4 shows the conceptual diagram of this circuit. Do not place the distribution fuse on the neutral line. Output voltage: 12V DC, 3A. As one of the few power conversion companies in the world with an exclusively dedicated focus in LED illumination power supplies, we take full advantage of our experience and resource in lighting power supply application as to offer products with exceptional performance. However, … One of the key advantages of LED lighting is its reliability. LED Driver 300 Watts (100W X3) 25A Waterproof IP67 Power Transformer Adapter 90-265V AC to 12V DC Low Voltage Output, With 3-pin plug 3.3 ft LED Cable for LED Lighting Outdoor Light and Any 12V DC LED. However, customers must carefully understand whether the LED driver products purchased have this protection function before testing (taking into account the actual application environment of the LED driver, most LED drivers do not have this protection function). Powered ports are also susceptible to damaging overvoltage transients, including ESD pulses. Outputs may also be damaged or destroyed by an inadvertent short circuit. With the development of five years, we have formed LED tube driver, LED panel light power supply and LED down light power supply three big series of products. If the minimum voltage of the selected LED driver is higher than the driver output may exceed the working range at high temperature. Therefore, it is recommended that the switch or circuit breaker be broken together on the same distribution branch, and not only the neutral line can be disconnected. This can seem high enough, but it can be low enough to smooth the sharp edges of the gate drive signal which can cause the MOSFET to overheat due to insufficient driving. LED driver outputs may also be damaged or destroyed by short circuits. This means fail-safe backup overcurrent protection may be required. the LED, avoid introducing some indicators that do not conform to the principle of working characteristics, and avoid the indicators far exceeding the actual demand, and avoid excessive-quality and waste of cost. There have been customers who have purchased many brands of LED drivers, but all samples failed during the test. After a while the LEDs may start flickering or stop working entirely. Faulty drivers can cause flicker since they will be more vulnerable to being affected by heat over time. 4.8w p/m).. Don’t have time and would like to read the E-book? The device may also be placed after the MOV. If possible, apply thermal grease or thermal pad on the contact surface of the housing and the lamp housing to improve the heat dissipation performance of the driver, thus ensuring the driver’s life and reliability. and LED emergency driver and best service to our customers, Shenzhen Billda will build a world-class brand. #12 Dong Mu Road, JiangMen City, GD China 529040. Arduino power supply - TLC5940 (16-ch led driver) overheating Sep 11, 2012, 05:02 pm I am working on a project using an Arduino Mega to control 64 one-meter RGB LED strips using 4 Texas Instruments TLC5940 (16 channel LED driver). R5 can be in 1k-10k range. However, additional overcurrent protection devices may be needed to help protect ICs and other sensitive electronic components. Without good heat sinking, the internal (junction) temperature of the LED rises, and this causes the LED characteristics to change. When the instantaneous voltage of the power grid exceeds 310Vac, the drive may be damaged (even if there is a lightning protection device, because the lightning protection device is dealing with pulse spikes of several tens of uS level, and the power grid fluctuation may reach several tens of mS or even several hundred mS). With “Concentration only for you” as the purpose of enterprise,use professional technology,focused attitude and dedicated spirit, we provide world class LED green products as our own highest pursue. founded in 2009, It is an enterprise that has passed ISO9001 quality management system. … Dongguan Becky Power, established in 2008 with registered capitals of 10 million RMB and 10,000 square-meter factory areas, is a high quality switching power supply and LED lighting driver supplier integrating part design, developing and manufacturing. Under the same output power, the input power will decrease compared to the startup time. We take a look at some of the key reasons for LED driver failure and how to avoid them. If the construction worker connects the input of the drive to the two-phase lines, the power input to the LED driver exceeds the standard and the product fails. This includes: For over 30 years, McWong International, Inc. has been bridging the best of East and West in order to achieve for our valued customers an unparalleled mix of quality, service and innovation. If you don’t yet have drywall on your ceiling, please skip to the bottom (new construction