Power Integrations has introduced LYTSwitch-5, a family of single-stage LED driver ICs that combines PFC and constant current output and supports a variety of common LED driver topologies.
Driver requirements for solid-state lighting applications vary widely, and power engineers often face challenges to quickly develop optimized designs in response to lighting designer requirements. The LYTSwitch-5 series supports safe-rated isolated flyback topologies for ballast applications, as well as non-isolated topologies for low-cost lamps and bulbs, such as buck and buck-boost. In addition, the choice of low-side or high-side switches enables designers to optimize for low EMI or reduce inductor complexity. By achieving more than 90% efficiency, 0.9PF, less than 5% THD, and +/- 3% current regulation accuracy on line, load, production difference, temperature and multiple topologies, LYTSwitch-5 is the best Best LED driver for applications below 25W.
The high efficiency of the LYTSwitch-5 LED driver design results in a smaller heat sink, a more compact implementation, and a longer life. Highly accurate CC regulations reduce the level of over-engineering required to ensure compliance with lumens output standards from regulatory agencies such as the California Energy Commission (CEC) and ENERGY STAR. To optimize the surge withstand performance of various product types and geographic installations, 650V and 725V MOSFET options are available.
Hubertus Notohamiprodjo, Director of Product Marketing, Power Integrations, said: "LYTSwitch-5 ICs are suitable for a variety of applications, including tubes, downlights, high and low shed ballasts. The simple design and low component count of these new ICs enable compact, reliable, high Performance driver circuits and platform-based design methods increase productivity. "
The LYTSwitch-5 LED driver IC provides up to 25W of power, an extended universal input range (90-308VAC) and a wide output voltage range (2: 1). Protection features include thermal foldback with foldback, short circuit protection, input and output OVP, overcurrent protection, and safe undervoltage and undervoltage protection.
