Other led lamp circuits can be seen at fcs solar circuits. The lm3699 is a threestring, highefficiency, pwmcontrolled power source for display backlight or keypad leds in smartphone handsets. A highefficiency dimmable led driver for lowpower lighting. Lp8555yfqr highefficiency led backlight driver for. Led driver ic analog devices has a very broad line of led driver ics for automotive, display backlighting, handheld, and general highpower lighting applications. Hanleyled power supplies are built of premium quality components to ensure the longevity of your leds. The he series consists of constant current onoff drivers, and will be later fulfilled with controllable dali2 certified drivers. Constant current led driver switch mode part 3 ecprojects duration. A wide variety of high efficiency led driver options are available to you, there are 935 suppliers who sells high efficiency led driver on, mainly located in asia. Al8807b high efficiency pwm dim buck led driver diodes inc.
The energy efficiency of leds has increased substantially since the first general illumination products came to market, with currently available lamps and luminaires having efficacies more than three times as high as the best products from 2005. Members of this portfolio include i2ccompatible programming interfaces, with compact, high efficiency features suited. Mps offers robust, cost effective led drivers to address all types of automotive lighting needs, from headlamp to tail lights and everything inside. This fact sheet discusses current and projected benchmarks for the efficacy of led packages. Ild6150 is a hysteretic buck driver ic for use in general led lighting applications with average currents up to 1. Moso dimmable ldp 200w family offers 200w high efficiency power supply programmable design, which efficicency up to 93% to contribute to increasing the energy savings and co2 reductions. This wide input operating voltage range enables the driver to be used in a broad range of hb led applications. Analog devices stepup boost led drivers provide current control of multiple leds and support for high brightness led lighting, large format led backlighting, cameraenabled smart devices, and a range of related applications. They are configured as either inductorless charge pump or switching regulatorbased led drivers that support driving white leds in series, parallel or combination. Once this voltage is reached, current will increase very rapidly with voltage, limited only by the leds small resistance. The ilb cp10 he from iota engineering is a ul listed led emergency driver for field or factory installation that allows the same led fixture to be used for both normal and emergency operation. It integrates a currentmode boost converter with internal power switch and four current sinks. High efficiency led drivers helvars highefficiency nonisolated led drivers are designed to consume less energy and bring cost savings for applications where powerful light output is needed.
The boost converter can drive up to 48 leds, 12 leds per string, at 80 ma. With the ctrl pin folding back the led current at low input, startup is not harsh and inrush currents do not affect the high power factor. Ild6150ild6070 60v buck led driver ic with high accuracy. He series high performance, low consumption this new high efficient, nonisolated led driver range results in high energy efficiency, offering various drivers from 35w to 65w with wide operational windows. High efficiency charge pump white led driver a8435 for existing customer transition, and for new customers or new applications, contact allegro sales. When driving multiple leds in a single string, efficiencies greater than 95% may be attained together with very accurate led current matching. A highefficiency stepdown led driver for fire alarms. Lp8556 snvs871l july 2012revised may 2019 lp8556 highefficiency led backlight driver for tablets 1 1 features 1 highefficiency dcdc boost converter with integrated 0. High efficiency backlight led driver general description the rt4501a is a highefficiency led driver for backlight applications. L99ld01 is a precise constant current dc dc converter led driver for automotive applications, dedicated to the control of highbrightness led headlights an housed in a lqfp32 package. The mic28602p is a high efficiency white led wled driver designed to drive two wleds and greatly extend battery life for portable display backlighting, and keypad backlighting in low cost mobile devices. Most drivers integrate fiexible dimming modes and fault detection features, and come in compact packages to help designers achieve exotic new lighting form factors. Automotive day time running light, led headlamps description l99ld01 is a precise constant current dcdc converter led driver for automotive applications, dedicated to the control of highbrightness led headlights and housed in a lqfp32 package.
