UBA3070 LED driver IC with Boundary Conduction Mode
Strategies in Light Europe
September 18-20, 2012
NXP will be presenting on wired and wireless smart lighting
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Non-dimmable SSL2115x series to drive energy-efficient LEDs
The new SSL21151 and SSL21153 are designed for non-dimmable 5W and 10W LED lamps respectively, providing good current control in flyback and buck-boost configurations. The SSL2115x enables small form-factor LED drivers, using primary-side sensing to regulate current, and offering integrated LED open/short protections, an internal 700V MOSFET, and a circuit enabling start-up directly from the rectified mains voltage. With the use of an additional valley fill circuit, the SSL2115x series can offer a power factor of approximately 0.9. Read more: SSL21151 > SSL21153 >
NXP in the News
The development of targeted driver solutions, optimized for specific LED applications, is helping designers increase efficiency, save time, and reduce cost in residential and industrial markets.
The LED driver is a critical part of lamp
performance, impacting everything from brightness and dimmability to
power efficiency and long-term reliability and safety. The choice
of one driver over another is influenced by the application,
since a recessed ceiling fixture is very different from a street
lamp. NXP Semiconductors offers a series of tailored driver solutions, optimized for specific industrial and residential applications, that help designers increase efficiency, save time, and reduce cost.
For power levels above 25W, the SSL4101 driver offers excellent power factor (PF) and total harmonic distortion (THD) performance, even for universal mains. When used with the TEA1761 synchronous rectifier, the SSL4101 delivers exceptionally high efficiency, and produces a cost-optimized
solution for street lighting, parking garages, area lighting,
high- and low-bay lighting, warehouse interiors, and more.
For lower-power residential applications, the SSL2108x/9 are highly integrated, compact drivers that support small, nondimmable
retrofit lamps. The SSL2101/2/3, for replacement lamps that use mains dimming, are compatible with existing triac and transistor dimming
units and are among the first to use exponential dimming.
NXP supports these drivers with a wide selection of detailed
application notes and design guides, as well as reference
designs. A free online design tool, developed by NXP, saves
even more time, by generating a schematic, a bill of materials, and transformer parameters, and by calculating the design's efficiency and losses.
NXP helps designers use the residential drivers in smart lighting networks, with a complete hardware/software solution that enables IP connectivity. Every light has its own IP address and can be controlled by a smartphone, tablet, or PC. The solution is 2.4-GHz IEEE 802.15.4 compliant, delivers low operating power and low sleep current, and uses a mesh network that eliminates the need for direct line of sight to the wall socket. This lets the network include interior and exterior lights, and makes it suitable for use in larger-scale applications such as parking garages.
NXP's purpose-built driver solutions reflect decades of experience in lighting applications of all kinds, and build on our long-standing partnerships with leaders in the lighting industry. We have dedicated design teams just for lighting, and supply drivers that meet global requirements.
As LED applications continue to evolve, so will our drivers. We are still in the early days of this technology, so next generation drivers can be expected to deliver even higher performance at an even lower cost.
Reference Design Boards
SSL2109DB01 - 230 V 23 W Buck reference design
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SSL2109DB02 - 120 V 19 W Buck reference design
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