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REFACDC024 - Reference Design

Isolation Fly-back type PWM method Output 30W 24V

The BM2P016T-EVK-001 evaluation board outputs 24V voltage from the input of 90Vac to 264Vac. The output current supplies rated 1A and up to 1.25A. BM2P016T which is PWM method DC/DC converter IC built-in 650V MOSFET is used.

  • The BM2P16T contributes to low power consumption by built-in a 650 V starting circuit. Built-in current detection resistor realizes compact power supply design.
  • Current mode control imposes current limitation on every cycle, providing superior performance in bandwidth and transient response.
  • The switching frequency is 65 kHz in fixed mode. At light load, frequency is reduced and high efficiency is realized.
  • Built-in frequency hopping function contributes to low EMI. Low on-resistance 1.4 Ω 650 V MOSFET built-in contributes to low power consumption and easy design.
  • The flywheel diode is a fast recovery diode of 6A/200 V RFN6BM2D, contributing to low power consumption.
  • The conduction / radiation emission test is based on CISPR 22 Class B with best EMI design.


Design Resources



Board Number Input Voltage Range Input Frequency Output Voltage Rated Power Maximum Output Power Output Current Range Stand-by Power Efficiency Output Ripple Voltage Operating temperature range
BM2P016T-EVK-001 85 to 264Vac 47 to 63Hz 24V(Typ.) 24W 30W Iout=1.25A *1 0 to 1.25A 230mW Iout=0A 0.895 163mVpp *2 -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
BM2P016T-EVK-001 CoreStaff Co., Ltd. 3
Chip One Stop, Inc. 1
CoreStaff Co., Ltd. 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
BM2P016T-EVK-001 BM2P016T AC/DC Converters ICs - Recommended - -
BM2P016T-EVK-001 RF05VAM2S Fast Recovery Diodes - Recommended - - - - -
BM2P016T-EVK-001 RFU02VSM8S Fast Recovery Diodes - Recommended - - - - -
BM2P016T-EVK-001 RFN6BM2D Fast Recovery Diodes - Recommended - - - -