Rohm Semiconductor

ROHM BM2SC12xFP2-LBZ AC-DC Converter ICs

Featuring high creepage and clearance

ROHM Semiconductor has released the BM2SC12xFP2-LBZ, a series of AC-DC converter ICs for auxiliary power supplies in industrial applications, in a new surface-mount package which offers high creepage and clearance distances.


These ICs integrate a 1,700V Silicon Carbide (SiC) MOSFET with a quasi-resonant controller to offer an efficient power-conversion solution in a compact TO-263-7L package. The integrated MOSFET benefits from the excellent switching and conduction properties of the SiC material, and features low on-resistance of just 1.12Ω.


The package is particularly suitable for applications with high creepage and clearance requirements: clearance between pins is 7.33mm, and board creepage distance is 6.89mm. Quasi-resonant operation produces low EMI emissions, to enable implementation of the device in noise-sensitive applications.


The BM2SC12xFP2-LBZ converters are covered by ROHM’s longevity policy which provides for long-term supply to industrial customers.


  • Frequency reduction function
  • 19µA current in stand-by mode
  • Burst operation in light-load conditions
  • Protection functions:
    • Under-voltage lock-out
    • Over-voltage
    • Over-current
  • Soft-start
  • Operating-temperature range: -40°C to 105°C


  • Auxiliary power supplies
  • Charging stations
  • Solar inverters
  • Servo drives
  • Uninterruptible power supplies

Evaluation Board

Board part number: BM2SCQ123T-EVK-001

The BM2SCQ123T-EVK-001 evaluation board supplies a 24V/2A output from an input in a range between 300V and 900V DC.

ROHM BM2SC12xFP2-LBZ AC-DC converters

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