How to Reduce LED Driver Failures

OFweek | Posted: 03 Nov 2017, 11:27

In modern time, the use of LED lighting is as wide spread as the internet. The LED lamps show much more efficiency than the traditional incandescent and even the compact fluorescent lamps. The LED lamps are energy saving, eco-friendly, and flexible in usage.  
 
LED lamps consist of LED light source, electronic control or drive unit, secondary optical parts, and heat dissipation components. A typical LED lamp can last a lifetime of around 50,000 – 100,000 hours in usage. Due to the cost of LED lamps being much higher than the traditional lighting solutions, it is critical to make the LED lamps last as long as possible.  
 
There are some LED lamps that can fail in a considerable time ahead of its claimed life.  This can happen due to the following reasons:
1) LED lamp operational environment shift over time due the weather, and/or other exterior elements. Operation condition is not always constant.  
2) The lifetime mismatch between the LED lamp and its driver. This means the driver often will fail much earlier than the LED lamp and this is what we will try to address here.
 
According to various reports, more than 74% of LED system fail is attributed to the LED driver. Only 7% fail is caused due to the LED light source.  
 
 
 
An LED driver has many failure modes. It is usually a component failure which will cause output current degradation. Besides electrolytic capacitors, thin film capacitors, ceramic capacitors, transformers, and power diodes MOSFET are all susceptible to failure due to driver degradation.  
 
 
 
So how do we improve lifetime of a LED driver? Potting compound!  It will protect the components from outdoor harsh elements such as moisture and dust. It will help to dissipation heat so the driver can operate at a lower temperature. It is a great dielectric to insulate the LED driver components from unexpected electric shock. Ultimately, it reduces LED driver failure.
 
Asphalt Potting Compound Properties
 
Asphalt based potting compounds by Shanghai Spark Technology enjoy wide popularity among electronics industries due to their excellent electrical and mechanical properties, as well as their ability to offer protection against chemicals and high temperatures. Shanghai Spark’s CQ18P compound enables electrical components to be protected against dust, moisture and short circuits, and as standard potting compounds have better thermal conductivity than air, they provide more efficient dissipation of heat from components, thus prolonging service life.
 
Unlike resins which needs long cure time, CQ18P potting compound can cure within 1 minute of potting. Which means instead of setting the enclosure aside for long cure process, one can start the packaging process as soon as the potting process is complete.
 
While epoxy resins provide a hard and inflexible encapsulation when cured, Shanghai Spark Potting Compounds display more elastomeric or rubbery in their cured state due to the nature of asphalt.  This is particularly useful if the circuit to be potted contains delicate components. 
 
Cost:
When it comes to cost, there is no encapsulating solution cheaper than Asphalt Potting Compound. This is why Shanghai Spark CQ18P Asphalt Potting Compound has been in vast production for over 20 years since the electronic ballast days. Today on the market, Asphalt Potting Compound price is usually 1/3rd or 1/4th of the resin price. As result, many LED driver makers are choosing Asphalt Potting Compound as a reliable and efficient cost down solution. With it, LED manufacturers will NOT be able to compete in this cutthroat market.
 
Conclusion:
Asphalt Potting Compound is a 1 part system. It only needs a heat agent to melt the compound, then pot, then let it cool to cure. It is purely a physical reaction which eliminates many of the health hazards from those 2 part chemical reaction compounds such as resins. 

LED & Lighting

Epistar 2Q17 operations turn to net profit

Epistar 2Q17 operations turn to net profit

LED epitaxial wafer and chip maker Epistar has reported second-quarter 2017 operations swung from net losses for the fourth quarter of 2016 and the first quarter of 2017 into net profit of NT$730.9 million (US$24.1 million).

Lextar, Unity Opto see July revenues rise on month

Lextar, Unity Opto see July revenues rise on month

Lextar, Unity Opto see July revenues rise on month.

Global Lighting reports decreased earnings for 2Q17

Global Lighting reports decreased earnings for 2Q17

Light guide plate (LGP) maker Global Lighting Technologies has reported net profits of NT$84.25 million (US$2.79 million) for the second quarter of 2017, down 66.9% from a year earlier. The earnings translated into an EPS of NT$0.64 for the quarter.

Tons Lightology reports worse-than-expected 2Q17 results

Tons Lightology reports worse-than-expected 2Q17 results

Lighting solution provider Tons Lightology saw worse-than-expected results in second-quarter 2017 despite it being a traditional peak season, as Europe-based clients adjusted inventory levels and decreased orders, and competition from China-based firms heated up significantly.