These drivers are ideal for class i linear luminaires, but can also be used in class ii luminaires. Rt8487 is a boundary mode, high efficiency constant current controller with internal high side driver, which can be used in buck and buckboost configuration, to provide a constant output current to the led load. This device is in production, however, it has been deemed preend of life. The led brightness is directly related to the applied current. The led sinks can be paralleled together to achieve even higher led currents, up to 320 ma. The highefficiency led driver for visible light communication applications article pdf available in scientific reports 6.
Increase led driver efficiency without a sense resistor magazine seeking to improve driver efficiency for portable power applications, chris glaser and jim chen explain a voltageregulation technique known as highside sensing, which eliminates the lossy sense resistor component by relying on a mosfet. Ilb cp10 he emergency driver 10 watt constant power, high efficiency led emergency driver for ca title 20 by iota. Highefficiency led driver for street light applications abstract. High efficiency bcm led driver controller for high power. White led driver, high efficiency, charge pump converter. An asynchronous boost converter with an internal schottky diode and a current source driver are designed to support 6ledchannel with wide input voltage range from 2. More specifically, the present invention relates to a high efficiency led light emitting diode driver. Led driver 840w high efficiency power supply ac 176v. Jul 21, 2009 a highefficiency dimmable led driver for lowpower lighting applications abstract. L99ld01 is a precise constant current dcdc converter led driver for automotive applications, dedicated to the control of highbrightness led headlights an housed in a lqfp32 package. This paper presents a dimmable light emitting diode led driver with adaptive feedback control for lowpower lighting applications.
It not only offers advantage of high efficiency but also great potential in lighting market. Pdf a highefficiency dimmable led driver for lowpower. Monolithic highefficiency led drivers stmicroelectronics offers monolithic led matrix drivers and stepdown currentsource converters stmicroelectronics led6001 device is an led driver that combines a boost controller and a highside currentsensing circuitry optimized for driving one string of highbrightness leds. Led driver, high efficiency, single stage, power factor corrected datasheet. In this paper, a novel singlestage parallel topology power circuit is presented. Highefficiency led driver for street light applications. Nov 14, 2012 high efficiency led driver for street light applications abstract. These ics meet the wide range of voltage requirements and can decrease design complexity, lower billofmaterial bom costs and improve power efficiency. Led driver 824w high efficiency power supply ac 176v265v. Cpc9909 is a low cost, highefficiency, offline, highbrightness hb led driver manufactured using our high voltage bcdmos on soi process. An led requires a minimum voltage before it will turn on at all.
The ncl30001 is a switch mode power supply controller intended for medium to high power single stage power factor pf corrected isolated flyback led drivers. L99ld01 high efficiency constant current led driver. The default constant current output mode is buckboost, but with a simple change in wiring this driver can run in boostonly mode as well. Highefficiency, twochannel wled driver with pwm control. It can be used in led street lights for widely power range, from 80 w to 300 w. The 24vac pulsating led driver converter in figure 1 delivers approximately 60w of led lighting at 94% efficiency. The perfect choice for under cabinet lighting, kickcove lighting, and m. This voltage varies with the type of led, but is typically in the neighborhood of 1.
The device can drive up to 9 leds, depending on the forward voltage of the leds, in series from a voltage source of 6v to 36v. Dimmable high efficiency waterproof led power supply. The highvoltage inductive boost converter with integrated 1a, 40v mosfet provides the power for three series led strings. High power offline power factored corrected led driver rev.
Efficiency is not less than 93% in 12v system, and not less than 95% in 24v system. As a result, a led driver with high data rate and high efficiency has been realized. Diodes family of led drivers provides highefficiency constant current drive for high brightness leds both high and low current. The device is designed to be used in boost, buckboost and fly back converter topologies. First highefficiency, highpower led driver that enables rapid transient response, accurate led current regulation, pwm and analog dimming.
