International Rectifier’s (IR) new IRF6811 and IRF6894 are part of its DirectFETplus power MOSFET family suitable for 12V input synchronous-buck applications including servers, desktops, and notebooks.
The first two devices in the new family reduce on-state resistance (Rds(on)) to 2.8-mΩ at 10V (IRF6811) and 0.9-mΩ RDS(on) at 10V (IRF6894). Gate charge (Qg) is 11-nC and 29-nC, respectively. Compared to previous generation device efficiency is improved up to 2 percent. The IRF6894 also features a monolithically integrated Schottky that reduces losses associated with body diode conduction and reverse recovery.
The new DirectFETplus MOSFETs are footprint compatible with previous generation devices. The IRF6811 control MOSFET is available in a Small Can while the IRF6894 synchronous MOSFET is offered in a Medium Can.
Pricing for the IRF6811 and IRF6894 begins at US $0.75 and US $1.75 each, respectively in 10,000-unit quantities.