24-48V to 5V – 3A DC-DC Converter

  • Rajkumar Sharma
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  • SKU: EL69224
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This is a 24-48V input voltage range 3A output current DC-DC Converter using BD9G341AEFJ IC from ROHM semiconductor. This IC is ideal for high-voltage to low-voltage converter with 3A output current. The pin configuration of the board with 3 Pin horizontal mounting of the regulator is similar to the LM7805 LDO regulator and is suitable to use this IC as a replacement which provides more current and takes high voltage input.

Different voltage outputs are possible by changing a few components. Refer to the datasheet for the same. Example circuit can provide 5.1V/3A with an input supply range of 24-48V DC and an operating frequency of 200KHz.

The BD9G341AEFJ is a buck-switching regulator with integrated 150mΩ power MOSFET. The current mode architecture provides a fast transient response and a simple phase compensation setup. The operating frequency is programmable from 50kHz to 750kHz. Additional protection features are included such as Over Current Protection, Thermal shutdown, and under-voltage lockout. The under-voltage lockout and hysteresis can be set by an external resistor.

Note: Refer to the datasheet to change the output voltage and input voltage.

Features

  • Supply 24-48V DC Input (12-76V Range)
  • Output 5.1V/3A
  • Pin Configuration is direct replacement LM7805
  • Frequency 200kHz.

Schematic

Parts List

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5 Comments
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sandeep thorvat

hi i need this power supply pcb can you give price.

thanks
sandeep

stumblor

Hi – thanks for this, looks great! Would it be possible for you to supply the BOM as a CSV please, rather than the image?

Leslie Marshall

SR,QNTY,REF,DESC
1,1,CN1,3 Pin Header Connector
2,2,C1/C6, 0.1uF SMD 0805
3,2,C2/C3, 4.7uf/100V SMD 1210
4,2,C4/C5, 47uF/10V SMD 1210
5,1,D1, RB095GM-90FHTL DPAK
6,1,L1, 33uH 4.5A WURTH
7,1,R1, 110K SMD 0805
8,1,R2, 8K2 SMD 0805
9,1,R3, 27K SMD 0805
10,1,R4, 3K3 SMD 0805
11,1,R5, 47K SMD 0805
12,1,R6, 2K SMD 0805
13,1,U1, BD9G341AEFJ SMD SO8

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