Attention to Internet Explorer users: ROHM website does not recommend browsing in IE 11. Please use latest browser to ensure the best performance on ROHM website.
ROHM’s New Class-Leading* Low ON Resistance Nch MOSFETs: Delivering High Efficiency Operation in a Variety of Applications 40V-150V breakdown voltage lineup: ideal for motor drive and industrial power supplies
ROHM has developed Nch MOSFETs (40V/60V/80V/100V/150V) RS6xxxxBx / RH6xxxxBx series, 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 such as 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 RDS(on) of 2.1mΩ – approx. 50% lower than conventional – by increasing device performance and adopting the HSOP8/HSMT8 package featuring low-resistance copper clip connections. What’s more, improving the element gate structure reduces Qgd, which is generally in a trade-off relationship with RDS(on), by approx. 40% vs 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 approx. 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.
◇ 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
Online Sales Information
Sales Launch Date: January 2023 Pricing: $4.0/unit (samples, excluding tax) Online Distributors:Digi-Key, Mouser, and Farnell
Scheduled for release at other online distributors as well.
Online Distributors
Terminology
Nch MOSFET
A type of MOSFET that conducts when a positive voltage is applied to the Gate relative to the Source. Nch MOSFETs are more widely distributed in the market today due to their lower ON resistance (RDS(on)) over Pch variants, facilitating use in a broad range of circuits.
ON Resistance (RDS(on))
The resistance value between the Drain and Source while the MOSFET is ON. The smaller this value is, the lower the (power) loss during conduction.
Qgd (Gate-Drain Charge)
The amount of charge when charging the capacitance between the Gate and Drain after the MOSFET turns ON. Lower values allow for faster switching that leads to lower switching loss (power loss).
ROHM’s New Class-Leading* Low ON Resistance Nch MOSFETs:
Delivering High Efficiency Operation in a Variety of Applications
40V-150V breakdown voltage lineup: ideal for motor drive and industrial power supplies
*ROHM May 31st, 2023 study
May 31st, 2023
ROHM has developed Nch MOSFETs (40V/60V/80V/100V/150V) RS6xxxxBx / RH6xxxxBx series, 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 such as 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 RDS(on) of 2.1mΩ – approx. 50% lower than conventional – by increasing device performance and adopting the HSOP8/HSMT8 package featuring low-resistance copper clip connections. What’s more, improving the element gate structure reduces Qgd, which is generally in a trade-off relationship with RDS(on), by approx. 40% vs 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 approx. 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
Sheet
[V]
TC=25°C
[nC]
[mm]
HSOP8
(5.0×6.0×1.0)
HSMT8
(3.3×3.3×0.8)
Application Examples
Also suitable for a variety of power supply circuits and motor-equipped devices
Online Sales Information
Sales Launch Date: January 2023
Pricing: $4.0/unit (samples, excluding tax)
Online Distributors: Digi-Key, Mouser, and Farnell
Scheduled for release at other online distributors as well.
Online Distributors
Terminology
Video
Featured Products
Ideal for Base Station/Server Power Supplies and Industrial/Consumer Motor Drive
Low ON-Resistance Nch Power MOSFETs (Cu Clip Type)
RS6xxxx / RH6xxxx series (PDF:1.2MB)
Latest News
METI recognizes joint plan as supporting stable, sec ...