DEWIN DC 6-36V to 0.6-36V 80W 5A Step-Up/Step-Down Converter User Manual

1. Introduction

This manual provides detailed instructions for the safe and efficient operation of your DEWIN DC 6-36V to 0.6-36V 80W 5A Step-Up/Step-Down Converter. Please read this manual thoroughly before use and retain it for future reference.

Image: The DEWIN DC Step-Up/Step-Down Converter, showing its compact design with an LCD screen and connection terminals.

2. Product Features

• Adjustable Step-Up/Step-Down Conversion: Input voltage range DC 6-36V; output voltage range DC 0.6-36V; output current range 0-5A; maximum output power 80W.
• Full-Angle LCD Display: Upgraded 2.0 version features a clear LCD screen that simultaneously displays voltage, current, and power, eliminating the need for frequent switching.
• Efficient Heat Dissipation: Equipped with a thick heatsink, securely fastened with screws, ensuring improved heat dissipation and operational stability.
• Multiple Protection Mechanisms: Includes reverse polarity protection, anti-backflow protection, undervoltage protection, overvoltage protection, overcurrent protection, overtemperature protection, and overpower protection for safe and reliable use.
• Versatile Application: Suitable for laboratory power supplies, outdoor camping, electric scooters, golf carts, and other applications requiring stable and adjustable power.

Image: A close-up of the converter's LCD display, highlighting its input voltage (DC 6-36V), output voltage (DC 0.6-36V), output current (0-5A), and output power (80W) capabilities.

3. Package Contents

• 1 x DEWIN Programmable DC-DC Converter

4. Safety Information and Protection Mechanisms

The device incorporates several protection features to ensure safe operation:

• Input Anti-Reverse Protection: Prevents damage if input polarity is reversed.
• Output Anti-Backflow Protection: Prevents current from flowing back into the input from the output.
• Undervoltage Protection (UVP): Adjustable from 4.7-30V (default 4.7V). Shuts off output if input voltage drops below the set threshold.
• Overvoltage Protection (OVP): Adjustable from 0-37V (default 37V). Shuts off output if output voltage exceeds the set threshold.
• Overcurrent Protection (OCP): Adjustable from 0-5.2A (default 5.2A). Shuts off output if output current exceeds the set threshold.
• Overpower Protection (OPP): Adjustable from 0-82W (default 82W). Shuts off output if output power exceeds the set threshold.
• Overtemperature Protection (OTP): Activates at 100°C (default). Shuts off output if the device temperature becomes too high.
• Overtime Protection (OHP): Adjustable from 0-100 hours (disabled by default). Shuts off output after the set operating time.
• Overcapacity Protection (OAH): Adjustable from 0-9999 Ah (disabled by default). Shuts off output after the set accumulated capacity.
• Overenergy Protection (OPH): Adjustable from 0-9999 Wh (disabled by default). Shuts off output after the set accumulated energy.

Always ensure proper connections and settings to prevent damage to the device or connected equipment.

5. Product Overview

The converter features an intuitive interface with an LCD screen, buttons, and a rotary encoder for adjustments. Key components include:

• LCD Display: Shows real-time voltage, current, and power.
• V/A Button: Used to enter voltage/current setting interface and switch input/output display.
• SW Button: Used to switch parameters in setting interface and switch uplink input/output display.
• Switch Button (ON/OFF): Controls output, clears data, and selects functions in parameter settings.
• Rotary Encoder: Adjusts values and navigates menus.
• Input/Output Terminals: Screw terminals for secure wire connections.
• Cooling Fan: Automatically controlled for optimal temperature management.

Image: An internal view of the converter, highlighting the intelligent temperature-controlled fan, dual inductors, and a table detailing the functions of the V/A, SW, Switch, and Encoder buttons across different operational interfaces.

6. Setup and Connection

Before connecting, ensure the input power source is within the specified range (DC 6-36V) and the output load is appropriate for the converter's capabilities.

1. Identify Terminals: Locate the input terminals (VIN+, VIN-) and output terminals (OUT+, OUT-) on the device.
2. Connect Input Power: Connect the positive (+) terminal of your DC power source to VIN+ and the negative (-) terminal to VIN-. Ensure connections are secure.
3. Connect Load: Connect the positive (+) terminal of your load device to OUT+ and the negative (-) terminal to OUT-. Ensure connections are secure.
4. Verify Connections: Double-check all wiring for correct polarity and secure connections before applying power.

7. Operating Instructions

7.1. Setting Voltage and Current

Image: A visual guide demonstrating how to set the output voltage (CV) and current (CC) using the V/A button and rotary encoder.

1. In the running interface, short press the V/A button to enter the voltage and current setting interface.
2. The lower line of the LCD will display 'CV' flashing, indicating voltage setting mode.
3. Short press the SW button to switch the bit selector (the flashing digit). Rotate the encoder to adjust the voltage value.
4. Short press the V/A button again; the lower line of the LCD will display 'CC' flashing, indicating current setting mode.
5. Short press the SW button to switch the bit selector. Rotate the encoder to adjust the current value.
6. To exit and save settings: Short press the V/A button for 2 seconds, or wait for 6 seconds without any button operation. The settings will be automatically saved, and the device will return to the running interface.

