Design center
Learning center
Flash LED drivers for mobile applications: overcoming the constraints of space and power
January 30, 2012
LED-based camera flash lights so far have failed to unfold their potential. The performance bottleneck however lies in the driver circuitry. Here's a proposal to overcome the limitations.
LED-based camera flash lights so far have failed to unfold their potential. The performance bottleneck however lies in the driver circuitry. Here's a proposal to overcome the limitations.
- Comparing Bluetooth low energy and proprietary RF for HID applications
- Design a wide-voltage-band buck regulator
- Compliance to Power-over-Ethernet safety standards is critical when moving beyond 60-W
- Power electronics for smart energy require innovative packaging technology
- Design industrial systems on a chip that meet stringent global safety standards
- Step by step for an optimised flyback design: Isolated close loop design - Part 2
- Power Tip 43: Discrete devices - a good alternative to integrated MOSFET drivers (Part 2)
- Myth or fact? You can increase the force of your solenoid by removing turns (Part 2 of 3)
- Myth or fact? You can increase the force of your solenoid by removing turns (Part 1 of 3)
- When the power fails: Designing for a smart meter's last gasp
Organic solar cells and OLEDs - A comparison of two competing approaches
Wed, 1 Feb 2012 12:02:00 +0100
Two basic, yet different, approaches are available for fabricating elements such as OLEDs or solar cells from thin layers of organic materials with semiconductor properties: namely, (a) the use of polymers, i.e., long-chain molecules that consist of a large number of identical repeating units (monomers) in which the exact number of repeating units in a material is subject to fluctuation, and (b) the use of “small molecules.” This paper compares the two.
Two basic, yet different, approaches are available for fabricating elements such as OLEDs or solar cells from thin layers of organic materials with semiconductor properties: namely, (a) the use of polymers, i.e., long-chain molecules that consist of a large number of identical repeating units (monomers) in which the exact number of repeating units in a material is subject to fluctuation, and (b) the use of “small molecules.” This paper compares the two.
- IGBT Modules: Data Sheet Comparisons and the Pitfalls of such Comparisons
- Power Components Simplify 1kW Power Design
- Safety requirements for board-mounted DC/DC converters
- Active ORing Solutions in Redundant Power System Architectures
- Battery Management Solutions: Harvest the power of the world's energy
- Mastering Power Modules: The advantages over discrete solutions
- Coin cells and peak current draw
- A boost-topology battery charger powered from a solar panel
- Microcontrollers for solar inverters
Today's news
- Nexeon's battery technology claims double triumph at environmental awards
- X-FAB enhances advanced mixed-signal process design kit with Silicon Frontline's post-layout extraction software
- LED lighting to drive USD 10bn power supply market in 2016
- New plugmeter reference board provides blueprint for an embedded power meter at the point of load
- High costs, quality concerns thwart market for energy-efficient lighting
- Polyera achieves world-record organic solar cell performance and enables windows to act as solar panels
- CIGS solar panels sales expected to grow rapidly
- Supercapacitor LED flash/torch controller IC helps overcome LED camera flash limitations
- Vicor unveils online IBC power simulation tool
- Germany leads resurgent European PV market growth late in 2011
New Products
- 0.37-mm ultra-flat package Schottky rectifiers handle currents up to 1.5-A
- 1-kW industrial quality DC/DC converter offers convection cooling
- Signal Transformer unveils more than 150 new SMD power inductors
- High-speed USB 2.0 automotive-grade protectors
- 1700-V SiC Schottky diodes enable cost savings for solar, motor drive and traction applications
- LED-backlit 8.5 inch super wide viewing angle LCD has up to 70,000 hours of operating life
- Wideband PLL with integrated VCOs
- 5-W and 10-W encapsulated power supplies focus on medical applications
- Energy saving 150-W medical power supplies supports global 60601-1 Ed 2 & 3 safety approvals for medical equipment
- PCB design tool suite comes with integrated IR-drop and power integrity solvers
Next events
MOST POPULAR NEWS
- Next generation ultracapacitor technology promises high performance energy storage benefits
- Ultra-high performance 1200-V MOSFETs claim superior performance than Si IGBTs and Superjunction MOSFETs
- Treehouse Labs and NXP unveil low-power wireless chip technology platform to slash wireless sensor network costs
- HomePlug Powerline Alliance unveils AV2 specification for next-generation broadband speeds over powerline wires
- Open Smart Grid Protocol (OSGP) for grid technologies approved
- Organic photovoltaics offer greener benefits to provide solar cell
- HiWave demonstrates ultra-low power Bluetooth flat speaker design at CES
- Soitec and Sumitomo Electric demonstrate 4- and 6-inch GaN engineered substrates
- Germany leads resurgent European PV market growth late in 2011
- Energy efficient 100-W LED light bulb uses only 12 W
Interview
Technical papers
- Organic solar cells and OLEDs - A comparison of two competing approaches
- IGBT Modules: Data Sheet Comparisons and the Pitfalls of such Comparisons
- Power Components Simplify 1kW Power Design
- Safety requirements for board-mounted DC/DC converters
- Active ORing Solutions in Redundant Power System Architectures
- Battery Management Solutions: Harvest the power of the world's energy
- Mastering Power Modules: The advantages over discrete solutions
- Coin cells and peak current draw
- A boost-topology battery charger powered from a solar panel
- Microcontrollers for solar inverters
Poll
Texas Instruments
International Rectifier
Energy Harvesting
MOSFETs
Power Supplies
STMicroelectronics
Batteries
IMS Research
LED
Analog Devices
Vishay Intertechnology
Battery
National Semiconductor
DC/DC Converters
Fairchild Semiconductor
MOSFET
Solar
Analog
Smart Grid
Maxim Integrated Products
Diodes
Photovoltaic
Intersil
Power Management
Linear Technology
Power
NXP Semiconductors
Power MOSFETs
Microcontrollers
Power Supply
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This site contains articles under license from EETimes Group , a division of United Business Media LLC.
