Philips Creates Power MOSFETs for LCD Backlight and Beamer Applications

11/22/2004 - Royal Philips Electronics (NYSE: PHG, AEX: PHI) announced the introduction of a new family of 150V and 200V power MOSFETs targeted for use in backlight inverters for LCD TVs and monitors, and UHP (Ultra High Pressure) discharge lamp inverters for beamers and projection TVs. Fabricated using Philips’ highly acclaimed TrenchMOS technology, these new power MOSFETs combine extremely fast switching speeds with extremely low RDS(on) values, thereby reducing switching and DC losses to the very low levels required for high efficiency inverter operation.

The CCFL (Cold Cathode Fluorescent Lamp) tubes used to backlight large-area LCD displays, and the UHP lamps used in projection TVs and beamers, need to be driven with carefully controlled high-voltage high-frequency AC waveforms in order to provide accurate brightness control without perceivable flicker. Power MOSFETs, such as those introduced today by Philips, provide the necessary high-speed current switching needed to generate these waveforms, while minimizing conversion losses and thereby easing thermal management problems.

“The ever-larger screen sizes being produced by the LCD and rear projection TV industries require correspondingly higher drive power for their backlighting,” said Manuel Frade, general manager, Philips Semiconductors power management business. “That makes it increasingly important to minimize power losses in the drive electronics.”

The initial range comprises 200V devices with an RDS(on) value of 65 mOhm and 150V devices with an RDS(on) value of 34 mOhm, all of which are available in industry standard TO220 or D2PAK packages. These transistors can be optimally driven by using them with Philips’ UBA20xx family of lighting control ICs, such as the UBA2032 full-bridge driver.

The devices are available now in quantities of 10K.

About Royal Philips Electronics
Royal Philips Electronics of the Netherlands (NYSE: PHG, AEX: PHI) is one of the world’s biggest electronics companies and Europe’s largest, with sales of EUR 29 billion in 2003. With activities in the three interlocking domains of healthcare, lifestyle and technology and 165,600 employees in more than 60 countries, it has market leadership positions in medical diagnostic imaging and patient monitoring, color television sets, electric shavers, lighting and silicon system solutions. News from Philips is located at

TrenchMOS is a trademark of Koninklijke Philips Electronics N. V.

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