How to Use Mini Boost Converter HW-085 1.5A - 5/8/9/12V Fixed: Examples, Pinouts, and Specs

The Mini Boost Converter HW-085 is a compact DC-DC step-up module designed to increase a lower input voltage to a fixed higher output voltage. It supports four fixed output voltage levels: 5V, 8V, 9V, and 12V, selectable via a jumper. With a maximum output current of 1.5A, this module is ideal for powering devices that require a higher voltage than the input source can provide. Its small size and efficiency make it suitable for portable electronics, battery-powered projects, and DIY applications.

• Powering microcontrollers, sensors, and modules from a lower voltage source
• Boosting voltage from batteries (e.g., 3.7V Li-ion or 1.5V AA cells)
• DIY electronics projects requiring compact power solutions
• Portable devices and USB-powered gadgets

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 GND pin.
   • Ensure the input voltage is within the range of 2V to 24V.

2. Set the Desired Output Voltage:

   • Use the onboard jumper to select the desired output voltage (5V, 8V, 9V, or 12V).
   • Ensure the jumper is securely placed in the correct position.

3. Connect the Load:

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

4. Power On:

   • Turn on the input power source. The module will step up the input voltage to the selected output voltage.

• Input Voltage Range: Ensure the input voltage is within the specified range (2V to 24V). Exceeding this range may damage the module.
• Output Current Limit: The maximum output current is 1.5A, but it may vary depending on the input voltage and load. Avoid overloading the module.
• Heat Dissipation: At higher loads, the module may generate heat. Ensure adequate ventilation or consider adding a heatsink if necessary.
• Polarity Protection: The module does not have reverse polarity protection. Double-check connections before powering on.
• Noise Filtering: If using the module in sensitive circuits, consider adding capacitors at the input and output to reduce noise.

The Mini Boost Converter HW-085 can be used to power an Arduino UNO from a 3.7V Li-ion battery by stepping up the voltage to 5V.

• Connect the battery's positive terminal to VIN and negative terminal to GND.
• Set the jumper to the 5V position.
• Connect the VOUT pin to the Arduino's 5V pin and GND to the Arduino's GND pin.

// Example code to blink an LED connected to Arduino UNO
// Ensure the Mini Boost Converter is providing 5V to the Arduino

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

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:

   • Cause: Incorrect jumper configuration or loose connections.
   • Solution: Verify the jumper is set to the desired output voltage and check all connections.

2. Output Voltage is Incorrect:

   • Cause: Input voltage is too low or jumper is in the wrong position.
   • Solution: Ensure the input voltage is within the specified range and recheck the jumper setting.

3. Module Overheats:

   • Cause: Excessive load or poor ventilation.
   • Solution: Reduce the load current or improve ventilation around the module.

4. Load Does Not Power On:

   • Cause: Load requires more current than the module can provide.
   • Solution: Ensure the load's current requirement is within the module's 1.5A limit.

Q1: Can I use this module to charge a battery?
A1: No, this module is not designed for battery charging. It is a step-up converter for powering devices.

Q2: What happens if I reverse the input polarity?
A2: The module does not have reverse polarity protection and may be damaged. Always double-check connections.

Q3: Can I adjust the output voltage to a custom value?
A3: No, the output voltage is fixed to 5V, 8V, 9V, or 12V, as selected by the jumper.

Q4: Is the module suitable for audio applications?
A4: The module may introduce noise, so additional filtering may be required for sensitive audio circuits.