AC to DC Step-Down Power Supply Module

This 220V to 5V / 12V / 24V Precision Buck Converter Module is a compact and reliable AC-to-DC step-down power supply that efficiently converts mains AC voltage (100V–240V) into a stable DC output. Available in 5V, 12V, or 24V versions, it delivers clean and regulated power for a wide range of applications including Arduino, LED systems, industrial controls, IoT devices, and sensor modules.

Built with a high-efficiency switching regulator, this module ensures minimal heat generation and long-term reliability. It includes essential safety protections such as over-voltage, short-circuit, and over-current protection, making it suitable for both hobby and professional use.

Key Features:

• AC to DC Conversion: Converts 100–240V AC to 5V, 12V, or 24V DC (model dependent)

• Stable Regulated Output: Low ripple, high precision voltage regulation

• Compact & Efficient: Switch-mode design for high conversion efficiency

• Built-In Protection: Overvoltage, overcurrent, short-circuit, and thermal protection

• Easy Integration: Screw terminals or solder pads for quick wiring

Specifications (vary slightly by model):

• Input Voltage: 100V – 240V AC, 50/60Hz

• Output Voltage: 5V / 12V / 24V DC (choose variant)

• Output Current:

  • 5V: Up to 1.5A

  • 12V: Up to 1–2A

  • 24V: Up to 6A

• Efficiency: ≥85%

• Ripple: <50mV

• Operating Temperature: -20°C to +60°C

Applications:

• Powering Arduino, ESP8266, and other microcontrollers

• LED lighting strips and modules

• Industrial sensors and control systems

• Home automation and smart devices

• Replacing bulky transformers in compact enclosures

This AC-to-DC buck converter module provides a safe, space-saving, and efficient solution for converting mains voltage to low-voltage DC in embedded and electronic systems.