Breadboard Overvoltage Protection Module
Breadboard Overvoltage Protection Module
This is a breadboard friendly power overvoltage protection module.
The protection voltage limit is jumper selectable for 3.3V or 5V.
If the input voltage exceeds the limit then the output is disconnected from power.
Use it to protect sensitive components from damage due to overvoltage.
This is not a voltage regulator; this goes after the voltage regulator or buck/boost power module. It protects your components in the event of a power supply regulation failure or connection to the wrong power supply.
Design Documents
| Schematic Diagram | schematic_J704_breadboard_ovp.pdf |
| Bill of Materials | bom_J704_breadboard_ovp.pdf |
| PCB Gerbers | gerbers_J704_breadboard_ovp.zip |
Specifications
| Cutoff voltage, 5V setting | 5.5V |
| Cutoff voltage, 3.3V setting | 3.6V |
| Reverse voltage protection | Transient, clamp diode protected (see Note 1 below) |
| Extreme overvoltage protection | Transient, clamp diode protected (see Note 1 below) |
| Dimensions | 28Hx17Wx8D mm |
Note 1. Warning - Continuous reverse voltage, over voltage, or low voltage (short circuit) conditions can overheat and damage the module.
Absolute Maximum Ratings
| Input voltage | 12V |
| Maximum current | 2.5A |
Recommended Operating Conditions
| 5V setting | 2.5A maximum current |
| 3.3V setting | 2.0A maximum current |
Operation
- Install the header jumper at either the "3.3" or "5V" pins.
- Attach power to the "In" pins. Attach the load to the "Out" pins.
- The "OVP" led will illuminate when an overvoltage condition is present, and the load will be disconnected from power.