Rohm Breadcrumb

Rohm Referencedesigns

REFACDC046 - Reference Design

Flyback Type PWM Mode Isolated 12V 1.4A 16.8W

This reference design uses BM2P13B1J.

  • This evaluation board outputs an isolated voltage of 12 V from an input of 90 Vac to 264 Vac, and the maximum output current is 1.4 A.
  • BM2P13B1J-Z which is PWM method DC/DC converter IC built-in 730 V MOSFET is used.
  • Built-in the low on resistor (1.0 Ω) and high voltage tolerant MOSFET (730 V) make designs easy.
  • PWM controller for AC / DC power supplies, the BM2P13B1J provides the optimum system for all products with outlets.


Design Resources



Board Number Input Voltage Range Input Frequency Output Voltage Output Current Range Maximum Output Power Standby Input Power Power supply efficiency Output Ripple Voltage Oprating Temperature
BM2P13B1J-EVK-001 90 to 264Vac 47 to 63Hz 12.0V(Typ) 0 to 1.4A 16.8W(Max) Iout = 1.4A 50mW(Typ) Iout=0A 86.7%(Typ) 0.07Vpp(Typ) BW=20MHz *1 -10 to 65deg.C
*1 Not include spike noise

Distribution Inventory

Board Number Distributor Quantity Available
BM2P13B1J-EVK-001 Mouser Electronics Inc. 5
Chip One Stop, Inc. 2
CoreStaff Co., Ltd. 2
DigiKey 2
Ameya Holding Limited 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
BM2P13B1J-EVK-001 BM2P13B1J-Z AC/DC Converters ICs - Recommended - - -
BM2P13B1J-EVK-001 RFN1LAM7S Fast Recovery Diodes - Recommended - - - - -
BM2P13B1J-EVK-001 RRE02VSM4S Standard Rectifier Diodes - Recommended - - - - -
BM2P13B1J-EVK-001 RB088BGE150 Schottky Barrier Diodes - Recommended - - -
BM2P13B1J-EVK-001 LTR100JZPFL Current Detection Resistors - Recommended -
BM2P13B1J-EVK-001 ESR18EZPJ High Reliability Resistors - Recommended -