Compact fluorescent lamp reference design

Power Electronics / Power Management

26 September 2001 Power Electronics / Power Management

International Rectifier has released the IRPLCFL2, a complete reference design for compact fluorescent lamp (CFL) ballasts using the IR2156 integrated ballast control and gate driver IC.

The IR2156 offers high integration of protection and programmable features to eliminate 10 discrete components, thereby decreasing manufacturing cost by as much as 25% and accelerating time-to-market. Replacing incandescents with compact fluorescent lamps is one of the easiest ways to conserve electricity, as research shows that CFLs use 75% less energy than typical incandescent bulbs. In addition, CFLs can last as long as 10 000 h, compared to common light bulbs that last approximately 750 h.

The IR2156 device embeds a half-bridge ballast driver and timing circuits into one chip, together with core ballast protection functions including failure-to-strike, over-current, brownout and filament failure. Features such as programmable pre-heat, ignition and run characteristics serve to minimise electrode wear and ensure reliable operation and longer lamp life. Small enough for built-in CFL ballast applications, the IR2156 CFL ballast assembly is an alternative to inefficient, self-resonating bipolar CFL designs. The IRPLCFL2 reference design provides a complete 42 W, 110/220 V a.c. compact fluorescent lamp ballast that can be programmed by means of simple component changes to accommodate different lamp types and operating voltages.

The reference design is supplied with a bill of materials, application note, PCB layout and silkscreen. It can be easily customised using IR's free ballast design software at www.irf.com/lighting

For further information contact Avnet Kopp, (011) 444 2333, sales@avnet.co.za or www.avnet.co.za

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Compact fluorescent lamp reference design

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