TI Expands Portfolio With Low Cost 32-bit Digital Signal Controller
Texas Instruments Inc. (TI) has added four new low cost members to the S320F280xx™ digital signal controller series targeted at motor control, digital power conversion and intelligent sensor control applications. The new S320F28015™ and F28016 controllers offer 60MHz of performance starting as low as $3.25 (in 1Ku quantities) while the new S320F2801-60™ and F2802-60 controllers also offer 60 MHz of performance and are based on the current S320F2801™ and F2802 devices. TI is also announcing a new digital power development kit, which consists of a S320C2000™ Digital Power Supply (DPS) software library and a series of hardware modules from Tier Electronics that provide off-the-shelf platforms that engineers can control with this software library.
As designers consider upgrading existing 8- or 16-bit microcontroller- (MCU) based designs, TI's F280xx controllers offer a portfolio of eleven software and pin-for-pin compatible devices with 32-bit DSP performance combined with the peripheral integration and ease-of-use of an MCU. All F280x-based devices feature a 32-bit wide data path for superior performance and mixed 16/32-bit instruction set for improved code density. These controllers offer exceptional system integration by providing complete control system capabilities from signal input through the on-chip,12-bit analog to digital converter (ADC), quadrature encoder pulse (QEP) interfaces, and timer captures and compares through signal output with up to 10 independent pulse width modulation (PWM) channels. Depending on the device, communication interfaces include CAN, I2C, UART and SPI ports.
All four new F280x devices feature a patent-pending pulse width modulator (PWM) with 150 picosecond (ps) resolution. The high resolution PWM (HRPWM) provides 16 bits of accuracy in a 100 KHz control loop and 12 bits at 1.5 MHz. As a result, power developers benefit from designs with cleaner power output, higher power density, smaller magnetics and more compact, cooler supplies. These benefits are critical in applications like ac–dc rectifiers that require high tolerances and faster transient response with small ripple amplitude. For motor control applications such white goods and automotive, designers can reduce overall system costs through integration and low device cost while leveraging the 32-bit performance necessary to implement advanced control techniques like sensorless vector control of three-phase motors. Using processor-intensive sensorless vector control can help developers to reduce the size and cost of a system's motors and power electronics required to meet their needs.
All four new controllers are AEC Q100 automotive qualified in 100-pin LQFP packaging. Developers can use the S320F2808™ eZdsp Development Kit (™DSEZS2808) to program all four of the new controllers. It is available today for $495 from TI authorized distributors. The eZdsp Kit includes a reference hardware platform with USB connection to the PC and the TI Code Composer Studio™ Integrated Development Environment.
