Philips Electronics Australia Ltd

Philips Electronics Australia Ltd
Philips Hse
65 Epping Rd
North Ryde NSW 2113
Tel: 02 9947 0000
Fax: 02 9947 0580

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Power MOSFETS for backlight inverters

ROYAL Philips Electronics has released 150V and 200V power MOSFETs for use in backlight inverters in LCD TVs and monitors and high-pressure discharge lamp inverters for beamers and projection TVs.

They are fabricated using Philips' TrenchMOS technology. They combine fast switching speeds with low RDS(on) values, reducing switching and dc losses to the low levels required for high-efficiency inverter operation.

The cold cathode fluorescent lamp (CCFL) 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 provide the necessary high-speed current switching needed to generate these waveforms while minimising conversion losses and thereby easing thermal management problems.

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

Philips Electronics Australia Ltd News

Small 4-channel UARTs in HVQFN package (19-Oct-2005)
PHILIPS' range of advanced SC16C UARTs has been expanded with the release of the industry's smallest 4-channel devices. Now available in the ultra-compact, high-performance HVQFN package, they measure just 36mm², delivering board savings of as much as 90% compared with the industry's current smallest package size of 144mm².

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