Products, Materials & Tools | Apr 22, 2011

NXP’s Solid State Lighting Solutions Bring New Levels of Efficiency to Industrial, Warehouse and Street Light Applications

NXP Semiconductors N.V. announced an addition to its broad GreenChip™ SSL family of products, the GreenChip SSL4101T controller IC, which offers new levels of professional-grade performance for Solid State LED lighting power supplies. The GreenChip SSL4101T enables LED lighting for medium to high power commercial and professional applications with industry-leading performance in Total Harmonic Distortion (THD) of less than 20 percent, a high Power Factor (PF) of .99, and high efficiency of 94 percent.

• The device can be used in all LED lighting applications that require:
   - very efficient, low THD
   - high PF
   - true universal input voltage
   - cost-effective power supply solution between 10 W and 300 W

Features and Benefits:
• Integrated PFC and flyback controller
• True universal mains supply operation: 70 V (AC) to 305 V (AC)
• High level of integration, resulting in a:
   - very low external component count
   - cost-effective design
• On-chip start-up current source
• Valley/zero voltage switching for minimum switching losses
• Frequency limitation to reduce switching losses
• PFC is switched off when a low load is detected at the flyback output
• Valley switching for minimum switching losses
• Frequency reduction with fixed minimum peak current at low power operation
• Safe restart mode for system fault conditions
• Continuous mode protection by means of demagnetization detection
• UnderVoltage Protection (UVP) (foldback during overload)
• Accurate OverVoltage Protection (OVP) for both converters
• Open control loop protection for both converters
• IC overtemperature protection
• Low and adjustable OverCurrent Protection (OCP)
• General purpose input for latched protection

“Today’s LED luminaire manufacturers are demanding increased power supply efficiency at lower costs in order to address new LED application segments,” said Jacques Le Berre, director of marketing and business development, lighting solutions, NXP Semiconductors. “GreenChip technology lies at the heart of NXP’s cost-effective, highly-efficient power and lighting ICs. The newly announced GreenChip SSL4101T offers a professional-grade solution with levels of efficiency of up to 94 percent, which is enabling LED adoption into a wider-range of professional lighting applications such as high bay and low bay lighting found in warehouses; and street lighting, where brightness and dependable illumination are essential.”

The GreenChip SSL4101T is based on NXP’s unique high voltage process and enables direct start-up from the rectified universal mains voltage in an effective, eco-friendly way. The multi-chip module contains both a flyback controller and a controller for Power Factor Correction, and provides high efficiency at all power levels. The new GreenChip SSL4101T is ideally suited for LED lighting applications that require a very efficient, low THD, high PF, true universal input voltage and cost-effective power supply solution ranging between 10 W and 300 W.

The GreenChip SSL4101T will be available in April 2011. Pricing starts at US $3.60 per piece. Further information on the GreenChip SSL4101T is available at:

About NXP Semiconductors:
NXP Semiconductors N.V. (Nasdaq: NXPI) provides High Performance Mixed Signal and Standard Product solutions that leverage its leading RF, Analog, Power Management, Interface, Security and Digital Processing expertise. These innovations are used in a wide range of automotive, identification, wireless infrastructure, lighting, industrial, mobile, consumer and computing applications. A global semiconductor company with operations in more than 30 countries, NXP posted revenue of $4.4 billion in 2010. For more information visit


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