SK120S DC Buck-Boost Power Supply Module 40V 7A 120W MPPT Solar Charger Constant Voltage Current 1.8 inch LCD Display

The SK120S DC Buck-Boost Power Supply Module is an advanced adjustable power converter designed for efficient voltage regulation, battery charging, and solar energy applications. It combines both step-up and step-down voltage regulation capabilities, allowing it to automatically increase or decrease the input voltage to maintain the desired output.

The module supports an input voltage range from 6.0V to 36.0V and provides an adjustable output voltage from 0V to 40V with a maximum output current of 7A and total output power up to 120W. With a conversion efficiency of about 88%, the module delivers reliable performance for various power management tasks.

A 1.8-inch high-brightness full-color LCD screen displays real-time information such as voltage, current, power, and system status. The display supports customizable interface colors and 360-degree rotation, allowing users to view data conveniently from different angles.

The SK120S also integrates MPPT (Maximum Power Point Tracking) technology for efficient solar charging, improving energy conversion efficiency when used with solar panels. The soft-start function helps protect connected devices by gradually increasing output voltage at startup.

The module includes comprehensive protection mechanisms such as under-voltage, over-voltage, over-current, over-power, over-temperature, timeout, over-capacity, and over-energy protection. It also features reverse polarity protection and output reverse current protection to enhance system safety.

User operation is simple and convenient with five silicone buttons and an integrated buzzer for feedback. The module also supports storage of up to 10 parameter groups, allowing users to save and quickly recall frequently used configurations.

Specifications

Product Name: DC Buck-Boost Power Supply Module
Model: SK120S

Input Voltage: 6.000 – 36.00V
Output Voltage: 0 – 40.00V (adjustable)
Output Current: 0 – 7.000A
Maximum Output Power: 120W

Display:
1.8-inch full-view high-brightness true color LCD

Voltage Accuracy: ±0.5% + 1 digit
Current Accuracy: ±0.5% + 3 digits

Voltage Resolution: 0.01V
Current Resolution: 0.001A

Output Ripple: Typical value Vpp ≤ 150mV

Conversion Efficiency: About 88%

MPPT Function: Supported
Soft Start: Supported
Buzzer: Yes
Buttons: 5

Data Storage: 10 parameter groups

Protection Features:
Anti-reverse protection
Reverse current protection
Under-voltage protection
Over-voltage protection
Over-current protection
Over-power protection
Over-temperature protection
Over-time protection
Over-capacity protection
Over-energy protection

Product Size: 86 × 50 × 45 mm
Package Size: 104 × 70 × 52 mm
Product Weight: 108 g
Package Weight: 128 g

Applications

Solar charging systems
MPPT solar controllers
Battery charging systems
Adjustable laboratory power supplies
DIY electronics and power projects
Embedded power systems
Portable power devices
Voltage regulation for electronic equipment