The new design will be showcased in the Power Integrations booth at LED Expo Korea, Kintex, Korea; from May 20 to May 23, 2009 and LED Lighting Taiwan, Taipei, Taiwan; from June 10 to June 12, 2009).
LEDs are rapidly emerging as the preferred streetlighting technology, transfering the traditional technologies like high pressure sodium (HPS) lamps. LEDs consume far less electricity for each lumen of useful light emitted, supplying as many as 80 lumens per watt when driven by a high-efficiency resonant power supply, versus just 58 lumens per watt for HPS lamps. Additionally, LEDs offer better directional control and color quality than HPS lights, a key consideration in shopping and residential areas. LEDs can also turn on and off immediately and retain their efficiency when dimmed, features well suited to automated sensing of ambient light and human activity, enabling light output to be optimized for cost, with less consequences to the community lighting scheme. Maintenance costs, and therefore the total cost of ownership, are also considerably reduced due to the intrinsically high reliability of LEDs compared to HPS lamps.
HiperPLC, Power Integrations’ first high-power product, is designed to control the AC-DC converters from 80 to 600 watts. HiperPLC reduces costs by minimizing the size of the PFC magnetics needed, and by integrating the PFC and LLC controllers into a single IC. The IC offers up to 0.99 power factor and features synchronization of PFC and LLC controllers. Synchronization minimizes the ripple in the bulk capacitors, which reduces capacitor operating temperature and significantly extends the life of the power supply. Support for HiperPLC is now featured in copmany’s PI Expert software (version 7.1.4), an automated power supply design tool based on PI products.
Doug Bailey, Power Integrations’ vice president of marketing, states: “Municipalities around the world are finding that LEDs offer a greener, more economical approach to streetlighting by saving both energy and maintenance costs. However, these benefits cannot be fully realized without a highly efficient, reliable power supply driving the LEDs. With HiperPLC, designers can produce a simple, reliable, cost-effective, power supply with efficiency as high as 92%.”
