TI Stackable Controller Maximizes Power Density and Energy Performance in Data Centers and Telecom Systems

TI Stackable Controller Maximizes Power Density and Energy Performance in Data Centers and Telecom Systems

August 22, 2006

Flexible PWM Controller Enables Power Supplies to Easily Scale up to 320 A

    BEIJING, Aug. 22 /Xinhua-PRNewswire/ -- Texas
Instruments Incorporated (TI) (NYSE: TXN) introduced today
a highly flexible, power management integrated circuit (IC)
that turns power supplies in data centers and
telecommunications equipment into fully scalable, stackable
power systems with greater load-handling capability and
maximum efficiency.  See:  http://www.ti.com/tps40140-pr . 
  

    TI's TPS40140 synchronous, pulse-width modulation (PWM)
controller operates as a stand-alone device that generates
two outputs, or as a two-channel, multi-phase controller. 
Using the device's advanced capabilities, designers are now
able to "stack" multiple devices together to
create a high-density power supply that can generate up to
320 A of output current and support up to 16 phases.  In
addition, the system can maintain greater power efficiency
with today's power stage components. 

    Increased Power Efficiency for High-Density
Applications

    "Power supply designers for high-performance data
center and 3G base station applications face challenging
requirements for higher power density, scalability, and
high-efficiency operation," said Stephen Anderson,
vice president of TI's system power management business. 
"TI's new stackable controllers will enable customers
to meet those demands in an easy-to-use, modular
approach."

    In applications such as high-density telecom and
wireless systems, the TPS40140 significantly increases
load-handling capability and simplifies power system
design.  For 3G base stations driven by 1-GHz digital
signal processors (DSPs) like TI's new TMS320TCI6482, the
TPS40140 offers greater energy performance, low noise and
low power.  For data center servers, the controller gives
designers the opportunity to more easily develop a complete
multi-phase power system with high efficiency operation.

    Power Supply Flexibility and Performance

    The unique stacking capability of the TPS40140 enables
the power supply to perform automatic phase-balancing,
which significantly minimizes the ripple current in both
the output and input capacitors and allows an overall
smaller solution size.  Designers can also implement
topologies where multiple output rails based on multi-phase
and/or single-phase output topologies are both synchronized
and phase-balanced to achieve greater levels of power
density and flexibility while maintaining a uniform
electromagnetic interference (EMI) spectrum of frequencies.
  

    The TPS40140 current-mode controller supports a wide
input voltage conversion range of 2 V to 40 V, enabling
high-performance operation from a 4.5-V to 15-V power
source.  The device has excellent line and load regulation
of 0.1 percent, supported by a high-precision ¡À0.5
percent, 0.7-V voltage reference and high-accuracy
differential load sense amplifier. 

    The TPS40140 is equipped with complete supervisory and
control features for today's power supplies, including
pre-bias start-up capability, programmable under-voltage
lockout, lossless direct current resistance or resistor
current sensing, independent power good indicators,
separate soft start controls, synchronization input,
programmable over-current protection and thermal shutdown. 
In addition, the TPS40140 controller supports three common
sequencing schemes, including sequential sequencing,
ratio-metric sequencing and simultaneous sequencing.

    Availability, Packaging and Pricing

    The TPS40140 controller is available in volume from TI
and its authorized distributors. Packaged in a 6 mm x 6 mm,
36-pin QFN, suggested resale pricing is $3.30 each in
quantities of 1,000 units.  Software development tools for
the TPS40140 will be available in the fourth quarter of
2006 through TI's new Pro series of tools.  Evaluation
modules, application notes, reference designs and TI's
Power Management Selection Guide are available at
http://www.ti.com/tps40140-pr .  

    Power behind Your Designs

    TI is focused on meeting the power design needs of
customers through innovative products and technical
support.  TI leverages its analog and digital system
expertise and manufacturing capabilities to provide
high-performance, discrete and integrated power management
solutions to fit any portable, line-powered, isolated or
non-isolated power design challenge -- from cell phones and
PDAs to telecom, industrial and computing applications. 

    About Texas Instruments

    Texas Instruments Incorporated provides innovative DSP
and analog technologies to meet our customers' real world
signal processing requirements.  In addition to
Semiconductor, the company includes the Educational &
Productivity Solutions business.  TI is headquartered in
Dallas, Texas, and has manufacturing, design or sales
operations in more than 25 countries.

    Texas Instruments is traded on the New York Stock
Exchange under the symbol TXN.  More information is located
on the World Wide Web at:  http://www.ti.com .

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SOURCE  Texas Instruments Incorporated