News Article

Rohm Announces AC/DC Converters With Built-In 1700V SiC MOSFET


New BM2SC12xFP2-LBZ power ICs are designed for auxiliary power supply for street lamps, commercial air-conditioning systems, general-purpose inverters and for AC servo drives

Rohm has announced a range of AC/DC converter ICs with a built-in 1700V SiC MOSFET in a surface mount package. The devices are optimised for industrial applications focusing on auxiliary power supply for street lamps, commercial air-conditioning systems, general-purpose inverters and for AC servo drives.

An auxiliary power supply is an essential and vital part of industrial applications to deliver different levels of DC voltages for gate drivers and control units. By applying existing Si MOSFET devices, the designer cannot achieve higher efficiency and increased out power because of the higher losses of Si devices. The existing solutions require a heatsink and additional components which increase both the losses of the devices and the size of the system by additional space. To design an auxiliary power supply with existing Si devices will also be expensive because of a larger Bill of Material (BOM).

Rohm's BM2SC12xFP2-LBZ power ICs are Quasi-resonant (QR) AC/DC converters with an integrated 1700V SiC MOSFET in a single compact TO263 surface mount package.

These ICs are said to be the right fit and best in class products for industrial auxiliary power supply solutions in terms of efficiency, shortening design time, simplifying the circuitry and reducing additional components by offering integrated solutions. These ICs also increase product reliability by minimising the risk of component failure.

When used in 400VAC 48W output auxiliary power supplies, besides enabling automatic board mounting that was not previously possible, the number of external parts can be significantly reduced compared with standard configurations - from 12 parts and heat sink to just one.

At the same time, adopting a SiC MOSFET improves power efficiency by up to 5 percent and minimises the risk of component failure. This makes it possible to dramatically increase reliability and energy savings in industrial equipment while significantly reducing mounting area and costs.

Rohm's Evaluation board BM2SC123FP2-EVK-001 using the AC/DC BM2SC123FP2-LBZ IC is available to support designers. This board delivers power up to 48W at 400VAC without any heatsink. The test result of the evaluation board shows the output voltage (24V) is constant and independent from input voltage.

CS International to return to Brussels – bigger and better than ever!

The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.

Join us face-to-face on 9-10 November 2021

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!


New High Current Variable Test Power Supplies
Low RDS(on) 40 V MOSFETs From Nexperia Deliver Highest Power Density
Construction Begins On First-of-its-kind Electric Vehicle Battery Technology Centre And Pilot Line
Cost-Efficient, Regulated SIP8 DC/DC Converters
Toshiba Expands Scope Of Its Solid-State LiDAR Solution To Address Transportation Infrastructure Monitoring
Chokes From SMP For Medical Technology Applications
Efficient Power Conversion Announces New Family Of Radiation-Hardened Enhancement-Mode Gallium Nitride (eGaN) Transistors
Renesas Expands Portfolio Of World’s Smallest Photocouplers
ROHM’s High 8V Gate Withstand Voltage Marking Technology Breakthrough
Melexis Announces Latest Triaxis Position Sensor Together With New PCB-less Packages
Ultra High Density Offline Power Solutions From ON Semi
Yokogawa Launches New AC Energy Calibration Service
ON Semi Announces SiC MOSFET Modules For Charging EVs
Navitas 'Electrify Our World' At APEC 2021
Menlo Micro Launches Industry’s First 40 Gbps DPDT Differential Switch
Rohm Announces AC/DC Converters With Built-In 1700V SiC MOSFET
PCB Depaneling: Laser Technology Improves Quality And Efficiency For Automotive Applications
Zollner Opts For New 3D AXI Generation IX7059 From Viscom
APEC 2022 Call For Technical Paper Digest Submissions
GeneSiC Announces 5th Gen 650V SiC Diodes
Hitachi ABB Power Grids Announces Sustainability 2030
GeneSiC Announces 3rd Gen 750V SiC MOSFETs
Schneider Electric Unleashes EcoStruxure Power To Deliver Reliable “always-on” Electrical Power
Pfeiffer Vacuum Is A Partner Of The Kems4Bats Junior Research Group Of The German Federal Ministry Of Education And Research

Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the Power Electronics World Magazine, the Power Electronics World Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
Live Event