Aideepen XY-SK35 DC-DC Adjustable Automatic Buck Boost Power Supply Module

1. Product Highlights

The Aideepen XY-SK35 is an adjustable automatic voltage-up and voltage-down power supply module featuring constant voltage and current control, displayed on a liquid crystal screen. It is designed for various applications, including solar charging.

• Precision Control: NC (Numerical Control) regulates voltage and current, offering industrial quality and high precision for engineering projects.
• Clear Interface: Professional power supply liquid crystal display provides a clear interface and simple operation.
• Robust Protection: Features an almost perfect protection mechanism.
• Versatile Application: Default voltage or constant current can be set and quickly adjusted for diverse uses.
• Misoperation Prevention: Voltage and current settings can be locked to prevent accidental changes.
• High Quality: Constructed with full material for stable performance and wide applicability.

2. Specifications

For more detailed specifications, please refer to the official user manual PDF: Aideepen XY-SK35 User Manual (PDF)

3. Setup

3.1. Physical Dimensions and Mounting

The module has a compact design suitable for integration into various projects. The suggested opening size for panel mounting is provided below.

3.2. Wiring Connections

Connect your input power source to the 'IN+' and 'IN-' terminals, and your load to the 'OUT+' and 'OUT-' terminals. Ensure correct polarity to prevent damage.

Important: Do not short circuit the input (VIN) with the output (OUT), as this will cause the constant current function to fail.

4. Operating Instructions

4.1. Interface Overview

The module features a clear LCD display and intuitive controls:

• Upper Display: Shows Input/Output Voltage (V) and Constant Voltage (CV) / Constant Current (CC) status.
• Lower Display: Shows Current (A), Power (W), Capacity (Ah), Energy (Wh), or Time (h).
• Coded Potentiometer Key: Used for adjusting values and navigating settings.
• ON/OFF Button: Controls power output and switches display modes.

4.2. Basic Operation

1. Adjusting Voltage: Rotate the coded potentiometer. Clockwise rotation increases the voltage, and counter-clockwise decreases it. The module supports fast rotation for quick adjustments.
2. Adjusting Constant Current (Current Limiting Value): Press the coded potentiometer key for 1 second. The display will show 'SET' and 'CC' flickering when adjusting current, or 'SET' and 'CV' flickering when adjusting voltage.
3. Switching Lower Display Information: Short press the coded potentiometer key to cycle through displaying Current (A), Power (W), Capacity (Ah), Energy (Wh), and Time (h).
4. Turning Output ON/OFF: Short press the ON/OFF button to toggle the power output.
5. Switching Input/Output Voltage Display: Long press the ON/OFF button for 2 seconds to switch the upper display between input voltage and output voltage.

4.3. Locking Function

To prevent accidental changes to the set voltage and current, the module includes a locking function:

• Lock: Press the coded potentiometer button for 5 seconds.
• Unlock: After locking, press the coded potentiometer button for another 5 seconds to unlock.

5. Functional Details

5.1. Capacity/Energy/Running Time Statistics

The module automatically records capacity, energy, and running time:

• Statistics begin automatically when the output is ON.
• When the output is OFF, the last recorded values are displayed.
• To clear the recorded data, navigate to the corresponding interface (OAH/OPH/OHP) and press the ON/OFF button for 3 seconds.

5.2. Setting Maximum Capacity (OAH), Maximum Energy (OPH), and Maximum Running Time (OHP)

These functions allow for quantitative and timed power supply operations:

1. Setting OAH/OPH: When activated, if the statistical capacity/energy exceeds the set maximum, the power supply automatically shuts down the output and flashes "OAH" or "OPH". The statistics are cleared after the alarm is lifted.
2. Setting OHP: When activated, if the power supply runs longer than the set maximum discharge time, the power supply automatically closes the output and flashes "OHP". The time statistics are cleared automatically after the alarm is lifted.

Note: If OAH/OPH and OHP functions are not turned on, the power supply will automatically record the capacity/energy and running time. If these functions are turned on, the power supply will automatically turn off the output after reaching the set value. When OHP is active, the running time operates in countdown mode.

6. Applications

6.1. As a General Boost-Drop Power Supply

The module can be used as a versatile power supply with built-in over-voltage, over-current, over-power, over-temperature, and under-voltage protection.

1. Set Voltage: Adjust the output voltage to your desired level using the rotary potentiometer.
2. Set Constant Current (Overcurrent Protection): Adjust the constant current value. For example, if set to 3.00A, the maximum output current will be 3A. The display will show "CC" when the current limit is reached, otherwise "CV".

6.2. As a Battery Charger

This module is suitable for charging batteries due to its constant current and constant voltage capabilities. Products without constant current function should not be used for battery charging.

