Four reference designs describing drivers for dimmable PAR 30 and PAR 38 LED light bulbs were introduced last week by Power Integrations that have been developed with lighting leader Cree.
According to the news release on the Business Wire, the designs showcase the combination of Power Integrations’ LYTSwitch™-4 driver ICs and CREE MT-G2 EasyWhite LEDs. DER-364 and DER-365 detail low- and high-line PAR 30 LED bulb drivers, respectively, while DER-350 and DER-396 address low- and high-line PAR 38 bulbs.
“We have worked closely together with CREE to deliver real-world LED lighting systems that live up to their potential, delivering reduced power consumption and increased lifetime. These reference designs enable designers to realise cost-effective, long-lasting LED bulbs simply and quickly,” said Andrew Smith, Senior Product Marketing Manager for Power Integrations.
Silicon Valley-based Power Integrations is a supplier of high-performance electronic components used in high-voltage power-conversion systems and a leader in high-efficiency, high-reliability LED-driver ICs.
“LYTSwitch-4 ICs are highly efficient and deliver accurate output current regulation in bulb and tube replacement applications and high-bay lighting. The devices simplify design and reduce cost while ensuring that lamps deliver uniform light output and provide exceptional performance in TRIAC-dimmable applications,” it says in the news release.
“LYTSwitch-4 ICs combine PFC and constant current in a single-stage topology, resulting in power factor greater than 0.95 and typical efficiencies of better than 90%. The single-stage approach also eliminates temperature-sensitive electrolytic bulk capacitors, greatly increasing the bulbs’ reliability and lifetime. LYTSwitch-4 ICs also operate at a high switching frequency (132-kHz), enabling smaller, lower-cost magnetics to be used, while frequency jittering reduces the need for EMI filtering. These factors combine to deliver LED-driver designs that fit easily into space-restricted bulbs.”
The designs based on the new drivers allow for fast start-up, (less than 500 milliseconds even when dimmed to less than 10% light output) and deliver excellent dimming performance.
To download DER-364, DER-365, DER-350 and DER-396, go to www.powerint.com/en/design-support/reference-designs/design-examples or visit www.powerint.com/ledrivers/cree.
Product data-sheet and product introduction videos are also available on the Power Integrations website at www.powerint.com/products/lytswitch-family/lytswitch.