Power Supply Outputs
Applies to: 
Specification of the power outputs of the I/O connectors
Non-isolated +5V and +12V power outputs are available on every I/O connectors.
Power output specification
| Parameter | Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Aggregated +5V output current | Operating temperature range | 1.0 | A | ||
| Aggregated +12V output current | Operating temperature range | 1.0 | A | ||
| Voltage drop across the electronic fuse | Max. output current | 0.2 | V |
The above specification applies over the whole operating temperature range of the Grablink card.
Power supply output
The power originates from external +5V and +12V supplies attached to the Power Input Connector.
It is mandatory to connect a hard disk power supply cable to the power input connector if an application requires one or both of these power outputs.
Each power input line is fitted with an electronic fuse and a voltage monitor.
The electronic fuse provides the following protections:
| ● | Limits the inrush current during power on sequence |
| ● | Protects the Grablink card and the power source against overload |
| ● | Protects the Grablink card and the power source against short-circuits. |
The sum of the load currents drawn from the 5V outputs of the I/O connectors must be lower or equal to 1.0 A over the whole operating temperature range of the board.
The sum of the load currents drawn from the 12V outputs of the I/O connectors must be lower or equal to 1.0 A over the whole operating temperature range of the board.
The voltage monitors continuously compare the +5V and +12V voltage against following thresholds:
| Characteristics | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| +5V voltage monitor threshold | 0.9 | 3.1 | 4.4 | V |
| +12V voltage monitor threshold | 4.2 | 7.3 | 10.4 | V |
and reports the result as logical state of POWERSTATE5V and POWERSTATE12V input lines.
| Result | State |
|---|---|
| Below threshold | LOW |
| Above threshold | HIGH |