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2010-05-19
Clare Introduces a New High-Voltage LED Driver with 8V to 550V Input Voltage Range and Greater than 90% Efficiency

April 15, 2010 – Beverly, Massachusetts, USA, Clare, Inc., an IXYS company (NASDAQ: IXYS – News) and world leader in the design and manufacture of high voltage, analog and mixed signal ICs, announces the immediate availability of the CPC9909 High-Voltage HB LED driver. The CPC9909 can drive from a few to hundreds of HB LEDs in-series and/or parallel combinations in a constant peak-current control topology. Manufactured using Clare’s 550V BCDMOS Silicon-On-Insulator (SOI) process, the CPC9909 operates directly off a rectified AC voltage supply, and does not require any additional low voltage supplies. LED brightness can be controlled via the pulse frequency modulation (PWM) input or the linear dimming input.

CPC9909’s PWM with a constant peak-current control scheme is inherently stable, allowing the driver to be operated above 50% duty cycle without loop instability or sub-harmonic oscillations. LED dimming can be implemented by applying a small DC voltage to the LD pin, or by applying a low frequency PWM signal to the PWMD pin.

\"The CPC9909 joins the expanding family of HVIC’s that our technologists have developed in our own proprietary high voltage SOI process, for power management applications. By enabling direct off AC line LED control, we bring cost effective solutions for expanding LED general lighting applications and especially for backlighting of large area LCD displays and TVs. The ease of dimming control with DC or PWM inputs allows for digital control using our specialized line of Zilog MCUs with on board PWM outputs,” commented Dr. Nathan Zommer CEO of IXYS Corporation.

The CPC9909 is well suited for a variety of solid state HB LED lighting applications such as flat-panel display RGB backlighting, signage, decorative, LED lighting, and DC/DC or AC/DC LED driver applications. The CPC9909N is fully RoHS compliant, and is available in a standard
8-lead SOIC package. The CPC9909NE is available in a thermally-enhanced (50°C/W thermal resistance, junction-to-ambient) 8-lead SOIC package for higher ambient or power applications.

More information please refer to http://www.clare.com/Newsroom/2010PR/PR_Apr152010.htm or contact Mr. Angus Feng  at Seraphim,Taiwan distributor of Clare, tel: 26984660 ext. 259 or email to angusfeng@seraphim.com.tw  

相關廠商:

IXYS Integrated Circuits Division Inc.(原Clare)


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