DONGKER XY-SK60 Boost Buck Converter User Manual

1. Introduction

The DONGKER XY-SK60 is a versatile DC-DC 60W 5A CVCC adjustable automatic buck-boost power supply module. It features a large LCD display and supports both buck (step-down) and boost (step-up) voltage conversion. This non-isolated converter is suitable for various applications, including LED constant current drives, battery charging, and general power supply needs.

2. Safety Information

• This is a DC power module; do not connect it to AC power.
• Ensure input power exceeds load power requirements.
• Reduce output power if the module becomes excessively hot.
• Read this manual thoroughly before use.
• When charging batteries, connect the input power before connecting the battery. Ensure the output voltage is higher than the battery voltage.
• This product does not have output reverse connection protection. Reversing the positive and negative terminals of the battery will damage the device.
• Battery charging requires specific knowledge. Non-professionals should not attempt direct charging to prevent fire and explosion hazards.

3. Product Features and Components

The XY-SK60 module offers a range of features and protection mechanisms:

• Input Voltage: DC 6V-36V
• Output Voltage: DC 0.5V-36V (Adjustable)
• Output Current: 0-5A (Adjustable)
• Output Power: 60W
• Display: Large VA color LCD for voltage, current, and power.
• Conversion Efficiency: Approximately 88%
• Soft Start: Yes
• Protection Features: Input Anti-reverse, Output Anti-backflow, Input Under-voltage (5.5V-36V adjustable), Output Over-voltage (0V-38V adjustable), Output Over-current (0A-5.2A adjustable), Output Over-power (0W-60W adjustable), Over-temperature (0-110℃ adjustable), Timeout (0-100H adjustable), Over-capacity (0-9999AH adjustable), Over-energy (0-4200KWH adjustable).
• MPPT Solar Charging Support: Yes
• Communication: Supports standard Modbus protocol for serial communication.
• Firmware Upgrade Support: Yes
• External Temperature Probe Interface: NTC temperature probe interface for over-temperature protection during charging.

Figure 1: Front view of the XY-SK60 module, highlighting the LCD display, input/output parameters, and various protection features.

4. Specifications

Figure 2: Physical dimensions of the XY-SK60 module and recommended panel cutout.

5. Setup and Wiring

Follow these steps for proper setup and wiring of the XY-SK60 module.

1. Identify Terminals: Locate the input (IN+ / IN-) and output (OUT+ / OUT-) terminals on the module.
2. Input Power Connection: Connect your DC power source (6V-36V) to the IN+ (positive) and IN- (negative) terminals. Ensure correct polarity.
3. Output Load Connection: Connect your load to the OUT+ (positive) and OUT- (negative) terminals.
4. Optional External Connections:
   • NTC Temperature Probe: For battery charging with over-temperature protection, connect an external NTC temperature probe to the designated interface.
   • XY-K485X Module: Connect an XY-K485X module for 485 bus control.
   • WiFi Module: Connect a WiFi module for remote control via APP and web-based networking.

Figure 3: Functional interfaces and wiring diagram for the XY-SK60 module.

Figure 4: Top view of the XY-SK60 module, illustrating component layout.

6. Operating Instructions

The XY-SK60 module features an intuitive LCD display and control buttons for setting parameters.

1. Power On: Connect the input power supply to the VIN+ and VIN- terminals. The LCD will illuminate.
2. Set Output Voltage (VSET): Use the VSET button and rotary encoder to adjust the desired output voltage.
3. Set Output Constant Current (ISET): Use the ISET button and rotary encoder to set the maximum output current limit.
4. Enable/Disable Output (SW): Press the SW button to turn the output ON or OFF.
5. Parameter Adjustment: The module allows adjustment of various protection parameters (e.g., under-voltage, over-voltage, over-current, over-power, over-temperature, timeout, over-capacity, over-energy). Refer to the detailed specifications for default values and adjustment ranges.
6. MPPT Solar Charging: If using for solar charging, ensure the MPPT function is enabled. Connect a solar panel to the input and a battery to the output. The module will optimize power transfer.

Figure 5: MPPT solar charging setup with external temperature probe.

7. Applications

The DONGKER XY-SK60 module is suitable for a wide range of applications, including:

• High-power LED constant current drive
• Lithium battery charging
• Ni-Cd or Ni-MH battery charging
• Solar panel power conversion
• Wind turbine power conversion
• General purpose adjustable power supply
• Instrument voltage display
• Test meter power source
• Circuit testing

8. Maintenance

• Keep the module clean and free from dust and moisture.
• Ensure adequate ventilation, especially during high-power operation, to prevent overheating.
• Regularly check connections for tightness and corrosion.
• Avoid exposing the module to extreme temperatures or mechanical shock.

9. Troubleshooting

• No Display/No Output:
  • Check input voltage: Ensure it is within the 6V-36V range.
  • Check input polarity: Verify IN+ and IN- connections are correct.
  • Check output enable: Ensure the output is turned ON via the SW button.
• Output Voltage/Current Not Stable:
  • Ensure input power is sufficient for the load.
  • Check for loose connections.
  • Verify that protection features (e.g., over-current, over-power) are not being triggered.
• Module Overheating:
  • Reduce output power or current.
  • Ensure proper ventilation and airflow around the module.
  • Check ambient temperature.
• Battery Charging Issues:
  • Confirm output voltage is set higher than the battery voltage.
  • Check external temperature probe connection if used.
  • Ensure MPPT is enabled for solar charging.

10. Support

For further assistance or inquiries, please contact DONGKER customer support.