TI Intros TMS320F2801, TMS320F2806, and TMS320F2808 Digital Signal Controllers
Texas Instruments Inc. (TI, Houston, TX) announced volume production of its TMS320F2801, TMS320F2806, and TMS320F2808 digital signal controllers. Based on its digital signal processing (DSP) technology, the 32-bit controllers feature an integrated, control-optimized, peripheral mix that includes a patent-pending pulse-width modulator (PWM) with high resolution for fast control loops and quick system response, as well as accurate control systems – making the controllers suitable for applications ranging from digitally controlled power supplies and laser-based air and medical sensors to vector-based motor control.
The TMS320F28x™ controllers' PWM technology enables the use of digital control in high switching frequency supplies like those found in wireless base stations, network servers, and uninterruptible power supplies. With a DSP core and the C-language efficiency and ease-of-use of a MCU, the F28x controllers offer 100 MIPS of 32-bit DSP performance. The ability to position the edge of a PWM signal with 150 ps precision or 16 bits accuracy in a 100 KHz control loop enables faster transient response and smaller ripple amplitude to eliminate "limit cycle" issues in digital power applications.
The F280x controllers integrate a number of peripherals, including 128 KB of flash memory; a 12-bit, 16-channel, analog-to-digital converter; 16 independent PWM channels; quadrature encoder pulse; and time stamping capture inputs for position sensing. The high integration enables a single F2808 device to control up to five independent, three-phase motors simultaneously. A 32-bit wide data path ensures execution performance while mixed 16-bit/32-bit instruction achieves code density. Key communication interfaces include multiple CAN, I2C, UART, and SPI ports.
The TMS320F2801 controller is priced at $4.95, the TMS320F2806 is priced at $7.45, and the TMS320F2808 is priced at $9.95, all in production quantities. Each device is automotive-qualified and available in both a 100-pin LQFP and 100-ball BGA package. The F2808 eZdsp Starter Kit (TMDXEZS2808) is also available for $495 and includes hardware tools, TI's Code Composer Studio™ integrated development environment, and application software.
