International Rectifier Releases New Series of HEXFET Power MOSFETs

International Rectifier (El Segundo, CA) has released a new series of topology-specific HEXFET power MOSFETs that they claim maximize efficiency in targeted, isolated and buck dc/dc converters.

The new 100V-rated IRF7473 comes in an SO-8 package, and was designed for the primary stage of two-stage isolated converters with 48V input and 1.6V output at 60A. It is optimized for low device on-resistance and low gate charge. It can be used in a full-bridge configuration.

Four additional MOSFETs, the IRF7453, IRF7450, IRF7451 and IRF5801, are optimized for significantly reduced on-resistance, while keeping gate charge to a minimum level. This MOSFET quartet has been optimized for 48V input, active and passive reset, and primary-side isolated dc/dc converters below 30W.

The new MOSFETs are priced at $0.42 each in 10,000-unit quantities.