applications). A second PPTC device on the driver output can be used to help to protect against damage caused by inadvertent short circuits or other load anomalies. AC-DC LED Drivers (40) DC-DC LED Drivers (39) Linear LED Drivers (54) Battery Management. The lights on the same branch are connected too much, resulting in overloading of the load on one phase and uneven distribution of power between the phases, causing the line to trip frequently. Reliable, competitive products paired with committed customer service year in and year out have enabled sustained growth over three decades. The amount of light emitted by the LED decreases as the junction temperature rises and, for some technologies, the emitted wavelength changes with temperature. When the ambient temperature is below 50 °C, the drive allows 100% full load. Quality first, Management excellence; Keep Continually improving, Strive for perfection. …EPtronics LED drivers, designed with customer’s end product in mind. With “V”as the energy saving principle, Becky has achieved UL, FCC, GS, CE-LVD, CB, EMC, RCM, 3C, PSE approvals all over the world,and gained trust and recognition of inland& overseas customers. Copyright 2008 - 2021 Brandon | All Rights Reserved | Powered by Brandon Lighting| Focus on customized linear lighting since 2008, Why the LED driver will fail? The of the LED fluctuates with temperature. Therefore, as shown in Figure 2, when the input voltage is less than 140Vac, the output load of the driver is required to decrease linearly as the input voltage decreases. LED present a load characteristic that is much different than digital devices and other loads that require constant voltage. Some customers have requested that the input power of the lamp be a fixed value, fixed by 5% error, and the output current can only be adjusted to the specified power for each lamp. This site uses Akismet to reduce spam. Based on LED driver and other related technologies and customer application experience, this paper analyzes the failures of lamp design and application: The LED lamp load end is generally composed of a number of LED strings in parallel, and working voltage is Vo=Vf*Ns, where represents the number of LEDs connected in series. Some LED lamps can overheat when used on 12 or 24 volt solar systems. WeledPower was founded in 2008 and now has become a global to led driver solution supplier, an iconic enterprise in power supply industry in China, a well-known brand in Shenzhen, a famous trademark enterprise in Guangdong Province as well. The total power is 36W. LED drivers may be susceptible to damage resulting from improper DC voltage levels and polarity. Sign up with email and the PDF will be sent to your inbox. Xiezhen keeps in mind than quality first and customer oriented.Under the operation with ISO 9001:2008.Many of our products gains CE,PSE,UL,TUV-MARK,CB,SAA,GS,SGS,CCC,ROHS.Xie zhen pffers customers great sales. As shown in Figure 1, the red curve shows the power derating curve of the LED driver’s load as a function of ambient temperature at 120Vac input. EPtronics, Inc. is a leading innovator, designer and manufacturer of LED power supplies. Required fields are marked *. LED driver Datasheet Xitanium FULL Prog LED Xtreme drivers (DTL) Xi FP 100W 0.2-0.7A SNLDAE 230V C165 sXt 9290 016 50006 Xitanium FULL Prog LED Xtreme drivers Philips Xitanium Full Programmable LED drivers are specifically designed to deliver the highest performance, protection and configurability. With multiple design centers led by our U.S. design team and supported by our own cost effective factories that specialize in power supply manufacture, we are able to offer the greatest value for innovative and flexible models. Your email address will not be published. Battery Charge Controllers (9) Battery Fuel Gauges (1) Battery Protection (9) Timing & Signal Conditioning. We provide superior products, exceptional technical support, and best-in-class customer service. The best solution is to replace the old transformer with a new LED transformer like a … As shown in Figure 2, the blue curve shows the curve of the LED driver’s output power as a function of input voltage at an ambient temperature of 55 °C. Today, the pace of technological change has quickened and competition continues to intensify. It located in QingPu Liantang Industrial Park. With the joint efforts of all WeledPower’s people and the recognition and support of nearly one thousand clients, our production capacity have broken through 1,000,000pcs I month. 2. This polymer-protected zener diode (eg Tyco’s PolyZen) can help to provide transient suppression, reverse bias protection, and overcurrent protection in a single package.