solar micro inverters, frequency inverters and electric/hybrid vehicles.

The devices provide many analog and control peripherals to enable more integrated control applications, and are scalable with the previously announced Delfino F2837xS and F2837xD MCU generations. Their real-time control accelerator (CLA) doubles throughput, providing an additional 120 MHz of floating-point processing capability. This additional bandwidth allows designers to run parallel math-intensive or time-sensitive signal processing tasks.

Offloading these tasks to the CLA enables the CPU to focus on general system tasks such as diagnostics, communications, motion profiling and more. Also integrated in the main C28x CPU is a trigonometric math unit (TMU) accelerator, which enables the chip to quickly execute trigonometric algorithms used in transforms and control functions.

The MCUs are also packed with high-end, smart analog and control integration – including a flexible, enhanced pulse width modulator (PWM) that supports all digital power topologies – to decrease digital control system complexity. Three 12-bit analog-to-digital converters (ADC) increase sampling throughput by allowing designers to perform simultaneous tasks such as monitor voltages and currents of three-phase motors while decoding high-frequency resolver feedback.

The F2807x can simultaneously process eight delta-sigma modulated channels, each with threshold comparators and a seamless interface to the TI AMC1204 isolated delta-sigma modulator, for isolated current and voltage measurements. Window comparators provide critical power stage protection.

For more information contact Arnold Perumal, Avnet Kopp, +27 (0)11 319 8600, [email protected], www.avnet.co.za

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