Project Overview
The 5V 1A Switch Mode Power Supply (SMPS) is a compact and efficient AC-to-DC power converter designed to deliver a stable 5V DC output at up to 1A from a universal AC input. The design employs flyback topology to provide electrical isolation, high efficiency, and reliable performance. It incorporates over-current, over-voltage, and short-circuit protection, making it suitable for powering USB-powered devices, embedded systems, IoT modules, and other low-power electronic applications.
Key Features
Universal AC input: 85–265V AC
Stable 5V DC / 1A regulated output
Flyback isolated power supply design
High efficiency with low standby power consumption
Built-in short-circuit protection
Over-current protection (OCP)
Over-voltage protection (OVP)
Compact and lightweight PCB design
Low output ripple and noise
Reliable operation for continuous use
Technical Specifications
Parameter | Specification |
Input Voltage | 85–265V AC, 50/60Hz |
Output Voltage | 5V DC ±5% |
Output Current | 1A (Max) |
Output Power | 5W |
Topology | Isolated Flyback SMPS |
Efficiency | Up to 80–85% |
Protection | OCP, OVP, SCP |
Operating Temperature | -20°C to +60°C |
Cooling | Natural Air Cooling |
PCB Type | FR-4 Double Layer |
Applications
USB Chargers
Mobile Phone Charging
IoT Devices
Embedded Systems
Development Boards (Arduino, ESP32, Raspberry Pi Pico)
Bluetooth and Wi-Fi Modules
CCTV Accessories
LED Controllers
Consumer Electronics
Industrial Control Circuits
Package Includes
1 × 5V 1A SMPS Power Supply PCB
1 × Fully Assembled Electronic Circuit