JAJSFS7B July 2018 – February 2019 LM5180-Q1
ADVANCE INFORMATION for pre-production products; subject to change without notice.
The LM5180-Q1 primary-side regulated (PSR) flyback converter is a high-density, cost-effective solution for automotive and industrial systems requiring less than 7 W of isolated DC/DC power. This compact, easy-to-use flyback converter with low IQ can be applied over a wide input voltage range from 4.5 V to 65 V, with operation down to 3.5 V after startup. Innovative frequency and current amplitude modulation enables high conversion efficiency across the entire load and line range. Primary-side regulation of the isolated output voltage using sampled values of the primary winding voltage eliminates the need for an opto-coupler or an auxiliary transformer winding for feedback. Regulation performance that rivals that of traditional opto-coupler solutions is achieved without the associated cost, solution size and reliability concerns. The LM5180-Q1 converter services a wide range of applications including automotive on-board chargers and IGBT-based motor drives for HEV/EV systems.