Zetex' new driver family meets demands of next generation light-emitting diodes
"Zetex Semiconductors recently won the Greater China Business Award 2008 for the North West of England region."
(EMAILWIRE.COM, February 15, 2008 ) Zetex Semiconductors, a leading analog signal processing and power management solution provider, has introduced a family of three flexible light-emitting diodes (LED) drivers that provide designers with the performance needed by the next generation of high brightness LEDs. The ZXLD132X inductive DC-DC converter series drive single or multiple LEDs with currents from 700mA through to 1.5A, in buck, boost and buck/boost configurations. Housed in a tiny 3mm x 4mm DFN package, the drivers can reduce the circuit footprint of existing solutions by up to 50 per cent.
Employing an innovative variable 'on' and 'off' time control scheme with an adjustable peak switch current limit, the chips are significantly simpler to control than alternative pulse frequency modulation (PFM) solutions. The drivers also enable both LED current and peak inductor current to be set accurately and independently.
The ZXLD132X feedback control circuit ensures excellent load and current regulation, resulting in LED current stability of typically +/-3% throughout the useful life of the battery and over the extended operating temperature range of –40ºC to 125ºC. LED current can be adjusted from 100 per cent down to 10 per cent of preset value by applying a DC voltage signal and down to 2 per cent using a pulse width modulation (PWM) input.
The highly integrated ZXLD132X LED driver family also features a thermal control circuit that monitors an external thermistor in order to linearly reduce output current once temperature exceeds a predetermined threshold.
The device can also be shut down by applying a low-level DC voltage signal.
"The next generation of high brightness LEDs, such as Luxeon K2, require harder driving in order to maximise lumen output," said Patrick Durand, worldwide applications manager for Future Lighting Solutions. "These latest LED drivers from Zetex give designers the output current performance and importantly the ease of use that they've been waiting for."
"By combining the DC-DC converter, a current monitor for accurately stabilising the output current, the thermal control circuitry and a powerful 2A NPN switching transistor into a tiny DFN package, we have enabled our customers to maximise the Lumen output they get from the latest LED technology," said Patrick Wu, vice president, marketing at Zetex Asia.
At the head of the product family, the ZXLD1320 buck mode driver will deliver up to 1.5A continuous LED current for an input voltage range of 4V to 18V. Providing up to a maximum of 24W of power, depending on supply voltage and external component selection, the device will suit halogen lamp replacement and battery driven applications.
The ZXLD1321 is a boost mode driver operating with an input voltage range of 1V to 12V and delivers an LED current of 1A, while the ZXLD1322 is a buck/boost mode driver producing 700mA for an input voltage of 2.5V to 15V.
Both devices suit high power LED flashlight, LED back-up lighting and general LED driving applications.
Special note:
Zetex Semiconductors recently won the Greater China Business Award 2008 for the North West of England region. Organised by UK Trade & Investment (UKTI) and supported by the North West Regional Development Agency and the China-Britain Business Council, the award recognises companies that have made a significant contribution to developing business links with mainland China, Hong Kong and Taiwan.
About Zetex Semiconductors
Zetex Semiconductors designs and manufactures high-performance analogue semiconductors for a broad spectrum of applications, with a particular focus on LED lighting, audio and DBS applications. Its integrated and discrete semiconductor products offer compact, high efficiency power management and signal processing solutions which meet the demand for greater power efficiency, precision and speed in analog and digital circuit design.
The company is headquartered near Manchester in the UK and has design support, manufacturing and sales operations located throughout Asia, Europe and North America. Zetex employs more than 650 people worldwide and is the only UK quoted, vertically integrated silicon semiconductor manufacturer.
For more information visit www.zetex.com
About Future Lighting Solutions
Future Lighting Solutions is a division of Future Electronics Inc., the 3rd largest electronic distributor in the world. With over 7 years of experience, FLS is focused on delivering world-class LUXEON LEDs, technical solutions and commercial support that facilitate developing and manufacturing "never before possible" LUXEON LED based applications. For more information visit www.futurelightingsolutions.com.
