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Design LED Lighting Power System In Minutes

The LED lighting market continues to grow as the government’s mandate to ban incandescent lamps has begun to be strictly enforced, however, challenges remain in the quest to efficiently design power systems to achieve LED miniaturization. Needs such as triac dimming control, dealing with varying power line regulations around the world, reducing cost, increasing efficiency, and supporting a wider range of output power add to the complexity of the design. Fairchild recently released the FL7733A and FL7734 primary-side regulation (PSR) LED driver products and 800 V SuperFET II MOSFETs that successfully address these needs.

LED lighting design engineers still face a not-so-subtle challenge of putting all the components together to form an efficient power electronic system, as shown in Figure 1. With these engineers in mind, Fairchild has enhanced the Power Supply WebDesigner online design and simulation tool to include high-performance PSR flyback/Buck-Boost LED drivers for both non-dimmable and phase-cut dimming lighting applications.

Based on the specific design requirements of these engineers, the Power Supply WebDesigner tool can quickly and accurately assess design performance and improve designs. These tools also allow users to perform detailed simulation analysis (Figure 2) and gain insights into how their designs and hardware samples can work together with a higher degree of confidence, all within minutes. For other collaborations, users can save their designs for future reference or easily share their designs with other engineers for review.

The Power Supply WebDesigner tool provides a quick guided design experience for novice designers, while allowing experienced designers to further customize key design factors. This tool provides all recommended power system components including Fairchild’s 800 V SuperFET II MOSFETs, LED driver ICs and rectifier bridges with schematics. Designers can predict critical system power factor and THD results by letting the tool directly recommend or fine-tune inductor and EMI filter designs. With the ability to visualize key component power dissipation and system efficiency over different line and load conditions (Figure 3), experienced designers can optimize component selection to ultimately improve efficiency by design.

The Power Supply WebDesigner design tool provides a complete set of time-saving LED driver design tools for designing and optimizing LED drivers. The experience provided by these online tools ranges from device to system analysis and simulation, all in minutes. Experienced or not, these tools improve effectiveness, efficiency, and reliability when designing even the most challenging triac-dimmable LED drivers

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