How to Use DC-DC Buck Converter 100W.6A 10-90V > 1.5V-60V [Bill Ludwig]: Examples, Pinouts, and Specs

The DC-DC Buck Converter (Part ID: 100W.6A 10-90V > 1.5V-60V) is a high-efficiency step-down voltage regulator designed to convert a higher input voltage (10-90V) to a lower output voltage (1.5V-60V). With a maximum output power of 100W and a current capacity of up to 6A, this converter is ideal for applications requiring stable and adjustable power delivery.

• Powering low-voltage devices from high-voltage sources
• Battery charging systems
• LED lighting systems
• DIY electronics projects
• Industrial automation and control systems
• Renewable energy systems (e.g., solar panels)

The following table outlines the key technical details of the DC-DC Buck Converter:

The DC-DC Buck Converter typically has the following input/output terminals:

1. Connect the Input Voltage:

   • Connect the positive terminal of your power source to the VIN+ pin.
   • Connect the negative terminal of your power source to the VIN- pin.
   • Ensure the input voltage is within the specified range (10V to 90V).

2. Connect the Load:

   • Connect the positive terminal of your load to the VOUT+ pin.
   • Connect the negative terminal of your load to the VOUT- pin.

3. Adjust the Output Voltage:

   • Use the onboard potentiometer to set the desired output voltage.
   • Turn the potentiometer clockwise to increase the voltage and counterclockwise to decrease it.
   • Use a multimeter to measure the output voltage for precise adjustment.

4. Power On:

   • Once all connections are secure, power on the input source.
   • Verify the output voltage and current to ensure proper operation.

• Heat Dissipation: At high power levels, the converter may generate significant heat. Use a heatsink or active cooling to prevent overheating.
• Input Voltage Range: Ensure the input voltage is always within the specified range to avoid damage to the converter.
• Current Limitation: Do not exceed the maximum output current of 6A to prevent overloading.
• Polarity: Double-check the polarity of all connections to avoid short circuits or damage.
• Load Compatibility: Ensure the connected load is compatible with the output voltage and current.

The DC-DC Buck Converter can be used to power an Arduino UNO from a higher voltage source. For example, if you have a 24V power supply, you can step it down to 5V to power the Arduino.

• Connect the 24V power supply to the VIN+ and VIN- terminals of the converter.
• Adjust the output voltage to 5V using the potentiometer.
• Connect the VOUT+ terminal to the Arduino's 5V pin and the VOUT- terminal to the Arduino's GND pin.

// Example code to blink an LED connected to pin 13
// Ensure the Arduino is powered via the DC-DC Buck Converter

void setup() {
  pinMode(13, OUTPUT); // Set pin 13 as an output
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. No Output Voltage:

   • Check the input voltage to ensure it is within the specified range.
   • Verify all connections, especially the polarity of the input and output terminals.
   • Ensure the potentiometer is not set to the minimum output voltage.

2. Overheating:

   • Ensure proper heat dissipation using a heatsink or fan.
   • Reduce the load current if it exceeds the converter's capacity.

3. Fluctuating Output Voltage:

   • Check for loose connections or poor solder joints.
   • Ensure the input voltage is stable and not fluctuating.

4. Load Not Powering On:

   • Verify the output voltage matches the load's requirements.
   • Check the load's current draw to ensure it does not exceed 6A.

Q: Can this converter be used to charge batteries?
A: Yes, but ensure the output voltage and current are set according to the battery's charging specifications.

Q: Is the output voltage adjustable while the converter is running?
A: Yes, the output voltage can be adjusted using the potentiometer, but do so carefully to avoid damaging the load.

Q: Can I use this converter with a solar panel?
A: Yes, as long as the solar panel's output voltage is within the converter's input range (10V to 90V).

Q: What happens if the input voltage exceeds 90V?
A: Exceeding the input voltage range may damage the converter. Always use a power source within the specified range.

Q: Does the converter have overcurrent or short-circuit protection?
A: This depends on the specific model. Check the datasheet or test the unit to confirm protection features.