Â. The talented crew, advanced technology and scientific management contributes to Hipower-Tek ‘s rapid development, along with our pragmatic and aggressive entrepreneurship comprise the core competence of our company. Power line coupled transients and surges can also reduce LED lifespan, and many LED drivers are susceptible to damage resulting from improper DC voltage levels and polarity. When the input voltage is 140Vac, the load of the driver allows 100% full load, and the input voltage is lowered. Our drivers are manufactured within our Science and Technology Park in Tonglu, China. The right side of the figure shows a coordinated circuit protection design for an LED driver and bulb array. Therefore, special attention should be paid to the large-scale electric machinery on the street lighting branch network. Causes of LED Driver Failure. If one of our current models is not perfect for your application, we can modify them or produce a unique LED driver to fit your needs.Visit our product page to select the driver that fits your needs, or let our sales team find the perfect LED driver for your desired application. By Feb of 2006, Arcata had established itself as a newly and professional company with sophisticated manufacturing facility, and has been producing high quality electronic products. As a National High-tech Company of 500 employees, Becky’s products are extensively applied on audios, LED lighting devices and household appliances etc.. With world-wide headquarters in Los Angeles, our sale and design team are just a phone call away from offering you off-the-shelf LED drivers with the regulatory approvals that allow them to drop into your designs. The blue curve shows the power derating curve of the LED driver’s load as a function of ambient temperature when 230Vac or 277Vac is input. High-brightness, high-power LEDs (HBLEDs), like any other semiconductor device, generate heat. There are 400 workers, 10,000m2 office and production area, independent and standard LED driver Test Lab in WeledPower. We design our own drivers at our headquarters in Hangzhou, China and have specialized teams that focus on low, mid and high-power designs as well as teams for network controls and accessory products. The products have passed UL、GS、VDE、TUV、3C、FCC、CE,etc. Therefore, even if the self-recommended regulator is used in the customer test, the drive has self-protection function and will not be invalid. In this example, R1 represents a ballast resistor used in combination with the protection circuit. Our products possess features such as high efficiency, superior reliability and long durability. The production capacity of Fahold are 5 million units per year. paired with an LED that is at or exceeds the driver’s maximum wattage to avoid overstressing the driver components. By using this website you are consenting to the use of cookies. (3) Because the input of the electronic load meter will have a large internal capacitance, the test is equivalent to connecting a large capacitor in parallel with the output of the driver, which may cause unstable current sampling of the driver. Customers make such requests, despite their marketing and business factor considerations. We manufacture led driver overheating for indoor and outdoor LED lighting fixtures. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). Becky believes innovation triggers company development, and has developed various independent patented technologies through years of self-research & developments. Avoid contact with the neutral line on the line. certificationis, BillDa is a high technology enterprise and professional emergency LED driver R&D manufacturer. When selecting an LED driver, consider that the driver output voltage range is greater than VoL~VoH. Depending on the driver topology, circuit design and application environments, LED drivers can run up against load anomalies and abnormal operating conditions such as overcurrent, overvoltage, undervoltage, short circuit, open circuit, improper polarity, loss of neutral, and overheating, etc. CHANGZHOU HIPOWER ELECTRONIC TECHNOLOGY CO LTD. Hipower-tek is a leading edge LED manufacturing company, specializing in the development and production of high end commercial and industrial lighting products. Underdriving is the opposite. Later, after on-site analysis, the customer used the self-internal voltage regulator to directly test the power supply of the LED driver. Our products include LED dimmable drivers, LED emergency drivers, intelligent controllers etc. If the voltage supplied to the LED is lower than required, very little current runs through the junction, resulting in low light and poor performance. First, a quick review of the basics At the chip level, an LED consists of semiconductor materials doped to form a p-n junction. This can cause overheating or premature failure of the LED array. The principle is similar. AGT takes the quality, efficiency, innovation, service as our business philosophy,provides high performance, reliable product as a