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XL4016 4V-38V to 1.25V-36V 8A Step Down Buck Power Supply Module Voltmeter
This PWM buck (step-down) DC/DC converter module provides 1.25V to 36V continuously adjustable output voltage at up to 8A peak / 5A continuous current with high efficiency, low ripple and excellent line and load regulation. An onboard multi-turn potentiometer is used to adjust the output voltage level.
It features a 3-character digital display which displays the output voltage. An onboard trim potentiometer can be used to calibrate the display if needed.
This module is ideal for regulating 12V, 18V or 24V battery voltage down to the 12V, 9V, 5V or 3.3V levels required by many electronic circuits. For example, it could step a 12V car battery down to 5V for USB-powered devices such as cell phones or Arduino microcontrollers.
Specifications
- Input voltage range: 4V to 38VDC
- Output voltage range: 1.25V to 36VDC adjustable via onboard multi-turn potentiometer
- Output current: 0A to 5A continuous, 8A peak
- Maximum output power: 200W
- Efficiency: Up to 94%
- Built-in thermal shutdown function
- Built-in current limit function
- Built-in output short protection function
- Dimensions (approximate): 64mm x 47mm 26MM (L x W x H)
- Weight: 45g
Operation
- Turn off the input voltage source and connect it to the IN+ and IN- screw terminals. Ensure that the input voltage is less than 38V DC, then turn on the input power. The module’s voltage display will illuminate and display the OUTPUT voltage that the module is set to.
- Adjust the output voltage by turning the blue 10-turn potentiometer, turning it counter-clockwise to reduce the voltage, and clockwise to increase the voltage. Note that if the potentiometer is at the end of its setting, it may need to be turned multiple revolutions before the output voltage will begin to change.
- Turn off the input voltage, connect the module to the load using the OUT+ and OUT- screw terminals, then turn on the input voltage.
Meter Calibration
The meter can be calibrated by monitoring the output voltage using a calibrated voltmeter, and adjusting the displayed meter voltage using the small board-mounted potentiometer to match your voltmeter.
Operating Notes
This is a buck (step-down) converter, therefore the input voltage must be at least ~2V greater than the output voltage.
Always set the output voltage and current before connecting a load.
The output voltage adjustment potentiometer may need to be turned multiple revolutions before the output voltage will begin to change.
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