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This application note presents a low-cost driver for LEDs that is compatible with TRIAC phase-control dimmers. The design gives luminaire manufacturers a low-cost, commonly available dimming option for home fixtures. A side benefit is that, when not wired to a dimmer, the unit's power factor is over 0.9. The design is based on the L6562A transitionmode PFC controller driving a single stage PFC-fl…View Design
* For Constant Current, the board must be modified as described on page 8 of the user guide. * Streetlight applications require that the power supply designed to power an LED lamp must have high efficiency and at least an equivalent lifetime in order to guarantee maintenance-free operation during the life of the LED.View Design
The VIPer22A is low cost monolithic smart power devices with integrated PWM controller designed to operate in the wide range input voltage, from 90 to 264Vac.
The VIPer22A internal control circuit offers benefit such as: automatic burst mode in low load condition, overvoltage protection in hiccup mode, and large voltage range on the VDD pin.
This isolated VIPer22A const…
The LM3450A evaluation board is designed to provide an AC to LED solution for a 30 W LED load.
Specifically, it takes an AC mains input and converts it to a constant current output of 700 mA for a series string of 1 to 13 LEDs (maximum LED stack voltage of 45 V). There are two assembly versions designed to operate from two different nominal AC input voltages, 120 VAC or 230 VAC.
The STEVAL-ILL066V1 evaluation board is a complete and configurable solution that efficiently controls a single dimmable high brightness LED string using the STLUX385A digital controller.
The LED efficiency is high during all stages of dimming and the STEVAL-ILL066V1 can achieve a 92% efficiency during full load while maintaining a low < 200 mW power consumption during idle period…
ICL8002G is a quasi-resonant PWM controller specially designed for high efficient offline LED driving application. It can be configured for different topologies such as flyback and buck converter. This document illustrates the ICL8002G in dimmable LED bulb application using the non-isolated buck topology. The ICL8002G IC’s quasi-resonant operation mode, precise cycle-by-cycle peak current control…View Design
This document is an engineering report describing a 0.5 W constant current LED driver power supply utilizing a LNK302P. This power supply is intended as a LED driver that can be used in emergence exit signs and neon light replacements.
The document contains the power supply specification, schematic, bill of materials, printed circuit layout, and performance data.
This engineering report describes a power supply utilizing the LinkSwitch-TN device LNK306PN in a buck-converter topology.
This power supply operates using input voltages ranging from 108 to 132 VAC. This ensures a DC bus voltage large enough to support a 70 V output. In a buck topology the output voltage is always smaller than the input voltage. The output voltage is limited by the …
This engineering report describes the design for a universal input, 22 V to 48 V, 180 mA LED driver. This power supply utilizes the LYT2004E device from the Power Integrations LYTSwitch-2 family.
This document contains the power supply and transformer specifications, schematics, bill of materials, and typical performance characteristics pertaining to this power supply.
This document describes a cost effective power supply utilizing the LYTSwitchTM-0 family (LYT0006D) in a highly compact buck topology.
This power supply operates over an input voltage range of 190 VAC to 265 VAC. The DC bus voltage is high enough to support 85 V output when using a buck topology. In a buck converter the output voltage must always be lower than the input voltage. The…