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REFACDC034 - Reference Design

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

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.


Design Resources



Board Number Input voltage Output voltage Maximum output power Output current range Stand-by Power Efficiency Output ripple voltage Size Operating Temperature
BM2SCQ123T-EVK-001 300 to 900Vdc 24.0V 48W Iout=2A 0.0 to 2.0A *1 310mW Iout=0A 90% Iout=2A 100mVpp *2 60mm x 160mm -10 to 65deg.C
*1 Please adjust operating time, within any parts surface temperature under 105 °C
*2 Not include spike noise

Distribution Inventory

Board Number Distributor Quantity Available
BM2SCQ123T-EVK-001 Ameya Holding Limited 2
Chip One Stop, Inc. 2
CoreStaff Co., Ltd. 2
DigiKey 1

Key Components

Board Number Part Number Product Category Datasheet Status SPICE LTspice® ? Thermal Model Symbol & Footprint 3D STEP Samacsys ECAD Library Calc Tool ROHM Solution Simulator
BM2SCQ123T-EVK-001 1SS355VM Switching Diodes - Recommended - - - - -
BM2SCQ123T-EVK-001 BM2SCQ123T-LBZ AC/DC Converters ICs - Recommended - - - -
BM2SCQ123T-EVK-001 LTR100JZPFL Current Detection Resistors - Recommended -
BM2SCQ123T-EVK-001 RFUH25TB3SNZ Fast Recovery Diodes - Active - -
BM2SCQ123T-EVK-001 RRE02VSM4S Standard Rectifier Diodes - Recommended - - - - -