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TI's DSP controllers target power conversion, motor-control apps

Posted: 17 Jul 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Marty Gold? TI? TMS320F280xx? digital signal controller? Microchip?

Targeting digital power conversion and motor-control applications, Texas Instruments Inc. has added four new members to its TMS320F280xx digital signal controller family. The move follows the announcement of Microchip Technology Inc.'s new PIC-based DSP controllers, which also target digital power conversion products.

TI's TMS320F28015 and F28016 controllers offer 60MHz of performance, starting as low as $3.25 (in 1,000-unit quantities). The TMS320F2801-60 and F2802-60 controllers also offer 60MHz of performance and are based on the current TMS320F2801 and F2802 devices.

TI also unveiled a new digital power development kit, which consists of a TMS320C2000 Digital Power Supply (DPS) software library and a series of hardware modules from Tier Electronics, providing off-the-shelf platforms that engineers can control with this software library.

All F280x-based devices feature a 32bit-wide data path for superior performance and a mixed 16-/32bit instruction set for improved code density. The devices have either 32Kbytes or 64Kbytes of flash and 12Kbytes of RAM. The controllers offer system integration by providing complete control system capabilities from signal input through the on-chip, 12bit ADC, quadrature encoder pulse interfaces, and timer captures and compares through signal output with up to 10 independent PWM channels. Depending on the device, communication interfaces include CAN, I2C, UART and SPI ports.

All four controllers are AEC Q100 automotive-qualified in 100-pin LQFPs. Developers can use the TMS320F2808 eZdsp Development Kit (TMDSEZS2808) to program all four of the controllers. The kit is available today for $495 from TI's authorized distributors. The kit includes a reference hardware platform with USB connection to the PC and the TI Code Composer Studio Integrated Development Environment.

Targeted initially at AC/DC rectifier and DC/AC inverter applications, TI's digital power development kit includes the DPS software library and DPS hardware modules. The DPS library provides reference software for key functions used in an AC/DC rectifier, solar energy inverter and uninterruptible power supply applications.

The DPS hardware modules are low-cost boards from Tier Electronics, a leading TI third party. They provide an easy way for engineers to start working on F280x controller-based digital power designs without having to build their own controller or power-stage hardware. The first two modules in the kit are targeted at PFC and DC/DC converter designs.

The PFC module is a two-phase boost topology while the DC/DC module is a dual phase-shifted full-bridge topology. Each board is available individually for $295 directly from Tier and connects easily to TI's TMS320F2808 eZdsp development kit, which provides the controller hardware. The TMS320F2808 eZdsp development kit (TMDSEZS2808) is available for $495 from Texas Instruments. The DPS hardware modules will be available from Tier starting in late September.

- Marty Gold

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