Texas Instruments' High Output Drive, Integrated Controllers Simplify Power Supply Design for High Performance DSP Solutions
DALLAS (April 20, 1998) -- Leveraging its expertise in both digital signal processing (DSP) and analog design, Texas Instruments (TI) (NYSE:TXN) announced today a family of integrated power supply devices for high performance DSP solutions. This family of switching regulators delivers higher output drive capability and offers a higher level of integration than is currently available in the market. With this capability, designers of high performance DSP applications can lower system costs and increase power supply efficiency up to 95 percent, depending on the specific application. Applications for DSP solutions are multiplying rapidly and today include wireless local loop base stations, virtual reality 3-D graphics, speech recognition, imaging such as fingerprint recognition, ultrasound and MRI.
"This family of power supply controllers -- designated the TPS56xx -- is particularly well suited to DSP solutions based on TI's TMS320C62x, the TMS320C67x, and systems requiring multiple TMS320C54x DSPs," said Jonathan Bearfield, Power Supply System Engineer for TI. "We've integrated several power management capabilities on these devices, including ultra-fast comparators and responsive compensation capabilities to handle load transients. This integration lowers system costs and saves board space by reducing the need for other external devices."
Advanced hysteretic control features, not typically found in comparable power supply devices, have been integrated into the TPS56xx family. These features allow the devices to monitor their output and maintain the precise level of power needed for effective system operation. With programmable hysteretic controls, TPS56xx devices are able to quickly respond and compensate for load transients when system functions dictate that the power supply output must suddenly increase or decrease, either minutely or dramatically.
The TPS56xx devices enable highly efficient designs, by allowing transfer of up to 95 percent of the input power to the output load. With its high output drive of 2 amps, the TPS56xx family is capable of supplying the processor power and, in many cases, can also supply the power for an entire system. In a modem, for example, a TPS56xx regulator could provide power for the system's DSP, line drivers, analog-to-digital converters, amplifiers and other components.
The new family of power supply controllers consists of the following four devices: TPS5615, TPS5618, TPS5625 and TPS5633. They have output voltages of 1.5V, 1.8V, 2.5V and 3.3V, respectively. With this range of voltages, designers can more easily implement mixed voltage systems. For example, a 1.8V supply can be used for a DSP core while a 3.3V device is used for the DSP's input/output (I/O) functions.
The TPS56xx family comes in TI's PowerPAD™ package for improved thermal characteristics. This package has an exposed thermal pad that can be soldered directly to the printed circuit board to provide extra heatsinking. It has a very small footprint and is compatible with standard automated surface mount assembly processes.
Pricing and Availability
The TPS56xx family will be on display for the first time at DSP World Spring Conference 1998, April 22-24 in Santa Clara, California. The TPS56xx devices are packaged in 28-pin thin shrink small outline packages (TSSOP). The first devices will be available in third quarter 1998 from Texas Instruments and its authorized distributors. Evaluation modules, demonstration boards and application notes will also be available.
Suggested resale pricing in quantities of 1,000 is $2.20.
More information of TI's power management products can be found on the World Wide Web at  http://www.ti.com/sc/docs/msp/power/default.htm
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PowerPAD is a trademark of Texas Instruments Incorporated.
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