XY-SKxx DC-DC Buck-Boost converter CC/CV/CW with colour TFT display, 6-36V

Product detailed description

Third generation of the adjustable DC-DC Buck-Boost converter featuring a colour TFT (VA) display with a full viewing angle. In addition to constant voltage (CV) and constant current (CC), it supports constant power (CW) mode, making it suitable for charging batteries, load testing, and powering more demanding devices. The output voltage can be both increased and decreased across the entire 0–36 V range, regardless of the source voltage. Up to 10 memories allow you to save your favourite voltage and current combinations and switch between them with a single turn of the encoder. Compared to the basic versions, it features two additional connectors: one for an external NTC sensor, allowing the converter to monitor the temperature directly on the battery being charged, and another for an optional communication module (RS485 with Modbus protocol, or WiFi/Bluetooth for smartphone control). It also includes MPPT charging support from a solar panel and the possibility of firmware updates.

Specifications:

• Type: DC-DC Buck-Boost (step-down and step-up) converter with CC/CV/CW regulation
• Display: colour TFT (VA) display with a full viewing angle
• Displayed values:
  • input and output voltage (V)
  • current (A) and power (W)
  • transferred capacity (Ah) and energy (Wh)
  • operating time (h)
  • temperature from external sensor (if connected)
  • active mode (CC/CV/CW) and output status
• Controls:
  • rotary encoder with button
  • buttons for switching display and enabling output
  • lockout against accidental change
• Setting Memory: 10 user presets
• Adjustment Resolution:
  • Voltage: 0.01 V
  • Current: 0.001 A
• Accuracy:
  • Voltage: ±0.5 % + 1 digit
  • Current: ±0.5 % + 3 digits
• Efficiency: up to approx. 88%
• Soft start: yes
• MPPT Support: yes (charging from a solar panel)
• Firmware Update: yes
• Connection:
  • screw terminal block, input +/-
  • screw terminal block, output +/-
  • 2-pin connector for external temperature sensor (10K NTC, 3950B)
  • 4-pin connector for optional communication module – RS485 with Modbus protocol, or WiFi/Bluetooth module for app control
• Protections:
  • input reverse polarity protection
  • output reverse current protection
  • input under-voltage protection
  • output over-voltage protection
  • over-current protection
  • over-power protection
  • thermal protection – internal and via external NTC sensor
• Variants:
  • XY-SK60 (6-36V 60W):
    • Input Voltage: 6.0–36 V DC
    • Output Voltage: 0–36 V DC
    • Output Current: 0–5.0 A
    • Power: 60 W
  • XY-SK120 (6-36V 120W):
    • Input Voltage: 6.0–36 V DC
    • Output Voltage: 0–36 V DC
    • Output Current: 0–6.0 A
    • Power: 120 W

Package contents:

• 1× DC-DC Buck-Boost converter with colour TFT display (according to the selected variant)

Note:

• Neither the external NTC sensor nor the communication module (RS485 / WiFi) are included in the package; they are sold separately.
• This product is not a standalone functional unit and may require professional installation.
• The stated power applies with sufficient cooling. For continuous loads at the power limit, we recommend adding active cooling.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change its basic properties.