Buck Converter 12V-76V Input, 5V DC Output
A buck converter board has been developed utilizing the BD9G341AEFJ, a non-synchronous DC/DC converter. This board accepts a wide input voltage range of 12V to 76V DC and generates a regulated 5V DC output. The BD9G341AEFJ features an integrated 150mΩ N-channel MOSFET and a programmable switching frequency, adjustable from 50kHz to 750kHz. On this board, the switching frequency is fixed at 200kHz using resistor R5. To ensure reliable operation, the board incorporates several protection features. A fixed soft-start circuit minimizes inrush current during startup. Additionally, the board includes Under-Voltage Lockout (UVLO), Thermal Shutdown Detection (TSD), Over-Current Protection (OCP), and Over-Voltage Protection (OVP) circuits. The UVLO threshold and hysteresis are configured externally using resistors R1 and R4 connected to the EN (Enable) pin.
Features
- Input 12V to 76V DC
- Output 5V DC
- Output Current 2A, up to 3A (Read Note)
- Operating Frequency 200Khz
- On Board Power LED
- Precision EN/UVLO Threshold +/-3%
- Under Voltage Lockout (UVLO), Threshold 11V
- Soft Start Function (20mS)
- Over Current Protection (OCP)
- Thermal Shutdown (TSD)
- Over Voltage Protection (OVP)
- Screw Terminals for Power Input and Output
- PCB Dimensions 45.09 x 19.84 mm
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A buck converter board has been developed utilizing the BD9G341AEFJ, a non-synchronous DC/DC converter. This board accepts a wide input voltage range of 12V to 76V DC and generates a regulated 5V DC output. The BD9G341AEFJ features an integrated 150mΩ N-channel MOSFET and a programmable switching frequency, adjustable from 50kHz to 750kHz. On this board, the switching frequency is fixed at 200kHz using resistor R5. To ensure reliable operation, the board incorporates several protection features. A fixed soft-start circuit minimizes inrush current during startup. Additionally, the board includes Under-Voltage Lockout (UVLO), Thermal Shutdown Detection (TSD), Over-Current Protection (OCP), and Over-Voltage Protection (OVP) circuits. The UVLO threshold and hysteresis are configured externally using resistors R1 and R4 connected to the EN (Enable) pin.
Features
- Input 12V to 76V DC
- Output 5V DC
- Output Current 2A, up to 3A (Read Note)
- Operating Frequency 200Khz
- On Board Power LED
- Precision EN/UVLO Threshold +/-3%
- Under Voltage Lockout (UVLO), Threshold 11V
- Soft Start Function (20mS)
- Over Current Protection (OCP)
- Thermal Shutdown (TSD)
- Over Voltage Protection (OVP)
- Screw Terminals for Power Input and Output
- PCB Dimensions 45.09 x 19.84 mm
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