Product category: Discrete Power Devices
News Release from: NXP Semiconductors | Subject: 150 and 200V power MOSFETs
Edited by the Electronicstalk Editorial Team on 17 November 2004
MOSFETs set to shine
Philips has a new family of 150 and 200V power MOSFETs targeted for use in backlight inverters for LCD TVs and monitors, and UHP discharge lamp inverters for beamers and projection TVs.
Philips has a new family of 150 and 200V power MOSFETs targeted for use in backlight inverters for LCD TVs and monitors, and UHP (ultrahigh 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 on-resistance values, thereby reducing switching and DC losses to the very low levels required for high efficiency inverter operation
This article was originally published on Electronicstalk on 23 Oct 2001 at 8.00am (UK)
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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 minimising 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 minimise power losses in the drive electronics".
The initial range comprises 200V devices with an on-resistance value of 65mohm and 150V devices with an on-resistance value of 34mohm, 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.
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