Product category: Reference Designs
News Release from: Power Integrations | Subject: RDK-131
Edited by the Electronicstalk Editorial Team on 22 February 2007
Design kit brings power to LED lamps
Reference design kit for ultra-small power supplies helps designers deliver energy-efficient LED alternatives to power-hungry incandescent lights
Power Integrations has introduced a reference design kit (RDK-131) for ultra-small power supplies that helps designers deliver energy-efficient LED alternatives to power-hungry incandescent lights. The kit helps designers produce a power circuit that fits inside the LED lamp socket, and also ensure that their incandescent-replacement LED lamps will pass EMC requirements for conducted and radiated electrical noise.
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Unlike incandescent light sources, which can be powered directly from the mains supply, each LED lamp requires a power supply to be incorporated within the Edison (E27) or bayonet (GU10) sockets.
According to Don Ashley, Product Marketing Manager for AC/DC Products at Power Integrations: 'Producing a power circuit that fits within such a small space is not a trivial task, especially if you effectively attenuate EMI to the current standards'.
'To address the size constraints posed by this application, Power Integrations has released its LinkSwitch-TN family of nonisolated offline switcher ICs in tiny SO-8 packaging'.
Further reading
Power convertors shrink into SO-8 packaging
All members of the LinkSwitch-TN, -LP and -XT families of ICs are now available in SO-8 packaging, enabling emerging applications such as LED lamps and miniature chargers
'Our RDK-131 incorporates this device in a tested, working power supply board and offers a blank PCB, extra samples of the LinkSwitch-TN ICs and guidelines on how to design LED lighting supplies around our ICs'.
'This kit significantly simplifies the task of designing LED lights, reducing their time to market'.
Because electricity generation accounts for around 40% of greenhouse gas emissions, regulatory bodies and authorities worldwide are looking at ways to reduce energy wastage.
For example, in a recent address, California Assemblyman Lloyd Levine commented: 'Incandescent lightbulbs were first developed almost 125 years ago, and remain incredibly inefficient, converting only about 5% of the energy they receive into light'.
If his proposed bill, the 'How Many Legislators Does it Take to Change a Lightbulb Act', is passed, incandescent bulbs would be banned for use in California by 2012.
By contrast, LED lamps consume about one-third as much power as incandescent, and have a much longer life.
The RDK-131 is priced at US $100.00 and is available now. Request a free brochure from Power Integrations....
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