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ROHM BM2SCQ12xT-LBZ Series AC/DC converter ICs

With an industry-first built-in 1700V SiC MOSFET

The Rohm BM2SCQ12xT-LBZ is a series of AC/DC converter ICs that integrate a 1700V SiC MOSFET, which is an industry first.

This series of converter ICs enables breakthrough energy savings and facilitates efficient AC/DC converter design by resolving many of the issues encountered by designers using discrete solutions.

Part count significantly reduced

Incorporating a SiC MOSFET and control circuitry optimized for auxiliary power supplies for industrial equipment in a single package significantly reduces the number of parts required when compared to the conventional designs (from 12pcs plus heat sink to a single IC).

Minimized risk

The Rohm BM2SCQ12xT-LBZ also minimizes both the component failure risk and the amount of resources required to develop systems using SiC MOSFETs. In addition, this converter IC portfolio enables the improvement of power efficiency by 5% (and decreasing power loss by 28%). These features translate to dramatic reduction in size, improved reliability, and superior power savings in industrial applications.

BM2SCQ12xT-LBZ Key Advantages

  1. Breakthrough miniaturization is enabled by replacing 12 components and heat sink with a single package
  2. Development resources and design risks are reduced while providing multiple built-in protection functions that enable superior reliability
  3. SiC MOSFET performance is optimized to achieve dramatically improved power savings
ROHM BM2SCQ12xT-LBZ Series AC/DC converter ICs

BM2SCQ12xT-LBZ Key Specifications

  • Operating Power Supply Voltage Range:
    VCC: 15.0 V to 27.5 V
    DRAIN: 1700 V (Max)
  • Normal Operating Current: 2000 µA (Typ)
  • Burst Operating Current: 500 µA (Typ)
  • Maximum Operating Frequency: 120 kHz (Typ)
  • Operating Temperature: -40 °C to +105°C

BM2SCQ12xT-LBZ Features

  • Long Time Support Product for Industrial Applications
  • 6 Pins: TO220-6M Package
  • Built-in 1700 V/4 A/1.12 Ω SiC-MOSFET
  • Quasi-resonant Type (Low EMI)
  • Frequency Reduction Function
  • Low Current Consumption (19 µA) during Standby
  • Burst Operation at Light Load
  • SOURCE Pin Leading Edge Blanking
  • VCC UVLO (Under Voltage Lockout protection)
  • VCC OVP (Over Voltage Protection)
  • Over Current Protection Circuit per Cycle
  • Soft Start Function
  • ZT Pin Trigger Mask Function
  • ZT OVP (Over Voltage Protection)

BM2SCQ12xT-LBZ Applications

  • General-purpose inverters
  • AC servos
  • PLCs (Programmable Logic Controllers)
  • Manufacturing equipment
  • Robots
  • Industrial lighting (i.e. street lamps)


BM2SCQ12xT-LBZ Block Diagram

ROHM BM2SCQ12xT-LBZ Series AC/DC converter ICs Block Diagram

BM2SCQ12xT-LBZ Typical Application Circuit

ROHM BM2SCQ12xT-LBZ Series AC/DC converter ICs Typical Application Circuit


BM2SCQ123T-LBZ Reference Board: BM2SCQ123T-EVK-001

Built-in SiC MOSFET Isolation Fly-back Converter QR method Output 48 W 24 V BM2SCQ123T Reference Board

The BM2SCQ123T-EVK-001 evaluation board outputs 24 V voltage from the input of 300 to 900 Vdc. The output current supplies up to 2.0 A. The BM2SCQ123T which is quasi-resonant method DC/DC converter IC built-in 1700 V SiC MOSFET (Silicon-Carbide) is used. The BM2SCQ123T contributes to low EMI by soft switching in quasi-resonant method. The integrated 1700 V 4 A SiC MOSFET contributes to ease of power supply design. Built-in burst mode reduces power loss at light loads. The BM2SCQ123T is a ranked product that guarantees a long-term supply for the industrial equipment market.

ROHM BM2SCQ123T-LBZ Reference Board - BM2SCQ123T-EVK-001
ROHM's BM2SCQ12x Family of 1700V SiC ACDC Converters