How to Use ZHIYU ZPB30A1P: Examples, Pinouts, and Specs

The ZHIYU ZPB30A1P is a compact and efficient DC-DC buck converter module designed for step-down voltage regulation. It is capable of delivering a stable output voltage with adjustable settings, making it ideal for a wide range of electronic applications. This module is particularly useful in projects requiring precise voltage regulation, such as powering microcontrollers, sensors, and other low-voltage devices from higher voltage sources.

• Powering microcontrollers (e.g., Arduino, Raspberry Pi) from higher voltage sources
• Voltage regulation for battery-powered devices
• Driving low-voltage sensors and modules
• DIY electronics projects requiring adjustable voltage outputs
• Industrial and automotive applications for stable power delivery

The ZHIYU ZPB30A1P offers robust performance with the following key specifications:

The ZHIYU ZPB30A1P module has four main pins for input and output connections:

1. Connect the Input Voltage:

   • Connect the VIN+ pin to the positive terminal of your power source (4.5V to 30V).
   • Connect the VIN- pin to the ground terminal of your power source.

2. Connect the Output Voltage:

   • Connect the VOUT+ pin to the positive terminal of the load (e.g., microcontroller, sensor).
   • Connect the VOUT- pin to the ground terminal of the load.

3. Adjust the Output Voltage:

   • Use the onboard potentiometer to adjust the output voltage.
   • Turn the potentiometer clockwise to increase the output voltage and counterclockwise to decrease it.
   • Use a multimeter to measure the output voltage while adjusting to ensure accuracy.

4. Ensure Proper Heat Dissipation:

   • If the module is operating near its maximum current (3A), ensure adequate heat dissipation by attaching a heatsink or providing proper airflow.

• Input Voltage Range: Ensure the input voltage is within the specified range (4.5V to 30V) to avoid damaging the module.
• Output Voltage Adjustment: Always measure the output voltage with a multimeter before connecting sensitive devices.
• Current Limitation: Do not exceed the maximum output current of 3A. Use a heatsink if operating at high currents for extended periods.
• Polarity: Double-check the polarity of the input and output connections to prevent damage to the module or connected devices.

The ZHIYU ZPB30A1P can be used to power an Arduino UNO from a 12V power source. Here's how to set it up:

1. Connect the 12V power source to the VIN+ and VIN- pins of the module.
2. Adjust the output voltage to 5V using the potentiometer.
3. Connect the VOUT+ pin to the Arduino's 5V pin and the VOUT- pin to the Arduino's GND pin.

Below is an example code to blink an LED connected to the Arduino UNO, powered by the ZHIYU ZPB30A1P:

// This code blinks an LED connected to pin 13 of the Arduino UNO.
// Ensure the ZHIYU ZPB30A1P is set to output 5V to power the Arduino.

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

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: Input voltage is not connected or is below 4.5V.
   • Solution: Verify the input voltage and connections.

2. Output Voltage Not Adjustable:

   • Cause: Potentiometer is damaged or not functioning.
   • Solution: Check the potentiometer for physical damage and replace if necessary.

3. Overheating:

   • Cause: Module is operating at high current without proper heat dissipation.
   • Solution: Attach a heatsink or improve airflow around the module.

4. Connected Device Not Powering On:

   • Cause: Output voltage is not set correctly.
   • Solution: Measure and adjust the output voltage to match the device's requirements.

Q: Can the ZHIYU ZPB30A1P be used to charge batteries?
A: Yes, but ensure the output voltage is set to the appropriate charging voltage for the battery type, and use additional circuitry to manage charging current and prevent overcharging.

Q: What is the efficiency of the module at low loads?
A: The efficiency is typically lower at very low loads but can reach up to 92% at optimal load conditions.

Q: Can I use this module with a 24V input to power a 5V device?
A: Yes, the module can step down 24V to 5V. Ensure the output voltage is adjusted correctly before connecting the device.

Q: Is the module protected against reverse polarity?
A: No, the ZHIYU ZPB30A1P does not have built-in reverse polarity protection. Always double-check connections before powering the module.