Diodes Incorporated has introduced new 40V-rated DMTH4008LFDFWQ and 60V-rated DMTH6016LFDFWQ automotive-compliant MOSFETs housed in a miniature DFN2020 package.
These 2.1mm x 2.1mm MOSFETs give a 90% saving in board footprint over MOSFETs supplied in larger packages such as the SOT223 type. This means that designers of DC-DC converter circuits in automotive applications can achieve higher power density.
The 40V DMTH4008LFDFWQ has a typical on-resistance of 11.5mΩ at a gate-source voltage of 10V, while gate charge is just 14.2nC. For the 60V DMTH6016LFDFWQ, these values are 13.8mΩ and 15.2nC.
Both devices are qualified for operation at up to 175°C. The sidewall-plated DFN2020 package makes them suitable for use in the high ambient temperatures found under the hood in vehicle systems.
When used in an application such as a 12V/5A buck converter, the DMTH4008LFDFWQ dissipates 20% less power than competing MOSFETs. This marked improvement in efficiency provides automotive designers with greater flexibility and the freedom to increase power density in new or existing automotive applications.