For Immediate Release

For Further Information Contact:

Jeff Elliott, Power PR

P (310) 787-1940

F (310) 787-1970

BTCPower Introduces the Industry’s First 50 Amp Quarter Brick DC/DC Converter

Flat transformer technology allows BTCPower to offer higher current density quarter brick than Power One, Vicor, Tyco, Artesyn, Celestica, Ericsson, Synqor, and Di/Dt.

November 1, 2001- Broadband TelCom Power, Inc., (BTCPower) of Santa Ana, CA, is utilizing their patented flat transformer technology to redefine performance of the industry standard quarter brick (2.3” X 1.45” X .42”) by introducing the HQ series of synchronously rectified, high efficiency DC/DC converters, which provide 50 Amps of output current at low voltages – current density levels and conversion efficiency that, until now, have not been available in the power supply industry in the quarter brick form factor. BTCPower, known for redefining the limits of high current density power supplies, has already been credited with releasing the world’s first 30 Amp at 5Vdc quarter brick over a year ago, and is now offering the high efficiency 50 Amp HQ series for high-current, low-voltage applications that require a small footprint.

This new “best of class” quarter brick, answers the continued demand in the telecommunications and industrial arenas for smaller yet more robust DC/DC converters with lower voltage and higher current requirements. The HQ series, utilizing patented and patent pending technologies, offer a cost-efficient, open-frame synchronous rectification design capable of delivering up to 50A at 1.8Vdc and 1.5Vdc, 45A at 2.5Vdc and 40A at 3.3Vout.

The HQ Series has a 48V nominal input with an input-voltage range of 36Vdc to 75Vdc. The family of converters offers output voltages of 3.3V, 2.5V, 1.8V and 1.5V, with an output-voltage adjustment trim of +/-10 percent.

"With the HQ family, BTCPower is offering very high efficiency and superior performance in the industry-standard quarter brick format. The series will support customer’s existing and future applications by addressing the trend toward lower supply voltages and increasing load requirements," said James Lau, Chief Technical Officer at BTCPower. "The HQ Series have redefined the standard for high-current density DC/DC converters, thus enhancing BTCPower’s reputation for reliability and innovative technology."

The key to Broadband TelCom Power’s high-performance converters is the patented Flat Transformer Technology, which offer distinct advantages over conventional transformer technology. While conventional transformer technology utilizes a single core with multiple windings to achieve a voltage step-down ratio, Flat Transformer technology uses multiple cores with single windings. This patented technology is better suited to handle heat dissipation, thus allowing BTCPower to offer higher current density products than its competition, including Power One (PWER), Vicor (VICR), Tyco (TYC), Artesyn (ATSN), Celestica (CLS), Ericsson (ERICY), Synqor, and Di/Dt.

According to Mr. Lau, his company’s new quarter-brick series features multiple 6-mm Flat Transformer cores, which enable the high 50 Amp current density. “Everyone else’s quarter bricks have fewer or larger cores, which get too hot at 50 Amp output,” he says.

The flat matrix transformers also enable precise sharing of output current delivered by each of the multiple cores. In doing so, the synchronous rectifiers only need to rectify 12.5 Amps for a 50 Amp converter, reducing the losses by 4 times. This feature enables the HQ Series converters to maintain a very high efficiency even at these high output currents. In a typical high efficiency converter, the efficiency drops as the output current increases in proportion to the square of the current, but the HQ does not exhibit this deficiency due to the splitting of the output currents by the use of multiple cores before the rectification stage.

The HQ Series design makes use of a symmetrical push pull topology with a very efficient lossless snubbing network that takes advantage of the low leakage inductance of the matrix transformers.

Other features of the HQ Series include remote on/off, remote-output voltage sensing, tightly regulated output voltages, over-temperature protection, output overcurrent protection, overvoltage protection and input undervoltage protection. The module is designed to meet requirements for basic insulation.

Samples of the 3.3V, 2.5V, 1.8V and 1.5V versions are available to strategic customers in mid-November. The modules are priced at $95.00 in 1,000-unit quantities.

For more information about the HQ Series of DC/DC converters, contact Broadband TelCom Power, Inc. at 1719 S. Grand Avenue, Santa Ana, CA 92705; call them at (714) 259-4888 or visit their web site at www.btcpower.com.

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