Seoul Semiconductor's Q2 revenue up 14.9% year-on-year, driven by general lighting applications

Seoul Semiconductor's Q2 revenue up 14.9% year-on-year, driven by general lighting applications

Seoul Semiconductor’s Q2 revenue up 14.9% year-on-year, driven by general lighting applications.

OLEDs of the Future Could be Curved, Corning Says

OLEDs of the Future Could be Curved, Corning Says

Beginning April of 2016, glass company Corning worked with OLEDWorks. In the first demonstration from their partnership, the companies unveiled a curved OLED panel.

Osram Lighting Solutions Presents SIMPLITZ LED Floodlights

Osram Lighting Solutions Presents SIMPLITZ LED Floodlights

Recently, at their new product introduction road shows across the Asia Pacific region, Osram Lighting Solutions presented the SIMPLITZ LED Floodlight series.

Cree Introduces CLQ6A RGBW and CLQ6AF PC Amber LEDs

Cree Introduces CLQ6A RGBW and CLQ6AF PC Amber LEDs

Cree has added the CLQ6A RGBW to its line of architectural lighting class LEDs.

Acclaim Introduces Touch-Sensitive LED Panel

Acclaim Introduces Touch-Sensitive LED Panel

Acclaim Lighting, a Los Angeles, based lighting firm, has introduced the React Panel. The React Panel is a touch-sensitive LED panel for interactive surface lighting applications.

LG Innotek Debuts First 'Handrail UV LED Sterilizer'

LG Innotek Debuts First 'Handrail UV LED Sterilizer'

LG Innotek of Seoul, South Korea, has released the ‘Handrail UV LED Sterilizer’. The device uses UV LEDs to remove germs from handrails of escalators.

Toyoda Gosei develops automotive headlamp LEDs

Toyoda Gosei develops automotive headlamp LEDs

Toyoda Gosei Co Ltd of Kiyosu, Aichi Prefecture, Japan has developed its first automotive headlamp LED as a new product.

Eaton Launches Metalux Cruze LED Retrofit Kit

Eaton Launches Metalux Cruze LED Retrofit Kit

Eaton, a power management company based in Peachtree City, Georgia, introduced the Metalux Cruze LED Retrofit Kit.

Hydrogen Could Provide Path to High-Efficiency OLEDs

Hydrogen Could Provide Path to High-Efficiency OLEDs

A molecule that changes its chemical structure slightly before and after emission could provide a novel, stable approach to achieving high efficiency in OLEDs.

Berkeley Lab tests smart LED lighting in New York living laboratory

Berkeley Lab tests smart LED lighting in New York living laboratory

The US Department of Energy (DOE) Lawrence Berkeley National Laboratory (Berkeley Lab) has detailed a living laboratory test of solid-state lighting (SSL) and controls on a 40,000-ft2 floor in a New York commercial office building.

NanoLumens Launches Glassless Touch Screen LED Display Technology

NanoLumens Launches Glassless Touch Screen LED Display Technology

NanoLumens an LED display maker based in Atlanta, Georgia USA, has introduced true glassless touch screen technology.

Epistar June revenues hit 15-month high, Everlight Electronics flat

Epistar June revenues hit 15-month high, Everlight Electronics flat

Epistar June revenues hit 15-month high, Everlight Electronics flat.

The LED Bulb Expert Garner Huge Success on 121st Canton Fair

The LED Bulb Expert Garner Huge Success on 121st Canton Fair

Shanghai Wellmax Lighting Industry (WELLMAX) concluded another successful chapter today at the 2017 Canton Fair with high appraisal from both exhibitors and buyers. Held from April 15-19 at the China Import and Export Fair Complex in Guangzhou。

WELLMAX Highlights 2017 Canton Fair with a Captivating Collection of New LED Bulbs

WELLMAX Highlights 2017 Canton Fair with a Captivating Collection of New LED Bulbs

WELLMAX, as the LED Bulb Expert of the LED industry and one of the longest standing participants of the Canton Fair, joined the 121st Canton Fair from April 15th- 19th.

WELLMAX Sets Sailfor 2017 Canton Fair With New Astonishing LED Product

WELLMAX Sets Sailfor 2017 Canton Fair With New Astonishing LED Product

MaxLite Reinvents the Shoebox with Slim LED Area Lights

MaxLite Reinvents the Shoebox with Slim LED Area Lights

Providing a sleek and efficient alternative to traditional shoebox fixtures, MaxLite introduces LED Slim Area Lights as well designed illumination for roadways, parking areas and pedestrian routes.

