LED Luminaries

LED news and insight from our technology editor Steve Bush, who has been messing with LED lighting for more years than he would care to remember.

Power chip for 75W LED lighting

Power Integrations has introduced chips for mains-powered LED lighting up to 75W.

The single stage design has both power factor correction (PFC) and a constant current regulation, and is aimed at high-bay, car park and street lamps.

There are two devices: LNK410EG (dimming) and LNK420EG (non-dimming), plus a reference design (RDR-290) to show them off.

RDR-290 is 92.2% efficient when feeding a 75W load from 230Vac while meeting EN61000-3-2 class C limits. Power factor is above 0.95.

“No primary high-voltage electrolytic bulk capacitor is required, making lifetimes of 50,000 hours practical, even in challenging outdoor environments and at high ambient temperatures,” claimed the firm.

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Simplified schematic.

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Tags: chips, high voltage, lighting power, Power Integrations, reference design

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