7.2. Quickly Set Voltage or Current

In the parameter setting interface, you can quickly set the FET parameter to CV (Constant Voltage) or CC (Constant Current). Rotate the encoder to quickly set the voltage or current.

7.3. Parameter Settings

Image: A diagram illustrating how to access and navigate the parameter setting interface to configure various protection functions.

1. In the running interface, long press the SW button for 2 seconds to enter the parameter setting interface.
2. Short press SW to switch between parameters. Short press the encoder button to switch the bit selector. Rotate the encoder to adjust the parameter size.
3. For parameters like maximum capacity (OAH), maximum energy (OPH), or maximum operating time (OHP), short press the ON/OFF button to enable or disable the corresponding function. If disabled, "----" will be displayed.
4. For OAH/OPH parameters, long press the ON/OFF button to select the capacity range (e.g., 9.999AH, 99.99AH, 999.9AH, 9999AH).
5. After completing parameter settings, press and hold the SW button for 2 seconds to exit the setting interface. The set parameters will be automatically saved.

7.4. Viewing Input and Output Voltage Display

Image: A visual guide showing how to switch the display to show input voltage (IN) and output voltage (OUT) using the SW button.

In the operation interface, short press the SW button to switch between displaying the input voltage and the output voltage.

7.5. Viewing Power (W), Capacity (AH), Energy (WH), and Time (H)

Image: A diagram illustrating how to cycle through displays of power, accumulated capacity, accumulated energy, and operating time by short pressing the encoder button.

In the operation interface, short press the encoder button to switch the display to show power (W), accumulated capacity (AH), accumulated energy (WH), or operating time (H).

7.6. Lock Function

Image: A visual representation of how to lock and unlock the set voltage and current to prevent accidental changes.

In the operation interface, press and hold the encoder button for 2 seconds to lock the set voltage and current, preventing accidental adjustments. To unlock, press and hold the encoder button for another 2 seconds.

7.7. Capacity/Energy/Operation Time Statistics

Image: A detailed guide on how the converter records and manages capacity, energy, and operation time statistics, including setting maximum limits for these parameters.

Statistics for capacity, energy, and operation time begin automatically when the power is turned ON. The values from the previous state are displayed after the power is turned OFF. Recording restarts automatically when power is turned ON again. To clear the corresponding data, long press the ON/OFF button for 2 seconds in the respective interface.

7.8. Setting Maximum Capacity/Energy/Operation Time

1. Set Maximum Capacity (OAH)/Energy (OPH): When the OAH/OPH function is enabled, if the statistical capacity/energy exceeds the set maximum, the power supply will automatically turn off the output and flash "OAH"/"OPH". Once the alarm is cleared, the capacity/energy statistics will be automatically reset.
2. Set Maximum Discharge Time (OHP): When the OHP function is enabled, if the power supply operation time exceeds the set maximum discharge time, the power supply will automatically turn off the output and flash "OHP". Once the alarm is cleared, the time statistics will be automatically reset. This function allows for quantitative/timed power supply control.

Note: If OAP/OPH and OHP functions are not enabled, the power supply will only record capacity/energy and operating time. When OAH/OPH and OHP functions are enabled, the power supply will automatically shut down the output after reaching the set value. If the OHP function is enabled, the operating time of the power supply is in countdown mode.

8. Specifications

Image: Technical drawing showing the physical dimensions of the DEWIN DC converter in millimeters.

9. Maintenance

To ensure the longevity and optimal performance of your DEWIN converter, follow these general maintenance guidelines:

• Keep Clean: Regularly clean the device with a soft, dry cloth. Avoid using liquids or abrasive cleaners.
• Ensure Ventilation: Do not obstruct the cooling fan or ventilation openings. Ensure adequate airflow around the device.
• Avoid Extreme Conditions: Do not expose the converter to excessive moisture, dust, or extreme temperatures.
• Check Connections: Periodically inspect all input and output connections to ensure they are secure and free from corrosion.

10. Troubleshooting

If you encounter issues with your DEWIN converter, consider the following common troubleshooting steps:

• No Display/No Power:
  • Check input power source connection and voltage. Ensure it is within 6-36V.
  • Verify input polarity is correct.
• No Output:
  • Check if the output is turned ON (indicated by 'ON' on the display). Press the ON/OFF button if necessary.
  • Verify output connections and load.
  • Check for active protection mechanisms (e.g., OVP, OCP, OTP, OAH, OPH, OHP). The display will show corresponding error codes. Adjust settings or reduce load if a protection is triggered.
  • Ensure the set output voltage is not lower than the minimum adjustable voltage (0.6V).
• Incorrect Voltage/Current Reading:
  • Ensure the device is properly calibrated (though user calibration is not typically required for this model).
  • Check for stable input power.
• Device Overheating:
  • Ensure adequate ventilation and that the cooling fan is not obstructed.
  • Reduce the output load if operating near maximum power.

If problems persist after attempting these steps, please contact customer support.

11. Warranty and Support

For warranty information or technical support, please refer to the purchase documentation or contact your retailer. Keep your proof of purchase for any warranty claims.