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San Jose, California, September
2005...Power Integrations, the leader
in high-voltage integrated circuits for power conversion, announce
the DI-92, the latest application of its innovative power conversion
technology in a simple, ultra-low component count driver for off-line
LED lighting. It utilizes one of the Company’s LinkSwitch-TN
family of integrated circuits, LNK302, and requires only nine components
to deliver a 40mA output at 0.5W. Accordingly, it is ideally suited
for a variety of lighting applications in which extended life and
low maintenance are important factors, such as emergency exit signs
and nightlights.
Operating across the entire global range of ac input voltages, from
85 V to 265 V, the DI-92 is a constant-current LED driver circuit
using a non-isolated buck-boost topology. With a low component count,
the device is also extremely small, lightweight and inexpensive,
costing 50 cents in unit quantities of 10K. It is also environmentally
friendly, operating at up to 75 percent efficiency, well above the
level achievable with passive designs, meets EMI specifications
CISPR22B/EN55022B with a margin of more than 8dB, and is Class II
safety-compliant.
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The DI-92 is available for download from
the Design Examples page of the Power Integrations website, www.powerint.com/appcircuits.htm
Low-cost, compact power driver for off-line LED lighting
t: (408) 414-8528
f: (408) 414-8628
e: jshiffler@powerint.com
w: www.powerint.com
EDI-new-products-wk37-2005
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