Driving multiple high-power LEDs in switch mode is no easy task, assuming uniform brightness, dimming capability, and power factor correction play any sort of role. With renewed demand for LED lighting solutions in recent years, there are several options to get started with building a power supply.
Consider the following tips, specific to electrical power supply:
Engineers who decide to go this route have some great choices. Mean Well's offline LED power supply is well-equipped with dimming features, integrated protections, universal AC input, and PFC -- all nicely packaged for both indoor and outdoor applications. Though feature-rich, there are simpler alternatives available for engineers who prefer them.
Go with proven designs
Those new to power supply design are best left to proven designs. Semiconductor companies like Texas Instruments, STMicroelectronics, and Linear Technology publish comprehensive reference designs that include original schematics, bills of materials, application notes, and even Gerber files. For those not limited by proprietary designs, these online guides are a great resource. Be mindful, though, when modifying a supplier’s reference design, and keep them on the bill of materials through design, prototype, and production.
Go all in
Designing a supply from scratch doesn’t mean you have to go all in, all alone. Find a community of peers and experts, such as element14, to ask questions and share ideas. For professional engineers and makers alike, this is often the most enjoyable part. With more access to a global knowledge base, affordable circuit design software and advanced prototyping facilities, there has never been a better time to be your own ODM. So LED there be light!
David Finch is technical marketing manager for Newark element14.
There are drivers everywhere who turn on their headlights or windshield wipers with no awareness of the development effort behind a switch. Yet from freezing winter to sweltering summer, on dull rainy days and in bright sunshine, switches are expected to function consistently for the lifetime of a car.
The standards electrical machines and components are required to meet in the food processing industry are far more stringent than those in traditional plant construction. For specialized production environments such as these, components must not only resist thermal and physical stresses, but they must also be resistant to the chemicals used to sterilize equipment.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Was Steve Job’s signature outfit of a black turtleneck, jeans, and sneakers the secret behind his success? Maybe, or maybe not, but it was likely an indication of a decision-making philosophy that enabled him to become one of the most successful innovators of all time.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.