It has 12 high precision current sinks that can be controlled by a pwm input signal, an i 2 c master, or both. Analog devices has a very broad line of led driver ics for automotive, display backlighting, handheld, and general highpower lighting applications. Led driver 824w high efficiency power supply ac 176v265v for ceiling lam hi. Lp8556 highefficiency led backlight driver for tablets. The top countries of suppliers are china, hong kong s. Halogen bulbs replacement needs high efficiency led drivers. The lm3699 is a threestring, high efficiency, pwmcontrolled power source for display backlight or keypad leds in smartphone handsets. Pdf the highefficiency led driver for visible light. It contains special circuitry for achieving high power factor and. Comparison between the proposed design and stateoftheart works is tabulated in table 1. Led drivers automotive mps monolithic power systems. Monolithic high efficiency led drivers stmicroelectronics offers monolithic led matrix drivers and stepdown currentsource converters stmicroelectronics led6001 device is an led driver that combines a boost controller and a high side currentsensing circuitry optimized for driving one string of high brightness leds.
The max1561max1599 stepup converters drive up to six white leds with a constant current to provide backlight in cell phones, pdas, and other handheld devices. Max1561 highefficiency, 26v stepup converters for two to. Designed with ip68 waterproof rating for use in a variety of conditions. Highpower density design, small volume and easy installation power drivenfilter using longlife metalized thinfilm capacitor to assure life span of led driver. High efficiency constant current led driver for automotive. The lp8555 is a high efficiency led driver with integrated dual dcdc boost converters. Prior art it is well known that leds and driver circuits that charge them with electrical energy.
A highefficiency dimmable led driver for lowpower lighting applications article pdf available in ieee transactions on industrial electronics 572. Once this voltage is reached, current will increase very rapidly with voltage, limited only by the led s small resistance. The mic28602p architecture provides the highest possible efficiency by eliminating switching losses present in traditional charge. Increase led driver efficiency without a sense resistor. Diodes incorporated al8807b high efficiency pwm dimmable buck led driver is a stepdown dcdc converter designed to drive leds with a constant current. Dc powered led lighting circuits can vary from trivial single leds with series resistors and leds with simple analog current regulators to more complicated switching power supply circuits such as this project. Please check latest availability status for a specific part variant. High power density design, small volume and easy installation power drivenfilter using longlife metalized thinfilm capacitor to assure life span of led driver.
The luxdrive a011 series flexblock is a dualmode boosting led power solution for driving highbrightness leds. The stepup converter topology allows series connection of the white leds so the led curr. Increase led driver efficiency without a sense resistor magazine seeking to improve driver efficiency for portable power applications, chris glaser and jim chen explain a voltageregulation technique known as high side sensing, which eliminates the lossy sense resistor component by relying on a mosfet. Most drivers integrate fiexible dimming modes and fault detection features, and come in compact packages to help designers achieve exotic new.
A highefficiency dimmable led driver for lowpower lighting applications abstract. High efficiency backlight led driver general description the rt4501a is a high efficiency led driver for backlight applications. Ilb cp10 he emergency driver 10 watt constant power, high. The aflex series of constant current programmable led drivers offers high efficiency, smooth flickerfree dimming and dim to off capability an extremely compact, low profile aluminum case less than 1 in height. High efficiency charge pump converter white led driver rev. This driver has an internal regulator that allows it to operate from 8vdc to 550vdc.
For the vlc technology, switching type led driver is a general structure. The high voltage inductive boost converter with integrated 1a, 40v mosfet provides the power for three series led strings. The a8521 is a multioutput white led driver for smallsize lcd backlighting. Monolithic highefficiency led drivers stmicro digikey. It employs a continuous conduction mode ccm control technique to ensure near unity power factor across a wide range of input voltages and output power.
530 84 1300 1440 1267 102 781 1219 363 1308 1252 743 1524 1588 1567 949 481 1540 1448 1171 538 374 605 695 422 13 333 479 490 776 828 597