Cat4101 1 a constantcurrent led driver with pwm dimming description the cat4101 is a constant. Find pfc led drivers related suppliers, manufacturers, products and specifications on globalspec a trusted source of pfc led drivers information. An1059, design equations of highpowerfactor flyback converters based on the. Energyefficient solutions for offline led lighting offline led driver solutions featuresbenefits system evaluation boards and tools general illumination applications residential lighting commercial lighting architectural and decorative lighting street lighting and public illumination emergency lighting.
Energyefficient solutions for offline led lighting and. The zsls7031 is a primaryside controlled, peakcurrentmode highbrightness led flyback driver that supports bothisolated and nonisolated designs with active power factor correction pfc. In these years, power leds for lighting is quite hot application. The fl7930c is an active power factor correction pfc controller for boost pfc applications that operate in critical conduction mode crm. The lowcost l6562a and the simple flyback topology combine to provide a very competitive pfc controller solution. This driver board or regular general power ev board provides 3 separate voltage outputs vled1, 25v600ma, vled2, 12v400ma. Evl6562a35wflb stmicroelectronics demonstration board. Flyback converters with the l6561 pfc controller by c. Led driver is specific smps 25w flyback led driver based on the l6562a with two dimmable strings demonstration board.
Energyefficient solutions for offline led lighting offline led driver solutions. Each module can contain 5 to leds, with each current channel set to 350ma. Al6562ev1 user guide universal input high pfc par38 led driver. Transformer design single stage high power factor flyback converters must draw predominately sineshaped current to maintain high power factor. Evl6562a400w l6562a 400w fotcontrolled pfc preregulator evaluation board. The excellent performance of the device, along with its characteristics in terms of low current con. Lt3799 offline isolated flyback led controller with active pfc. It requires no inductor, provides a low noise operation and minimizes the number of components. Singlestage flyback and boundarymode pfc controller for lighting. Gattavari the l6561, controller specifically designed for power factor correction pfc circuits, may be successfully used in flybackconvertersas well. The main feature of this converter is that the input current is. Significant improved driver efficiency, up to 90%, compared to other conventional solutions. Michael weirich, the global power resourcesm center gprc europe.
Singlestage flyback and pfc controller for led lighting. A high power factor flyback with constantcurrent output for led lighting applications. The l6562a is a current mode pfc controller operating in transition mode boundary mode between ccm and dcm. The lowcost l6562a and the simple flyback topology. The controller used is l6562a transition mode pfc controller by st microelectronics. It is possible to choose between automatic colour change mode or manual colour adjustment mode. High brightness led driver monochromatic or rgb, power factor corrected demo board. Der350 20 w, isolated flyback, triac dimmable, pfc 0. Triac dimmable flyback led driver with pfc for a19. A high power factor flyback with constant current output.
This allows designers to cover a wide range of different led systems using a single topology. Evl6562a400w l6562a 400w fotcontrolled pfc preregulator evaluation board evl6562a35wflb 35w wide range high power factor flyback converter using the l6562a stevalill0v1 80 w offline pfc and led driver demonstration board with dimming based on the l6562a evl6562a led constant current inverse buck led driver using l6562a. If you get really good mosfets, it might be even possible to run your zvs flyback driver infinitely. The stevalill043v1 demonstration board is a highpf flyback configuration in order to drive a new design of the 75 w led array based on the l6562a controller, with a much reduced bom cost. Application report 90w single stage pfcflyback using l6562a for led driver introduction. The l6562a is a pfc controller operating in transitionmode. This design operates an input voltage ranging from 190 vac to 265 vac and provides an output of 24 v at 500 ma continuous.
An stmicroelectronics patent application is pending for the method for dimming an offline led driver by means of a triac based dimmer as described in this document. Unlike the simple 555 timer flyback drivers, the zvs flyback drivers will allow you to run your flyback transformers for much longer periods of time before the mosfets overheat. Tps92310 220vac, 8w isolated flyback led driver with pfc. Singlestage pfc flyback dimmable constant current controller icl8105 40w reference design with cdm10v isolated 010v dimming interface introduction 1 introduction the icl8105 40w reference design is a digitally configurable led driver with a universal input of 90305 v ac, a wide output load range of 1645 v dc. This led driver is designed for converting an ac input to a regulated led current. Stmicroelectronics l6562a transitionmode pfc controller. Buy evl6562a35wflb stmicroelectronics l6562a, flyback converter, 35w, demo board at element14.
The irs2982s is a versatile smps controller ic primarily intended for led drivers in the 5 to 100. Or until the circuit is interrupted video of it working. Efficiency 85% total output power 3 combined voltage outputs l6562a high end, 75 w high power factor flyback led driver with two dimmable strings reference design using part l6562ad by stmicroelectronics enlarge. Lt3799 offline isolated flyback led controller with. Its linear multiplier enables the converter to shape the ac input current waveform following the input voltage. A prototype topology of closedloop, singlestage flyback converter for led driver circuit designed for an 18w led lighting source is constructed and tested to verify the theoretical predictions. The low cost l6562a and simple flyback topology combine to provide a very competitive pfc controller solution. Current regulation is achieved by means of tsm1052 by st microelectronics, providing led control characteristics. High power factor is achieved by reshaping the peak current near the zero crossing of the input ac line. This active power factor correction, transition mode, isolated flyback generates a constant current of 3. L6562a datasheet acdc conversion transitionmode pfc. This is achieved by the l6562a controller, which shapes the input current as. Traditional active pfc circuits require a twostage topology, which entails a boost stage for pfc, then buck or flyback for current regulation of the leds.
