LED driver IC simplifies bulbs, tubes and ballasts up to 22W

June 09, 2016 // By Julien Happich
Housed in a compact SO-8 package, Power Integrations' LYTSwitch-1 single-stage, non-isolated, buck topology LED driver IC family enables the design of LED bulbs and tubes with high constant-current accuracy while using a minimum number of components.

A novel driver algorithm ensures high power factor (PF) and low total harmonic distortion (THD) while maintaining very high efficiency. The chips offer an efficiency greater than 93% with a PF of over 0.9 and THD as low as 15%. Devices can be used in a low-side buck topology for reduced EMI or in a high-side buck topology which simplifies design. Delivering up to 22 W without a heatsink, the universal input (100 - 308 VAC) ICs incorporate a 725 V MOSFET for high reliability. Designers can make use of small, off-the-shelf inductors due to a unique peak current control algorithm. The new devices meet all applicable international standards including: DOE 6 (external power supply), CEC Title 20 and 24, ENERGY STAR SSL, EN61000-3-2 (C) plus China and India standards.

In common with all Power Integrations products, LYTSwitch-1 LED driver ICs have a host of protection features including thermal foldback with end-stop shutdown, short circuit protection, input and output OVP, overcurrent and SOA protection.

Visit Power Integrations at  www.power.com