: The heart of the circuit is a single-chip offline switcher (such as a TOP series or similar integrated PWM/MOSFET IC). This IC handles the high-frequency switching into the primary side of the isolation transformer.
: Built-in overvoltage, overcurrent, overheating, and short-circuit protection. Schematic and Circuit Architecture
: Providing power for LED drivers or small relay boards. Troubleshooting and Safety Tips 85~265V AC to 5V 3.5W DC Isolated Power Supply Module