TI Introduces 2.25-MHz Dual-Output DC/DC Converters with Digital Control

TI Introduces 2.25-MHz Dual-Output DC/DC Converters with Digital Control

June 09, 2006

High Efficiency Step-Down Converters with One-Pin EasyScale(TM) Interface Enable Dynamic Voltage Scaling in Portable Electronics

    DALLAS, June 9 /Xinhua-PRNewswire/ -- Texas Instruments
Incorporated (TI) (NYSE: TXN) introduced today two
dual-output, step-down DC/DC converters with a patented
one-pin serial interface technology that allows simple
digital voltage scaling.  The 95-percent efficient,
2.25-Mhz devices help extend battery life in cell phones,
portable media players and other portable electronics, as
well as portable industrial and medical equipment. See: 
http://www.ti.com/sc06110 .  

    TI's new TPS62400 synchronous, dual-channel switcher
with integrated FET technology supports up to 400mA of
output current on the first output and up to 600 mA on the
second output over an input voltage range of 2.5 V to 6 V. 
The converter features TI's one-pin EasyScale(TM) serial
interface, which allows the device to adjust the output
voltage dynamically during operation. The patented feature
allows the TPS62400 to support dynamic voltage scaling when
powering TI's TMS320C5000(TM) digital signal processors
(DSPs) and OMAP(TM) processors used in smart phones, PDAs
and other portable equipment.   

    In addition to the TPS62400, TI introduced the TPS62420
dual step-down converter, optimized for portable industrial
and medical equipment that deliver up to 600 mA on the
first output and up to 1,000 mA on second output. Both
devices operate in a power-save mode at light-load currents
and can be placed in a shutdown mode that reduces the power
consumption to less than 1.2 ¦ÌA. 

    Single-Chip Power Solution 

    The TPS62400 and TPS62420 save valuable board space,
while providing extremely efficient power conversion
without the need for external compensation. To save board
space, each device comes in a small, 10-pin 3 mm x 3 mm QFN
package, and a 2.25-MHz fixed frequency allows a portable
designer to implement small inductors and capacitors.

    Key Features of the TPS62400/420:

    * 95 Percent Efficiency at 2.25-MHz Operation
    * Input Voltage Range from 2.5 V to 6 V
    * Dual-Output Current 400 mA and 600 mA
    * Adjustable Output Voltage from 0.6 V to Vin
    * One-Pin EasyScale(TM) Serial Interface for Dynamic
Output Voltage Adjustment
    * 32-¦ÌA Typical Quiescent Current
    * Power Save Mode at Light Load Currents
    * 180¡ã Out-of-Phase Operation
    * One Percent Output Voltage Accuracy in PWM Mode  

    Available Today

    The TPS62400 and TPS62420 is currently shipping in
volume production.  Suggested retail pricing is $2.70 in
1,000-piece quantities. Evaluation modules of the devices,
application notes and TI's comprehensive portfolio of power
management ICs are available through http://power.ti.com . 

    About Texas Instruments

    Texas Instruments Incorporated provides innovative DSP
and analog technologies to meet our customers' real world
signal processing requirements. 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 .

    Please refer all reader inquiries to:  Texas
Instruments Incorporated
                                           Semiconductor
Group, SC-06110
                                           Literature
Response Center
                                           14950 FAA Blvd.
                                           Fort Worth, TX 
76155
                                           1-800-477-8924

    Trademarks

    EasyScale, TMS320C5000 and OMAP are trademarks of Texas
Instruments. All registered trademarks and other trademarks
belong to their respective owners.

    For more information, please contact:

     Matt McKinney	
     Texas Instruments	
     Tel:   [phone]		
     Email: [e-mail]

     Jacqi Moore		
     GolinHarris		
     Tel:   [phone]		
     Email: [e-mail] 

SOURCE  Texas Instruments Incorporated