P-Channel MOSFETs Deliver Class-Leading Low ON Resistance

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24-model lineup with withstanding voltages of -40V/-60V makes it ideal for large consumer and industrial equipment

Demand for higher efficiency and power density is driving the adoption of higher input voltages in industrial and consumer applications, for which MOSFETs are expected to provide not only low ON resistance, but high withstand voltages as well.

Against this backdrop, a 24-model lineup of 24V input, -40V/-60V withstand voltage P-channel MOSFETs have been released in both single (RQxxxxxAT/RDxxxxxAT/RSxxxxxAT/RFxxxxxAT) and dual configurations (UTxxx5/QHxxx5/SHxxx5) – ideal for industrial and consumer applications such as factory automation, robotics, and air conditioning systems.

These new products leverage refined process technology to achieve low ON resistance per unit area in their class. This translates to 62 per cent lower ON resistance vs conventional products for -40V new products and 52 per cent for the -60V new products.

At the same time, quality is improved by optimising the device structure and adopting a new design that mitigates electric field concentration. As a result, both high reliability and low ON resistance (which are typically in a trade-off relationship) are achieved. These solutions contribute to stable long-term operation in industrial equipment demanding exceptional quality.

Key Features

1. Class-leading low ON resistance

These new products achieve a finer gate structure and higher current density, resulting in low ON resistance per unit area for 24V input -40V/-60V withstand P-channel MOSFETs. 

2. New design improves quality

The new lineup leverages accumulated expertise regarding reliability to optimise the device structure while adopting a new design that mitigates electric field concentration at the gate trench corner where the electric field is most concentrated. This improves reliability against degradation of element characteristics at high-temperature bias without sacrificing ON resistance, which is typically in a contradictory relationship, contributing to stable long-term operation in industrial equipment that demand superior quality.

3. Expanded lineup improves reliability while reducing design load in a wide range of applications

The 24-model lineup is offered in withstanding voltages of -40V/-60V ideal for factory automation, robotics, and commercial air conditioning systems. 

Application Examples

  • Power management switches and fan motors for industrial equipment, such as factory automation, robotics, and air conditioning systems. 
  • Power management switches and fan motors for large-scale consumer equipment

The MOSFETs are in mass production and available from ROHM Semiconductor. 

Going forward, ROHM will continue to develop a variety of packages that support application other than industrial equipment, including products optimised for the automotive sector. For 5G base stations and data centre servers, where demand is growing, ROHM is developing higher efficiency N-channel MOSFETs.