SparkFun Soft Power Switch USB-C Schematic
Schematic for a soft power switch using the MAX16054 controller and USB-C interface to toggle power via a momentary pushbutton.
Overview
This schematic details the hardware design for the SparkFun Soft Power Switch USB-C. The circuit is centered around the Maxim Integrated MAX16054AZT+T, a pushbutton on/off controller with a debounced input and latched output. It controls a Diodes Incorporated DMP2123L-7 P-channel MOSFET to act as the power pass element. The design incorporates a GCT USB4105-GF-A USB-C connector for power delivery and a C&K PTS810 tactile switch for user input, providing a clean method for toggling power in electronic projects without a mechanical slide switch.
Use Cases
- Adding a soft-latching power switch to USB-C projects
- Implementing debounced pushbutton power control
- Battery-powered device power management
- Replacing mechanical toggle switches with momentary pushbuttons
Topics
Referenced Parts
DMP2123L-7
Diodes Incorporated
Q1 DMP2123L-7
USB4105-GF-A
GCT
USB-C-16PIN-VBUS-PADS (USB4105-GF-A)
MAX16054AZT+T
Maxim Integrated
U1 MAX16054AZT+T
| PTS810SJM250SMTRLFS | C&K | S1 MOMENTARY-SWITCH-SPST-SMD-7.5X4.2MM (PTS810 SJM 250 SMTR LFS) |
| DMP2123L-7 | Diodes Incorporated | Q1 DMP2123L-7 |
| USB4105-GF-A | GCT | USB-C-16PIN-VBUS-PADS (USB4105-GF-A) |
| MAX16054AZT+T | Maxim Integrated | U1 MAX16054AZT+T |