fundamental, continuous innovation as the backing, fast and efficient way to serve the customers. Fig. Such a test operation makes it easy for the LED driver to start and load at a small input voltage, which causes the input current to be much larger than the rated value, and the internal input related devices such as fuses, rectifier bridges, The thermistor or the like fails due to excessive current or overheating, causing the drive to fail. LED light manufacturers are wrestling with the fact that without adequate thermal management, heat can degrade the LED’s lifespan and affect colour output. Shenzhen Xiezhen electronics co.,ltd.,founded in 2009,is spercialized in the R&D,productio adn sales of switching power supply,With over 15-year experience in desiga and manufacture of communication power supplies,industrial power supply and LEDdriver,there are more than 200kinds of power supplies in xiezhen production line,in cluding LED driver,intelligent controller,industrial power supply etc. Many equipment manufacturers prefer protection circuits combining resettable overcurrent protection devices with upstream fail-safe protection. Our Annual production capacity is 3 million units, 80% of these products exported to the countries and regions all over the world, including America, Germany, Russia, Britain, Spain, Japan etc. Remove R3 (10R) gate resistor, put a 0R. Loose wiring or bulb- loose connections and circuits can cause LED lights to flicker. Read our special supplement celebrating 60 years of Electronics Weekly and looking ahead to the future of the industry. LED applications use power conversion and control devices to interface with various power sources, such as the AC line, a solar panel or battery power, to control power dissipation from the LED driver. Ever since its foundation, Becky has been insisted on the philosophy of “Client First, Excellent Quality, Professional Innovations & United Cooperation”, operates in strict accordance with the ISO quality system and environmental protection system, and passed the ISO9001:2008 assurance system in 2009. Sign up and the PDF will be sent to inbox. Unlike an incandescent lamp, where failure is fairly simple (the bulb produces light until the filament breaks), with an LED, the failure modes range from mechanical and electrical to material. A California corporation, McWong has grown to become a leader in the design and manufacture of high quality lighting control equipment and related electrical components. In general, at a constant current, becomes low at high temperatures, and becomes at low temperatures. The company has 60 patents on emergency power supply, utility model patents and appearance patents. You could now replace one or two LED lamps with the old ones. It is very important to use adequate heatsinking to prevent LED lights from overheating. For the last few years EPtronics has made significant investment for being able to offer products with advanced technology, high performance, reliability and a variety of selections for fast evolving and growing LED applications. Guest columnist Faraz Hasan, marketing and business development manager at Tyco Electronics Circuit Protection Products says that LEDs can require overcurrent protection despite built-in safety features in driver circuits. Constant Current Source #1. lets get to the new stuff! When the wiring of the same transformer grid branch is too long and there is large power equipment in the branch when the large equipment starts and stops, the grid voltage will fluctuate drastically, and even the grid will be unstable. Most likely, a failed LED driver will just stop transmitting power to your LEDs. Since it is well known that high temperatures can significantly shorten an HBLED's lifetime as well as negatively impact brightness, temperature control is required. Electronics Weekly teams up with RS Components to highlight the brightest young electronic engineers in the UK today. Individual temperature points will be May exceed the standard and may even cause device failure. (especially in CV mode, the maximum test power should not exceed 70% of the maximum load power, otherwise, the load may be over-power protected during loading, causing the drive to not work or load.). The New Stuff!! When the drive is installed in a non-ventilated environment, the drive housing should be in contact with the lamp housing as much as possible. Inventronics sole focus on LED drivers and accessories enable us to stay at the forefront of technologies to better empower the next generation of LED luminaires. It is a crucial piece to an LED circuit and to operate without one will result in system failure. Our factory has automatic numerical control equipment with high-speed chip placement, reflow soldering, automtic wave soldering, ultrasonic plastic welding and advanced ROHS test equipments. Read the first ever