Push Button Power Switch

An open-source, high-side MOSFET power switch controlled by a single momentary pushbutton. Toggle power on and off without a microcontroller or dedicated power-management IC.

Explore the KiCad design files, simulation, and documentation on GitHub: Push Button Power Switch on GitHub

Push Button Power Switch schematic showing the load switch MOSFET, switch debounce, rising edge detection, and power-on and power-off control circuits.
High-side MOSFET power-latch schematic showing the debounce, latching, feedback, and shutdown circuits.
Push Button Power Switch prototype on a breadboard with transistors, resistors, capacitors, jumper wires, and an external pushbutton board.
Breadboard prototype of the push-button power switch, with an additional MOSFET for reverse-polarity protection not shown in the reference schematic.