How to Use DC-DC Converter DDR-60L-24: Examples, Pinouts, and Specs

The Mean Well DDR-60L-24 is a compact, high-efficiency DC-DC converter designed to step down voltage levels while providing a stable 24V DC output. This component is ideal for applications requiring reliable power conversion in industrial control systems, telecommunications, and distributed power architectures. Its robust design ensures high performance and durability in demanding environments.

• Industrial automation and control systems
• Telecommunications equipment
• Distributed power systems
• Battery-powered devices
• Renewable energy systems (e.g., solar or wind power setups)

The following table outlines the key technical details of the DDR-60L-24:

The DDR-60L-24 features a screw terminal block for input and output connections. The pin configuration is as follows:

1. Input Voltage Connection: Connect the input voltage source (9 ~ 36V DC) to the +V Input and -V Input terminals. Ensure the input voltage is within the specified range to avoid damage.
2. Output Voltage Connection: Connect the load to the +V Output and -V Output terminals. The load should not exceed the maximum output current of 2.5A.
3. Mounting: Secure the DDR-60L-24 to a DIN rail or a suitable mounting surface. Ensure proper ventilation to prevent overheating.
4. Power On: After verifying all connections, power on the input source. The converter will provide a stable 24V DC output.

• Input Voltage Range: Always ensure the input voltage is within the 9 ~ 36V DC range. Exceeding this range may damage the converter.
• Load Requirements: Do not exceed the maximum output current of 2.5A to prevent overloading.
• Ventilation: Install the converter in a well-ventilated area to maintain optimal operating temperature.
• Polarity: Double-check the polarity of input and output connections to avoid reverse polarity damage.
• Protection Features: The DDR-60L-24 includes built-in protection for overload, overvoltage, and short circuits. However, it is recommended to use external fuses for additional safety.

The DDR-60L-24 can be used to power an Arduino UNO by stepping down a higher DC voltage (e.g., 12V or 24V) to a stable 24V output. Below is an example circuit and code:

1. Connect a 12V DC power source to the +V Input and -V Input terminals of the DDR-60L-24.
2. Connect the +V Output terminal to the Arduino's VIN pin.
3. Connect the -V Output terminal to the Arduino's GND pin.

// Example code for Arduino UNO powered by DDR-60L-24
// This code blinks an LED connected to pin 13

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

   • Cause: Input voltage is outside the specified range.
   • Solution: Verify the input voltage is between 9 ~ 36V DC.

2. Overheating

   • Cause: Insufficient ventilation or excessive load.
   • Solution: Ensure proper airflow around the converter and reduce the load to within the specified limits.

3. Output Voltage Fluctuations

   • Cause: Unstable input voltage or excessive load.
   • Solution: Use a stable input power source and ensure the load does not exceed 2.5A.

4. Short Circuit Protection Triggered

   • Cause: Output terminals are shorted.
   • Solution: Disconnect the load, check for shorts, and reconnect after resolving the issue.

Q: Can the DDR-60L-24 be used with a 48V input?
A: No, the maximum input voltage is 36V DC. Using a 48V input may damage the converter.

Q: Is the DDR-60L-24 suitable for outdoor use?
A: The DDR-60L-24 is not weatherproof. If outdoor use is required, ensure it is housed in a weatherproof enclosure.

Q: Can I use the DDR-60L-24 to charge a battery?
A: The DDR-60L-24 is not designed as a battery charger. Use a dedicated battery charging circuit for this purpose.

Q: What happens if the load exceeds 2.5A?
A: The overload protection will activate, and the output will shut down to protect the converter. Reduce the load and restart the converter.