industry news
Subscribe Now

ROHM’s New Class-Leading Low ON Resistance N-Channel MOSFETs: Delivering High Efficiency Operation in a Variety of Applications

40V to 150V breakdown voltage lineup, ideal for motor drive and industrial power supplies

Santa Clara, CA and Kyoto, Japan, May 31, 2023 (GLOBE NEWSWIRE) — ROHM Semiconductor today announced the RS6xxxxBx / RH6xxxxBx series of N-channel MOSFETs (40V/60V/80V/100V/150V; 13 part numbers) suitable for applications operating on 24V/36V/48V power supplies, such as base stations, servers, and motors for industrial and consumer equipment.

In recent years, worldwide power consumption has been on the rise, driving the need for industrial equipment (e.g., servers and base stations, along with various motors) to become more efficient. In a number of these applications that utilize medium voltage MOSFETs, used in a variety of circuits, manufacturers are demanding even lower power losses. However, general MOSFETs are characterized by two main parameters leading to power losses: ON resistance (RDS(on)), which is inversely proportional to chip size, and Gate-drain charge (Qgd) that increases proportionally with chip size, making it challenging to achieve both. ROHM has improved the trade-off between the two by adopting copper clip connections and improving the gate structure.

The new MOSFETs achieve an industry-leading[1] RDS(on) of 2.1mΩ – approximately 50% lower than conventional MOSFETs – by increasing device performance and adopting the HSOP8/HSMT8 package featuring low-resistance copper clip connections. In addition, improving the element gate structure reduces Qgd, which is generally in a trade-off relationship with RDS(on), by approximately 40% versus conventional products (comparing typical values for RDS(on) and Qgd for 60V HSOP8 package products). These improvements reduce both switching and conduction losses, greatly contributing to higher application efficiency. As an example, when comparing the efficiency of a power supply evaluation board for industrial equipment, ROHM’s new products achieve an industry-leading efficiency of approximately 95% (peak) in the output current range during steady-state operation.

Going forward, ROHM will continue to develop MOSFETs with even lower RDS(on) that reduce power consumption in a variety of applications, contributing to solving social issues such as environmental protection through energy conservation.

Product Lineup

Applications

  • Power supplies for servers and communication base stations
  • Motors for industrial and consumer products
  • Also suitable for a variety of power supply circuits and motor-equipped devices

Leave a Reply

featured blogs
Jul 20, 2024
If you are looking for great technology-related reads, here are some offerings that I cannot recommend highly enough....

featured video

Larsen & Toubro Builds Data Centers with Effective Cooling Using Cadence Reality DC Design

Sponsored by Cadence Design Systems

Larsen & Toubro built the world’s largest FIFA stadium in Qatar, the world’s tallest statue, and one of the world’s most sophisticated cricket stadiums. Their latest business venture? Designing data centers. Since IT equipment in data centers generates a lot of heat, it’s important to have an efficient and effective cooling system. Learn why, Larsen & Toubro use Cadence Reality DC Design Software for simulation and analysis of the cooling system.

Click here for more information about Cadence Multiphysics System Analysis

featured paper

Navigating design challenges: block/chip design-stage verification

Sponsored by Siemens Digital Industries Software

Explore the future of IC design with the Calibre Shift left initiative. In this paper, author David Abercrombie reveals how Siemens is changing the game for block/chip design-stage verification by moving Calibre verification and reliability analysis solutions further left in the design flow, including directly inside your P&R tool cockpit. Discover how you can reduce traditional long-loop verification iterations, saving time, improving accuracy, and dramatically boosting productivity.

Click here to read more

featured chalk talk

Advancements in Motor Efficiency Enables More Sustainable Manufacturing
Climate change is encouraging the acceleration of sustainable and renewable manufacturing processes and practices and one way we can encourage sustainability in manufacturing is with the use of variable speed drive motor control. In this episode of Chalk Talk, Amelia Dalton chats with Maurizio Gavardoni and Naveen Dhull from Analog Devices about the wide ranging benefits of variable speed motors, the role that current feedback plays in variable speed motor control, and how precision measurement solutions for current feedback can lead to higher motor efficiency, energy saving and enhanced sustainability.
Oct 19, 2023
33,011 views