Electronics Weekly online: 7th September 1960. Protect your LED lighting circuits. Take the national standard as an example. The rated working voltage between each phase line and the neutral line is 220Vac, and the voltage between the phase line and the phase line is 380Vac. Unstable, … If you wish to change your existing G4 under cabinet lights from halogen to LED, you must ensure to change all halogen transformers to 12-volt DC LED Drivers. Sign up for the Electronics Weekly newsletters: Mannerisms, Gadget Master and the Daily and Weekly roundups. Are your Power Supply & Lights Installed Correctly? When the ambient temperature is up to 70 °C, the drive can only to 60% load. Fortunately, there are zero-EMF solutions available. As we know, LEDs can run at high temperature but there is a limit how much LED Light can handle the heat. McWong’s disciplined approach to quality management, customer service, and cost control ensures that we are well-poised to accelerate our pace of growth as we partner with our stakeholders to achieve a brighter, more sustainable, more successful future. Because the LED driver is designed to meet the operating characteristics of LED luminaires, the closest test to actual and real-world applications should be to use LED bead as the load, string on the ammeter and voltmeter to test. If you are over-driving, or using more wattage on your LED Lights than the power supply is rated, this will cause your power supply to fail or flash on and off. As shown in the figure above, V1 represents the first phase voltage, V2 represents the second phase voltage, and R1 and R2 represent the LED drivers normally installed in the line. An LED Driver is vital to the safety of the bulb. LED overheating can be caused by many rather obvious design factors such as Shanghai Arcata Electronics Inc., formed in mid of 2005, specializes in electronics manufacturing services (EMS). Read the Electronics Weekly @ 60 supplement ». We also seek to create value for our customers by working to extend and increase the return on investment for solid-state lighting systems. Unstable, the lamp will flash and so on. LED overheating is a particular problem as excessive temperatures will, at the very least, greatly shorten an LED’s life and in some cases can result in catastrophic, premature failure of these expensive devices. These fluctuations can cause a light bulb to vary its light output (brightness), or cause the LED bulb to overheat. Shenzhen BillDa technology Co.,Ltd. Embraced by the experienced R&D team as well as management team, the Company is capable of designing fashion and novel products as well as saving energy. Keywords: LED lamps, LED lights, hot, dead, overheat, flicker, 12 volt, 24 volt, off-grid, solar Shenzhen Fahold Electronics Co.,Ltd.was established in 2010, a factory which integrating the LED Drivers design, R&D and manufacture, passed the ISO9001 quality management system certification. Overdriving is when the driver is sending more power through the LEDs than they can handle. In contrast, a typical LED might produce15% visible light and 85% heat. It is best to monitor the fluctuation range of the power grid or the power supply of the separate grid transformer. External Drivers (1) The AC is connected to the DC output of the driver, causing the drive to fail; (2) The AC is connected to the input or output of the DC/DC driver, causing the drive to fail; (3) The constant current output terminal is connected with the modulating light, causing the driver to fail; (4) The phase line is connected to the ground line, resulting in no output of the driver and charging of the outer casing; Generally, the outdoor engineering application is a 3-phase four-wire system. Shenzhen Wei Peng Shiji Technology Co Ltd. Shenzhen Wei Peng Shiji Technology Co.,Ltd (WeledPower) is a national high-tech enterprise specializing in LED Drivers. The driver is sending less power to the LED lights which causing decrease light quality and output. If drive current and junction temperature are not properly managed, the LED’s efficiency can drop quickly, resulting in reduced brightness and shortened life. Protecting these interfaces from overcurrent and overtemperature damage is frequently accomplished with resettable polymeric positive temperature coefficient (PPTC) ­devices. The input power varies with Vo when the overall efficiency of the driver is substantially constant. If the maximum output voltage of the selected LED driver is lower than VoH, the maximum power of the may not reach the actual power required at low temperature. An LED driver that is sending a very low amount … LED light manufacturers are wrestling with the … During such an event, the increased voltage across the LED driver can result in higher total power dissipation from the driver package.
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