In recent years, devices have become increasingly power efficient due to improvements in the power conversion efficiency of DC/DC power supply circuits. As a result, power MOSFETs that play a significant role in power conversion performance are required to operate at high efficiency in order to minimize loss.
ROHM has previously developed numerous intermediate power class high-efficiency MOSFETs for consumer appliances. However, the increase in large-scale, high-power industrial devices and automotive applications with 24V input drives demand for highly efficient power MOSFETs that can handle up to 40V in high-current devices.
ROHM's latest power MOSFETs provide both low gate capacitance and low ON-resistance through a proprietary low-capacitance structure and new 'trench-type field plate' design. As a result, FOM, a performance index used for DC/DC converter power MOSFETs, is reduced significantly compared with ROHM's conventional products, ensuring industry-leading switching performance. This makes them ideal for high frequency applications and enables the use of smaller peripheral components.
In addition, to ensure optimum performance and reliability in synchronous rectification circuits, ROHM conducts 100% UIS (low-load avalanche tolerance) testing. Going forward, ROHM will continue developing transistor products to meet customer needs by leveraging advanced proprietary process technologies.