REFACDC010 - Reference Design

Non-Isolation Buck Converter PWM method Output 10W 16.5V

The BM2P161W-EVK-001 evaluation board outputs 16.5V voltage from the input of 90Vac to 264Vac. The output current supplies up to 0.6A. BM2P161W which is PWM method DC/DC converter IC built-in 650V MOSFET is used.


  • The BM2P0161 contributes to low power consumption by built-in a 650V starting circuit. Built-in current detection resistor and feed-back circuit realize 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 65kHz 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 1.9Ω 650V MOSFET built-in contributes to low power consumption and easy design.
  • The flywheel diode is a fast recovery diode of 3A/600V RFN3BM6S, contributing to low power consumption.
  • The conducted emission test is based on CISPR 22 Class B with best EMI design.

BM2P161W-EVK-001

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Design Resources

 

Specifications

 
Board Number Input voltage Input Frequency Output voltage Maximum output power Output current range Stand-by Power Efficiency Output ripple voltage Size Operating Temperature
Board NumberBM2P161W-EVK-001
Input voltage 90 to 264Vac
Input Frequency47 to 63Hz
Output voltage16.5V(Typ.)
Maximum output power9.9W Iout=600mA
Output current range0 to 600mA *1
Stand-by Power45mW Iout=0A
Efficiency0.847
Output ripple voltage69mVpp *2
Size30mm x 91mm
Operating Temperature-10 to 65deg.C
Remarks:
*1 Please adjust operating time, within any parts surface temperature under 105 °C
*2 Not include spike noise

Distribution Inventory

 
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Key Components

 
Board Number Product Category Part Number Datasheet Status SPICE LTspice® ? Thermal Model Symbol & Footprint 3D STEP Samacsys ECAD Library Calc Tool ROHM Solution Simulator
BM2P161W-EVK-001 AC/DC Converters ICs BM2P161W-Z - Recommended - - - -
BM2P161W-EVK-001 Standard Rectifier Diodes RRE02VSM6S - Recommended - - - - -