DSP devices are optimised for industrial control

Digital signal controllers provide DSP performance optimised for industrial applications like digital power management, servomotor control and intelligent sensor control.

Available now in volume from Texas Instruments, the TMS320F28044 and F2809 digital signal controllers offer 100MIPS of 32bit DSP performance optimised for industrial applications like digital power management, servomotor control and intelligent sensor control.

The F28044 controller allows power system designers to transition to software-controlled, digital power management using a 32bit processor and is targeted at multi-channel point of load (POL) applications such as telecommunications and networking infrastructure equipment, servers, laptop computers, and industrial equipment.

F2809 controllers allow engineers to develop highly integrated industrial control systems by combining a host of input, output and communications peripherals.

TI's TMS320C2000T controller platform's now includes 18 high-performance, 32bit controllers that combine real-time DSP performance with the peripheral integration, C-language efficiency and ease of use of a microcontroller (MCU).

F28044 and F2809 devices feature a 32bit wide data path for superior performance and mixed 16/32bit instruction set for improved code density.

These devices also feature a patent-pending pulsewidth modulator (PWM) with 150ps resolution.

This unprecedented high-resolution pulsewidth modulation (HRPWM) technology provides 16bit accuracy in a 100kHz control loop and 12bit at 1.5MHz.

In digital power applications, for example, higher resolution PWM results in a faster transient response with a smaller ripple amplitude.

The unique accuracy of the high resolution PWM eliminates 'limit cycle' issues, which means power supply designers are now able to use digital control in high-switching frequency supplies like those found in wireless basestations, network servers, and even digital televisions.

The TMS320F28044 (sampling announced in October 2006) is the industry's only single, programmable controller that can manage up to 16 DC/DC convertor channels for multi-phase control.

Each channel offers 150ps resolution and is based on patented HRPWM technology.

The controller's programmability lets designers build intelligence into power supply systems and simultaneously manage sequencing, margining, phase compensation, and transient response of multiple DC/DC convertors.

DSP performance plus integrated HRPWM technology provides the full digital loop control and output accuracy necessary at switching frequencies over 1MHz.

The F28044 controller is part of TI's growing DSC and high-performance analogue portfolio of digital power solutions that enable designers to implement digitally controlled power systems with high system intelligence and performance in an easy-to-use, intuitive development environment.

TI's digital power solutions are optimised for applications ranging from point-of-load to high-power AC/DC and DC/AC conversion.

At US $5.00 in volume, the F28044 device provides full digital loop control and system management for only $0.32 per channel.

Because one F28044 device performs all loop control, sequencing, system management and communications for up to 16 DC rails, designers save costs by eliminating individual analogue convertors, stand-alone sequencing chips and communications MCUs previously used in complex POL applications.

The F28044 controller is part of TI's growing high-performance digital and analogue portfolio of digital power solutions that enable designers to implement digitally controlled power systems with high system intelligence and performance in an easy-to-use, intuitive development environment.

From its Fusion Digital Power series of UCD9K and UCD7K controllers and power supply drivers, to the fully programmable TMS320F28x DSC controllers, TI's digital power solutions are optimised for applications ranging from point-of-load to high-power AC/DC and DC/AC conversion.

The F2809 controller offers exceptional system integration, providing complete control system capabilities from signal input through the on-chip analogue to digital convertor (ADC), quadrature encoder pulse (QEP), and timer captures and compares through signal output with up to 16 independent PWM channels.

The 12.5Msample/s, 12bit ADC boasts an effective number of bits (ENOB) of 10.9 and is valid across the full -40 to +125C temperature range.

Key communication interfaces include multiple CAN, I2C, UART and SPI ports.

The F2809 device offers 256Kbyte of on-chip Flash and includes six 150ps-resolution PWM channels.

The F2809 controller is available for $13.00 (1000 units).

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