Yajiang Upgrades Stager Line with Lumileds' LUXEON C Color LEDs

Yajiang Upgrades Stager Line with Lumileds' LUXEON C Color LEDs

While Chinese stage lighting provider Yajiang Photoelectric set out to upgrade its Stager line of lighting equipment, the company sought LED technology capable of delivering vibrant, saturated colors with a high color gamut, as well as fully tunable whites over a wide range of color temperatures. Fo

WELLMAX Applied Diamond Mark of Quality to Shorten Customs Clearance Time for Customers

WELLMAX Applied Diamond Mark of Quality to Shorten Customs Clearance Time for Customers

WELLMAX Applied Diamond Mark of Quality to Shorten Customs Clearance Time for Customers.

SYLVANIA Smart Home Launches Apple HomeKit Integrated Hub Free Bulb

SYLVANIA Smart Home Launches Apple HomeKit Integrated Hub Free Bulb

LEDVANCE continues to advance light by announcing the HomeKit-enabled SYLVANIA Smart Multicolor A19 bulb that can be easily controlled via Siri and Apple’s Home app without a separate hub. Installation is easy. All you need to do is screw in the Bluetooth-enabled bulb in your favorite lamp, sync it

MaxLite LED Fixtures with Enlighted Controls Approved by DLC

MaxLite LED Fixtures with Enlighted Controls Approved by DLC

MaxLite announced that its Polygon and Vapor Tight LED linear fixtures are now recognized by DesignLights Consortium (DLC) as optional models to Enlighted’s Networked Lighting Controls listed products.

Zumtobel Launches Capsule Collection LED Luminaires

Zumtobel Launches Capsule Collection LED Luminaires

Zumtobel presents their first capsule collection consisting of five exclusive luminaires, which were originally developed and custom-made for special client projects and are now available to architects and light planners for creative and high-quality lighting solutions for the first time.

Oriental Edison Lighting Extends LED Bulb Range

Oriental Edison Lighting Extends LED Bulb Range

The use of LED light is gaining worldwide popularity. Many agencies have now come up to produce and supply high-grade of lighting bulbs that are based on LED technology. Oriental Edison Technology Limited is one such agency that comes with the expertise to manufacture and supply a comprehensive rang

Cree Releases Next Generation Extreme High Power LEDs

Cree Releases Next Generation Extreme High Power LEDs

Cree introduces the XLamp? XHP50.2 LED, which delivers up to 7% more lumens and 10% higher lumens-per-watt (LPW) than the first generation XHP50 LED in the same 5.0 mm x 5.0 mm package.

TAIYO Yuden to Unveil Latest LED and Photonic Products at CES 2017

TAIYO Yuden to Unveil Latest LED and Photonic Products at CES 2017

TAIYO YUDEN announced that the company will be demonstrating its latest technologies at Consumer Electronics Show (CES) 2017 from Thursday, January 5th through Sunday, January 8th, at Venetian Hospitality Meeting Suite (Las Vegas, Nevada, USA).

Lumileds Unveils First Compact UVA Emitter LUXEON UV U1

Lumileds Unveils First Compact UVA Emitter LUXEON UV U1

Leveraging its leading expertise in chip scale packaging, Lumileds today introduced the LUXEON UV U1 LED for use in UV curing, counterfeit detection, analytical instrumentation, inspections and other UVA and Violet (380-420 nm) applications.

MaxLite LED Tube Light Resilient to Environment Factors Including Water, Dust and Corrosion

MaxLite LED Tube Light Resilient to Environment Factors Including Water, Dust and Corrosion

MaxLite introduces the LED TriMax Vapor Tight fixture as a direct replacement for fluorescent linear fixtures in locations that require waterproof, dustproof or corrosion proof lighting.

LED Flood Light

LED Flood Light

The Pinnacle LED Flood Light from Lumitec LLC offers a more than 1000-lumen output.

LED Illuminator

LED Illuminator

The pE-340fura bespoke LED illuminator from CoolLED Ltd. is designed for Fura-2 imaging, which also supports everyday...

Dual-Mode Programmable Emergency LED

Dual-Mode Programmable Emergency LED Driver

The OPTOTRONIC Dual-Mode Programmable Emergency LED Driver from Osram Sylvania is a programmable single-driver solution for...

Single-Die LED

Single-Die LED

The LUXEON V is a 1700-lm single-die LED from Lumileds in a compact 4 × 4-mm footprint.