Siliconix's New Low-Side 30-V Power MOSFET and Companion High-Side Device Provide Industry-Best Specifications for High Efficiency in dc-to-dc Conversion Applications
SANTA CLARA, Calif.--(BUSINESS WIRE)--March 4, 2002--A new milestone in optimizing MOSFETs for core voltage dc-to-dc power conversion was reached today with the release of two advanced LITTLE FOOT devices by Siliconix incorporated (NASDAQ: SILI), an 80.4 percent-owned subsidiary of Vishay Intertechnology Inc. (NYSE: VSH).
Latest in the Vishay Siliconix portfolio of constantly improving solutions for dc-to-dc converters, the new devices are a synchronous low-side power MOSFET (Si4362DY) and a control high-side power MOSFET (Si4892DY) that will deliver industry-best performance when used together in single or multiphase power supply circuits for notebook computers and game stations.
By key figures of merit, the new devices represent an improvement over previous-generation MOSFETs used for dc-to-dc conversion applications.
With an exceptionally low on-resistance rating of 6.25 milliohms at a 4.5-V gate drive -- 17 percent lower than competing devices -- the new Si4362DY is optimized for low-side operation, reducing conduction losses and thus boosting efficiency.
Optimized for high-side operation, the Vishay Siliconix Si4892DY features a very low typical gate charge of 8.7 nC, minimizing switching losses, and on-resistance of 20 milliohms at a 4.5-V gate drive.
The new low-side Si4362DY also features a gate-drain-to-gate-source charge ratio of 0.6 -- 25 percent better than competing devices -- and a very low gate resistance of 1.3 ohms, both characteristics that help to prevent "shoot-through" conditions in which the high- and low-side MOSFETs are on, creating a short from the input voltage to ground.
Improving on it predecessor, the Si4894DY, the new Si4892DY features a lower gate resistance of 1 ohm, a 30 percent better on-resistance times gate charge product of 139.2 and faster turn-on times. The device's low switching losses and higher speeds combine to provide higher efficiency control.
Working together, the two 30-V MOSFETs provide increased efficiency, longer run times, and cooler operation for portable computers and game consoles. The new devices' low gate-drain-to-gate-source charge ratio will allow designers to incorporate less-expensive MOSFET drivers into end products, further reducing component costs.
Samples and production quantities of the Si4362DY and Si4892DR, both in the SO-8 package, are available now with lead times of six to eight weeks for larger orders.
Siliconix is a leading manufacturer of power MOSFETs, power ICs, and analog switches for computers, cell phones, fixed communications networks, automobiles, and other electronic systems.
With 2001 worldwide sales of $305.6 million, the company's facilities include a Class 1, six-inch wafer fab dedicated to the manufacture of power products in Santa Clara, Calif., and an affiliated Class 1, six-inch wafer fab located in Itzehoe, Germany. Power products are also manufactured by a subcontractor in Japan.
Analog switches, analog multiplexers, and low-power transistors are fabricated by subcontractors in Dresden, Germany and in Beijing, China. Assembly and test facilities include a company-owned facility in Taiwan, a joint venture in Shanghai, China, and subcontractors in the Philippines, China, and the United States.
Vishay, a Fortune 1000 company listed on the NYSE, is the largest U.S. and European manufacturer of passive electronic components (resistors, capacitors, inductors) and is the No. 2 manufacturer of discrete semiconductors worldwide. The company's components can be found in products manufactured in a very broad range of industries worldwide.
With headquarters in Malvern, Pa., Vishay employs over 20,000 people in over 70 plants in 14 countries. Vishay can be found on the Internet at vishay.com.
LITTLE FOOT is a registered trademark of Siliconix incorporated.
CONTACT:
Vishay Siliconix
Swapan Banerjee, 408/970-5569
swapan.banerjee@vishay.com
or
Wall Street Communications
Bob Decker, 415/409-0233
bob.decker@wallstcom.com
KEYWORD: CALIFORNIA PENNSYLVANIA CHINA GERMANY INTERNATIONAL ASIA
ACIFIC EUROPE
BW0329 MAR 04,2002
10:38 PACIFIC
13:38 EASTERN |
