This compact, open-frame Switching Mode Power Supply (SMPS) is a high-efficiency step-down module designed for embedded applications. It provides a stable output from a wide range of AC or DC inputs. Despite its small footprint, it features robust isolation between high and low voltage stages and comprehensive circuit protection.

Specifications

• Input Voltage: AC 85V – 265V (50/60Hz)
• Output Voltage: DC 5V (+/- 0.2V)
• Output Current: 700mA (800mA Peak)
• Output Power: 3.5W (Typical) / 4W (Maximum)
• Efficiency: 80%
• Ripple Wave: 60mV
• Rise Time: 100ms (Max)

Safety and Protection Features

• High/Low Voltage Isolation: Ensures safety by physically and electrically separating the mains AC input from the low-voltage DC output.
• Short-Circuit Protection: Automatically recovers once the fault is cleared.
• Over-Current & Over-Power Protection: Protects the module and connected load from drawing excessive current.
• Temperature Protection: Features a lock-and-restart recovery method to prevent thermal damage.
• Precision Stability: Utilizes a precision voltage regulator.

Features

• Ultra-Compact Size: Ideal for space-constrained projects like smart home sensors, IoT gateways, and small DIY electronics.
• Wide Input Range: Compatible with international mains voltages, making it versatile for global use.
• Low Standby Current: Draws only 0.014A at 220V AC, ensuring energy efficiency when the load is idle.
• Stable Start-up: Features a maximum 10% overshoot during power-on, protecting sensitive microcontrollers from voltage spikes.

Common Applications

• Powering Arduino, ESP8266, or ESP32 modules directly from mains.
• Small LED strip controllers and smart switches.
• Replacement power supply for small household appliances.
• Industrial control systems requiring localized 5V DC power.