unit_proto_power_delivery_decoy_ch224k
Overview
The UNIT Power Board with Load Simulation is a versatile power module designed for prototyping on breadboards. It is based on the CH224 power management chip, supporting up to 100W of output power. This module allows users to select different output voltages via a DIP switch, depending on the power adapter's supported protocol (PD, QC, or BC). Additionally, it features a fixed 3.3V output that can be enabled or disabled through the DIP switch.
Features
- Input: USB-C (supports PD, QC, and BC protocols)
- Selectable Output Voltages: 5V, 9V, 12V, 15V, and 20V (via DIP switch)
- Fixed Output: 3.3V at 1.5A (toggleable via DIP switch)
- Screw Terminal: 5mm terminal providing VUSB output (5V-20V)
- Breadboard Compatibility: Fits both 54mm and 64mm wide breadboards
- Voltage Rail Selectors: Choose between 3.3V or VUSB for breadboard power rails
DIP Switch Voltage Selection
The output voltage depends on the connected power adapter's supported protocol. The DIP switch settings determine the VUSB output voltage:
| S1 | S2 | S3 | VUSB Output |
|---|---|---|---|
| 0 | 0 | 0 | 5V |
| 1 | 0 | 0 | 9V |
| 0 | 1 | 0 | 12V |
| 1 | 1 | 0 | 15V |
| 0 | 0 | 1 | 20V |
- 3.3V Enable Switch: A separate switch enables or disables the fixed 3.3V output.
- Voltage Rail Selection: Jumpers allow selecting 3.3V or VUSB for each breadboard rail.
Pinout
Usage
- Connect a USB-C power adapter supporting PD, QC, or BC protocols.
- Set the DIP switch to select the desired VUSB output voltage.
- Enable or disable the 3.3V output if needed.
- Use the screw terminal to access VUSB output externally.
- Set the rail voltage selectors to supply either 3.3V or VUSB to your breadboard power rails.
Applications
- Prototyping with different voltage levels
- Powering breadboard circuits with variable voltage
- Simulating load conditions in power systems
- Developing USB-C powered projects
License
This project is licensed under the GPL-3.0 License.