Product category: Power Supply ICs and Controllers
News Release from: NXP Semiconductors | Subject: UBA2074 and UBA2072
Edited by the Electronicstalk Editorial Team on 29 November 2007
Inverter controllers shed light on LCD
TVs
Controller ICs address the trend toward growing display sizes and the increased use of high-supply-voltage backlight inverter solutions in LCD-TV applications.
New from NXP, the high-voltage UBA2074 and the low-voltage UBA2072 are full-bridge fluorescent backlight controller ICs designed specifically to address the trend toward growing display sizes and supporting the increased use of high-supply-voltage backlight inverter solutions in LCD-TV applications In response to customer requests, the company will manufacture DC/AC inverter controller ICs to drive cold-cathode fluorescent lamps, CCFL, or external electrode fluorescent lamps in LCD backlighting applications to support displays of all sizes
This article was originally published on Electronicstalk on 23 Oct 2001 at 8.00am (UK)
Related stories
Fine-geometry process slims smart 32bit processor
HiPerSmart from Philips Semiconductors is the first 32bit smart computing platform to be manufactured using an advanced 0.18um CMOS process.
High security for smart card MCU family
Philips Semiconductors describes SmartMX as the world's first ultra-low-power cost-optimised high-performance family of smart card controller ICs.
The NXP UBA2074 is the industry's first, true high-voltage full bridge inverter controller IC, able to directly drive up to 550V supplied full bridges without the need of external level shifters or gate drive transformer constructions.
The ability to drive high voltage full-bridge inverter structures, meets the current and near future requirements of higher power, high and medium supply voltage full-bridge backlight inverter solutions.
The IC supports the continuously increasing LCD TV panel sizes and growing backlight power requirements and enables the creation of highly efficient high-power fluorescent backlight inverter designs on LCD-TV integrated power boards.
Further reading
Two decoders in one for double the set-top box
Philips Semiconductors says it has developed the world's first IC to embed two DVB-S/DSS channel decoders.
Extra bit boosts video decoder performance
Philips Semiconductors has released the SAA7115 9bit video decoder, with high-performance comb filter, enhanced Macrovision detection and advanced VBI data slicing capability.
Class D family provides single-chip audio
Philips Semiconductors has boosted the home audio market, launching a series of single-chip Class D audio amplifiers.
Meanwhile the UBA2072 is designed to operate over a wide low voltage inverter supply, ranging from 9 to 30V, matching the requirements of larger LCD monitors LIPS structures and classical 24V supplied LCD-TV backlight inverters.
"With the falling cost of LCD televisions, consumers are choosing increasingly larger LCD TVs, which require greater amounts of backlight power".
"This drives up the power requirements and cost of the LCD-TV power supply", says Kees Schetters, Marketing Director Business, Line Power Management, NXP Semiconductors.
"In addition, the LCD-TV market is extremely competitive, requiring an ever present focus on driving system cost down".
"One of the areas where large cost savings can be made is within the power management domain of an LCD TV.
This is achieved by moving from traditionally panel integrated 24V inverter solutions to set-level LCD-TV integrated power supply boards containing both the LCD-TV power supply as well as a high voltage supplied backlight inverter".
"This solution serves two goals as it increases the overall power efficiency of an LCD TV, and also drives down the total LCD-TV power management cost".
The end application of the UBA2074 is full-bridge high voltage and medium voltage LCD-TV fluorescent lamp, CCFL/EEFL, backlight inverters.
The UBA2074A, without hard switching protection, is targeted at 60V full-bridge, medium voltage backlight applications, whereas the UBA2074, with hard switching protection has its focus on 155 to 400V full-bridge high-voltage backlight applications.
The UBA2072 is very similar to the UBA2074, with the main difference that it has been designed specifically for a low voltage full bridge application limited to 30V.
The NXP UBA2072 and UBA2074 LCD backlight inverter controllers are available immediately.
• NXP Semiconductors: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
