PAR20 PAR25 PAR30 LM3429 LM2842

Electronic Drive Solution for LED Bulb Applications Designing LED replacement bulbs typically requires four different design

Nuventix and National Semiconductor Thermal and Electronic Drive Solution for LED Bulb Applications Designing LED replacement bulbs typically requires four different design components: the LED, electronic drive, thermal, and optical solutions. Integrating these design components to provide an efficient and high performance LED replacement bulb can be challenging. National Semiconductor has developed an LED driver reference design to work with the Nuventix SynJet® LED cooling module. The National and Nuventix system incorporates the thermal and electronic drive solutions for LED replacement bulb applications. This reference design is ideal for any LED application that runs off of a 12V or 24V rail. Thermal Solution: The Nuventix SynJet LED Cooling Module · The Nuventix developed SynJet module is a synthetic jet cooling technology that utilizes turbulent pulses of air generated from an electromagnetic actuator to reliably and efficiently cool LEDs · The SynJet module serves as the cooling element for an LED luminaire or bulb replacement for the standard MR16, PAR20 PAR20, PAR25 PAR25, PAR30 PAR30 or PAR 38 form factors Figure 1. The Nuventix SynJet Cooling Module Electronic Drive Solution: The National Semiconductor LM3429 LM3429 LED Driver · The luminaire incorporating the Nuventix SynJet module also requires an electronic drive board to drive the LEDs and provide an appropriate voltage to drive the electromagnetic actuator The National Semiconductor electronic drive solution features: · The LM3429 LM3429 buck-boost LED driver: Allows input voltage capability of 9V-36V to accommodate 12V and 24V voltage rails for a variety of applications Drives 1-12 series connected LEDs up to 1A Enables analog dimming capability of 0 mA to 1A with a potentiometer or 1V to 10V dimming · The LM2842 LM2842 voltage regulator provides a regulated 5V power supply to the SynJet actuator Figure 2. SynJet MR16 Module with National Semiconductor's Electronic Drive Board Attached Nuventix and National Semiconductor Thermal and Electronic Drive Solution for LED Bulb Applications Figure 3. Close up view of the National Semiconductor LM3429 LM3429 LED driver and the LM2842 LM2842 voltage regulator sitting on top of a MR16 Nueventix SynJet® LED cooling module. National Semiconductor 2900 Semiconductor Drive Santa Clara, CA 95051 1 800 272 9959 Figure 4. MR16 LED retrofit bulb complete with a LED and a lens for a total end application solution Mailing address: PO Box 58090 Santa Clara, CA 95052 Visit our website at: national.com/led For more information, send email to: support@nsc.com For more information visit: national.com/led or www.nuventix.com © National Semiconductor Corporation, 2009. National Semiconductor and are registered trademarks of National Semiconductor. All other product names are trademark or registered trademarks of their respective holders. All rights reserved. 540121-001 540114-001