Issued on behalf of Zetex (Asia) Ltd
by EBA Communications
For further information please contact:
Stanley Leung (Zetex): (852) 2610 7932
(email: sleung@zetex.com)
Andy Wong (EBA): (852) 2537 8022
(email: andy.wong@ebacomms.com)
###
This press release was issued through GroupWeb EmailWire.Com. For more information on press release distribution, go to http://www.emailwire.com .
Employing an innovative variable 'on' and 'off' time control scheme with an adjustable peak switch current limit, the chips are significantly simpler to control than alternative pulse frequency modulation (PFM) solutions. The drivers also enable both LED current and peak inductor current to be set accurately and independently.
The ZXLD132X feedback control circuit ensures excellent load and current regulation, resulting in LED current stability of typically +/-3% throughout the useful life of the battery and over the extended operating temperature range of –40ºC to 125ºC. LED current can be adjusted from 100 per cent down to 10 per cent of preset value by applying a DC voltage signal and down to 2 per cent using a pulse width modulation (PWM) input.
The highly integrated ZXLD132X LED driver family also features a thermal control circuit that monitors an external thermistor in order to linearly reduce output current once temperature exceeds a predetermined threshold.
The device can also be shut down by applying a low-level DC voltage signal.
"The next generation of high brightness LEDs, such as Luxeon K2, require harder driving in order to maximise lumen output," said Patrick Durand, worldwide applications manager for Future Lighting Solutions. "These latest LED drivers from Zetex give designers the output current performance and importantly the ease of use that they've been waiting for."
"By combining the DC-DC converter, a current monitor for accurately stabilising the output current, the thermal control circuitry and a powerful 2A NPN switching transistor into a tiny DFN package, we have enabled our customers to maximise the Lumen output they get from the latest LED technology," said Patrick Wu, vice president, marketing at Zetex Asia.
At the head of the product family, the ZXLD1320 buck mode driver will deliver up to 1.5A continuous LED current for an input voltage range of 4V to 18V. Providing up to a maximum of 24W of power, depending on supply voltage and external component selection, the device will suit halogen lamp replacement and battery driven applications.
The ZXLD1321 is a boost mode driver operating with an input voltage range of 1V to 12V and delivers an LED current of 1A, while the ZXLD1322 is a buck/boost mode driver producing 700mA for an input voltage of 2.5V to 15V.
Both devices suit high power LED flashlight, LED back-up lighting and general LED driving applications.
Special note:
Zetex Semiconductors recently won the Greater China Business Award 2008 for the North West of England region. Organised by UK Trade & Investment (UKTI) and supported by the North West Regional Development Agency and the China-Britain Business Council, the award recognises companies that have made a significant contribution to developing business links with mainland China, Hong Kong and Taiwan.
About Zetex Semiconductors
Zetex Semiconductors designs and manufactures high-performance analogue semiconductors for a broad spectrum of applications, with a particular focus on LED lighting, audio and DBS applications. Its integrated and discrete semiconductor products offer compact, high efficiency power management and signal processing solutions which meet the demand for greater power efficiency, precision and speed in analog and digital circuit design.
The company is headquartered near Manchester in the UK and has design support, manufacturing and sales operations located throughout Asia, Europe and North America. Zetex employs more than 650 people worldwide and is the only UK quoted, vertically integrated silicon semiconductor manufacturer.
For more information visit www.zetex.com
About Future Lighting Solutions
Future Lighting Solutions is a division of Future Electronics Inc., the 3rd largest electronic distributor in the world. With over 7 years of experience, FLS is focused on delivering world-class LUXEON LEDs, technical solutions and commercial support that facilitate developing and manufacturing "never before possible" LUXEON LED based applications. For more information visit www.futurelightingsolutions.com.
Issued on behalf of Zetex (Asia) Ltd
by EBA Communications
For further information please contact:
Stanley Leung (Zetex): (852) 2610 7932
(email: sleung@zetex.com)
Andy Wong (EBA): (852) 2537 8022
(email: andy.wong@ebacomms.com)
###
This press release was issued through GroupWeb EmailWire.Com. For more information on press release distribution, go to http://www.emailwire.com .
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Zetex Semiconductors Greater China Business Award North West of England region
Zetex Semiconductors Greater China Business Award North West of England region