Two New Monolithic DC-DC Converters From Toshiba Improve Power Efficiency in Step-Down Converter Applications

"Our latest generation step-down converters provide the small size and output flexibility needed for PCs, peripherals and digital consumer products, with high output current and improved power efficiency," said Jeff Lo, business development manager, power semiconductors, for TAEC.

The Toshiba step-down converters features adjustable output voltage and a selection of built in functions including synchronous rectification, under voltage protection, and adjustable soft start time. In internal testing, the TCV7101F achieved an efficiency improvement of approximately 4 percent compared to competitive products tested (1).

The 2.5A output TCV7100F and3.8A output TCV7101F each feature a 2.7V to 5.5V input range. The 2.5A device has typical switching frequency of 800 kHz, while the 3.8A TCV7101F has typical switching frequency of 600 KHz. The TCV7101F features a built-in driver for an external low side MOSFET to enable designers to select the external device most suitable for their design requirements. Both the TCV7100F and the TCV7101F utilize current mode PWM control and are packaged in small SOP Advance packages which measure 5mm x 6mm x 0.95mm and feature low thermal resistance.

    Technical Specifications and Features

                                                     Switching Phase
    Part                   Input    Output   Output  Frequency Compen-
    Number    Features     Vol-     Vol-     Current (typ.)    sation
                           tage(V)  tage(V) (max)(A) kHz       Circuit Package


    TCV7100F -Synchronous  2.7 to   Adjust-   2.5      800     Inter-    SOP
              Rectifier    5.5      able                       nal     Advance
             -Undervoltage
              protection
             -Adjustable
              soft start
              time

    TCV7101F -Synchronous  2.7 to   Adjust-   3.8      600     Inter-    SOP
              Rectifier    5.5      able                       nal     Advance
             -Undervoltage
              protection
             -Adjustable
              soft start
              time
             -Built-in
              low side
              external
              MOSFET
              drive

Pricing and Availability

Samples of the TCV7100F and TCV7101F single chip DC-DC converters are available now, priced at $0.70 and $0.75 each, respectively. The TCV7100F is in mass-production now and mass production for the TCV7101F is scheduled to begin in March 2008.

Toshiba's Discrete Products

Since 1986, Toshiba Corp. has ranked as the top discrete supplier on a worldwide basis, based on annual revenue from international shipments of total discrete products. According to the most recent annual report from market research firm Gartner Dataquest (San Jose, CA), Toshiba remained the top discrete semiconductor supplier. (Source: "2006 Worldwide Semiconductor Market Share Report," Gartner, released April 2007). More specifically, Toshiba is a leading supplier in a number of discrete product categories, including power transistors, rectifiers and thyristors, LMOS logic, CMOS logic, optoelectronics, small signal diodes and transistors. The company's discrete devices are designed to meet the growing demand for high-performance and lower voltages in today's wireless telecommunications and consumer electronics applications, while emphasizing its strength in the automotive and industrial markets.

*About TAEC

Through proven commitment, lasting relationships and advanced, reliable electronic components, Toshiba enables its customers to create market-leading designs. Toshiba is the heartbeat within product breakthroughs from OEMs, ODMs, CMs, distributions and fabless chip companies worldwide. A committed electronic components leader, Toshiba designs and manufactures high-quality flash memory-based storage solutions, discrete devices, displays, advanced materials, medical tubes, custom SoCs/ASICs, digital multimedia and imaging products, microcontrollers and wireless components that make possible today's leading cell phones, MP3 players, cameras, medical devices, automotive electronics and more.

Toshiba America Electronic Components, Inc. is an independent operating company owned by Toshiba America, Inc., a subsidiary of Toshiba Corporation, Japan's largest semiconductor manufacturer and the world's third largest semiconductor manufacturer (Gartner, 2007 WW Semiconductor Revenue Estimate, Dec. 2007). For additional company and product information, please visit http://www.toshiba.com/taec/.

Information in this press release, including product pricing and specifications, content of services and contact information, is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable Toshiba product specifications. In developing designs, please ensure that Toshiba products are used within specified operating ranges as set forth in the most recent Toshiba product specifications and the information set forth in Toshiba's "Handling Guide for Semiconductor Devices," or "Toshiba Semiconductor Reliability Handbook." This information is available at http://www.chips.toshiba.com, or from your TAEC representative.

    POWR 08 516

    (1) Test conditions VIN = 5.0V, VOUT= 3.3V, TA = 25 degrees C
    For TCV7101F, the external low side MOSFET used in testing was TPC6007-H.

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SOURCE Toshiba America Electronic Components, Inc.

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Copyright © 2008, NewsBlaze, Daily News

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