Power Integrations introduces 75-W single-stage driver for LED lighting


Combined PFC/CC power-converter chip raises efficiency of LED high-bay, parking-lot, and street-lamp drivers to over 92%

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LNK410EG (dimming) and LNK420EG (non-dimming) provide a constant-current output with a PF-corrected and low-THD input for challenging industrial and commercial LED lighting applications to 75 W.

Power Integrations has announced two new additions to its LinkSwitch-PH IC family. The new devices allow commercial-lighting applications up to 75 W to benefit from a single-stage design, dramatically reducing BOM cost and enabling a small high-efficiency driver. LNK410EG (dimming) and LNK420EG (non-dimming) provide a constant-current output with a PF- corrected and low-THD input. The RDR-290 reference design, which thoroughly describes a single-output driver for high-bay lighting, showcases the new devices' capabilities. RDR-290 is 92.2% efficient at 230 VAC for a 75 W output design while easily meeting EN61000-3-2 class-C limits. Power factor is above 0.95. The design requires no primary high-voltage electrolytic bulk capacitor, making lifetimes of 50,000 hours practical, even in challenging outdoor environments and at high ambient temperatures. Comments Andrew Smith, product marketing manager at Power Integrations: "By greatly increasing the power capability of single-stage conversion, the efficiency and longevity benefits of the single-stage approach can now be applied to industrial and commercial LED lighting—the market that most needs those characteristics." Power Integrations LinkSwitch-PH product family deeplink RDR-290 reference design