In this application note, a nonisolated, softswitched, singlestage high power factor offline led driver is introduced. Based on the full analysis of the led drive power of active and passive pfc circuit, the active and passive pfc circuits of the led drive power are performed a detailed analysis, and the types, series and mode of the pfc circuit are also described in detail, the working principles of the valley fill circuit and apfc boost converter are mainly analyzed. Proprietary multiplier design for minimum thd very accurate adjustable output overvoltage protection ultralow 30a startup current low 2. Stevalill043v1 high end, 75 w high power factor flyback led. The design is based on the l6562a transitionmode pfc controller driving a single stage pfc flyback power converter. The schematic for this led driver is shown in figure 1. Sunspeccompatible plc boosterpack l6562a boost pfc led datasheets context search. Evl6562aledconstant current inverse buck led driver using l6562a. Evl6562a35wflb, evaluation board using the l6562a 35w wide.
Primaryside regulation of output current in a linepowered. It describes a product evaluation board based on the transitionmode pfc controller l6562a. The open led protection overvoltage is set to 27v maximum. Abstract this article explains the principles of acdc converters in flyback topology having a high power factor input. The board is a 35w, wide range mains input, power factor corrected smps suitable for all low power applications requiring a high pf. The highly linear multiplier includes a special circuit, able to reduce ac input current distortion, that. Al6562ev1 user guide universal input high pfc par38 led. Application report 90w single stage pfc flyback using l6562a for led driver introduction. Stevalill043v1 reference design dimming led driver. L6561 to the l6562 and an1089 control loop model of l6561based tm pfc. The device works at a constant frequency in discontinuous conduction mode to providecon stant power to theoutput. Al6562ev1 user guide universal input high pfc par38 led driver al6562ev1 rev2 page 1 of 11 january 2016. Isolated and nonisolated flyback led driver with active pfc zsls7031 datasheet 1 january 26, 2016 brief description. Icl8105 singlestage pfc flyback dimmable constant current controller 40w reference design with cdm10v isolated 010v dimming interface xdp digital power about this document scope and purpose this document contains the specification, schematic, bill of materials and measurement results of the 40w led driver with 010v dimming interface.
Study and design of pfc circuit of led driver power. L6562a acdc conversion transitionmode pfc controller features. A block diagram of the l6562a is shown in figure 2. Lt3799 1 3799f n isolated pfc led driver with minimum number of external components n triac dimmable n vin and vout limited only by external components n active power factor correction typical pfc 0. And8451 power stage design guidelines for the ncl30000. High power factor flyback converter for led driver with. Table 2 design values components valuesratings flyback transformer efd 25 core n1n2 9015 primary inductance2. Isolated and nonisolated flyback led driver with active pfc.
A transition mode pfc controller l6562a is used to achieve this. Electronic singlestage led driver pfc preregulators to meet iec632 highend acdc adaptor charger notes. Pfc controller l6562a, and presents the results of its bench demonstration. Evl6562a35wflb demonstration board based on the transition mode pfc controller l6562a. This means the converter must process power in a sinesquared manner due to the product of sine wave voltage times sine wave current. Block diagram for the l6562a figure 3 shows the schematic of the proposed singlestage led driver. The main purpose of this reference design is to demonstrate a high performance and compact size offline flyback led driver with pfc based on tps92310. L6562a transitionmode pfc controller bcd technology. This design example report discusses the 12 w power factor corrected valley fill nondimmable isolated flyback, constant voltage led driver employing tinyswitch4 tny286pg.
Stevalill0v180 w offline pfc and led driver demonstration board with dimming based on the l6562a. Cat4101 1 a constantcurrent led driver with pwm dimming. Icl8105 singlestage pfc flyback dimmable constant current. Evl6562a400wl6562a 400w fotcontrolled pfc preregulator evaluation board. This pwm controller integrates power factor correction pfc and quasi. Stevalill019v1 demonstration board implements an isolated high pf flyback converter based on l6562a transition mode pfc controller, capable of supplying 4 constant current outputs for 4 different rggb led modules. Power integrations 5245 hellyer avenue san jose, ca 958 united states phone 408 4149200 2019 power integrations, inc. The zsls7031 is a primaryside controlled, peakcurrentmode highbrightness led flyback driver that supports bothisolated and nonisolated designs with active power factor correction. Drv8320rs threephase smart gate driver with buck and spi interface evaluation module. Stevalill043v1, demonstration board using l6562a high end, 75 w high power factor flyback led driver with two dimmable strings reference design using part l6562ad by stmicroelectronics enlarge.
Stevalill043v1 high end, 75 w high power factor flyback led driver based on the l6562a with two dimmable strings, stevalill043v1, stmicroelectronics search. Aug 12, 2014 the present disclosure provides a linepowered led driver operable to provide primaryside regulation of output current. The main purpose of this reference design is to demonstrate a high performance, compact size and triac dimmable offline flyback led driver with pfc based on tps92314. Evl6562a led constant current inverse buck led driver using l6562a. Pdf a flyback smps led driver for lighting application. Stevalill043v1 high end, 75 w high power factor flyback. The l6562a is a pfc controller operating in transition mode.
It eliminates the need for an optocoupler, tl431 shunt regulator, or any. The controller used is l6562a transition mode pfc output controller by st microelectronics. This configuration uses an isolated feedback with an optocoupler and a secondary side. Application note 55w flyback converterdesign with irs2982s. L6562a pfc controller in an smps architecture smps 400 vdc cin pfc conv.
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