1. Determine Battery Requirements: Identify the floating charge voltage and charging current for your rechargeable battery. (e.g., 3.7V/2200mAh lithium battery needs 4.2V floating charge; 12V rechargeable battery needs ~14V).
2. Set Output Voltage (No Load): With no load connected, set the output voltage to the battery's floating charge voltage. (e.g., 4.2V for a 3.7V lithium battery).
3. Set Constant Current (No Load): With no load connected, set the constant current value to the desired charging current.
4. Connect and Charge: Connect the battery to the output terminals and begin charging. The module will automatically switch from constant current to constant voltage charging as the battery charges.

6.3. As an LED Constant Current Driver

The module can drive LEDs with constant current, allowing for dimming without stroboscopic effects.

1. Determine LED Requirements: Identify the working current and maximum operating voltage of your LED.
2. Set Output Voltage and Current (No Load): With no load, set the output voltage to the LED's maximum working voltage and the output current to the LED's working current.
3. Connect and Test: Connect the LED to the output terminals and test its operation.

This product can adjust the constant current value (between 0 and working current) to achieve LED polar dimming without stroboscopic effects.

7. Notes and Warnings

• Input/Output Short Circuit: Do not short circuit the module's input (VIN) with its output (OUT). Doing so will cause the constant current function to fail.
• Power Matching: Always ensure that the power capacity of your input power source is greater than the power required by your output load.
• Full Load Output: For the module to output at full load (up to 50W with air cooling), the input voltage should ideally be greater than 8V. If the input voltage is 5V, the output power will be limited to approximately 15W. The maximum current value of the module is 4A, but if the maximum output power is limited (e.g., 18V), the current should not exceed 2A.
• Input Undervoltage Protection (LVP): The module has an input undervoltage protection function, defaulting to about 4.7V. If the input voltage drops below this value, the output will automatically disconnect. When the voltage rises above 4.7V, the output will automatically restore. Note that 4.7V refers to the voltage at the product's input port; consider potential voltage drop across input wires if the input current is high.

8. Maintenance

To ensure the longevity and optimal performance of your Aideepen XY-SK35 module, follow these general maintenance guidelines:

• Keep Clean: Regularly clean the module to prevent dust accumulation, especially around the heat sink and ventilation areas. Use a soft, dry cloth.
• Avoid Moisture: Keep the module in a dry environment. Exposure to moisture can damage electronic components.
• Temperature Control: Operate the module within its specified temperature range. Avoid extreme heat or cold. Ensure adequate air circulation, especially when operating at higher power outputs.
• Inspect Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.

9. Troubleshooting

If you encounter issues with your XY-SK35 module, consider the following:

• No Output / Output Disconnects:
  - Check input voltage. If it falls below 4.7V (LVP), the output will disconnect. Ensure your power source is stable and provides sufficient voltage.
  - Verify that the input power source capacity is adequate for your load.
• Protection Code Displayed (LVP/OVP/OCP/OPP/OAH/OPH/OHP):
  - These codes indicate that a protection mechanism has been triggered. Identify the specific code displayed on the LCD.
  - LVP (Input Undervoltage Protection): Input voltage is too low. Increase input voltage or check power source.
  - OVP (Over-Voltage Protection): Output voltage exceeded set limit. Check settings and load.
  - OCP (Over-Current Protection): Output current exceeded set limit. Reduce load or increase current limit.
  - OPP (Over-Power Protection): Output power exceeded set limit. Reduce load or increase power limit.
  - OAH/OPH (Max Capacity/Energy Protection): Set capacity/energy limit reached. Clear statistics or increase limit.
  - OHP (Max Running Time Protection): Set running time limit reached. Clear statistics or increase limit.
  - After addressing the cause, the output should restore automatically once the alarm condition is cleared.
• OEP Displayed: This indicates an internal chip protection event. If this occurs persistently, the module may require professional inspection or replacement.
• Constant Current Function Failure: Ensure that the input (VIN) and output (OUT) terminals are not short-circuited.
• Inaccurate Readings: Ensure all connections are secure and that the module is operating within its specified parameters. Factory calibration ensures accuracy, but extreme conditions or faulty connections can affect readings.

10. User Tips

• Initial Setup: When first setting up, it's good practice to connect a multimeter to the output to verify the voltage and current settings before connecting your sensitive load.
• Heat Management: For applications requiring higher power output (above 35W), ensure active air cooling is provided to the module to prevent overheating and maintain optimal performance.
• Cable Selection: Use appropriately gauged wires for input and output connections, especially for higher currents, to minimize voltage drop and ensure stable operation.
• Protection Settings: Utilize the OAH, OPH, and OHP functions when charging batteries or powering time-sensitive loads to prevent overcharging or prolonged discharge.

11. Warranty and Support

The Aideepen XY-SK35 module comes with a one-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal operating conditions.

For technical support, warranty claims, or further inquiries, please contact your retailer or the manufacturer directly. Please refer to the official user manual PDF for comprehensive details regarding warranty terms and conditions.

Official User Manual (PDF): Aideepen XY-SK35 User Manual (PDF)