MultiCam Boards Documentation > GRABLINK series Documentation > GRABLINK Full XR Handbook > Camera Link Electrical Specification > Power over Camera Link > PoCL OCP - Overcurrent Protection

PoCL OCP - Overcurrent Protection

Each PoCL controller embeds an "Over Current Protection circuit": the OCP.

The OCP is based upon an electronic device that controls the current delivered to the load using:

The dV/dt limiter controls the output voltage rising slope. This limits the current during the charging of the load capacitor. The short circuit current limiter is effective when a short circuit event occur. It is also effective during the charging of the load capacitor since during that phase, the load is equivalent to a short circuit.

The overload current limiter is effective when during normal operation, the load current increases excessively; when the overload level is reached, the overload current limiter will automatically reduce the current to the short circuit level.

The thermal protection limits the temperature of the electronic device by opening the circuit until the device temperature reduces sufficiently.

PoCL OCP characteristics

Parameter

Min

Typ

Max

Units

Output voltage slew rate

 

0.15

 

V/ms

Short circuit current limit

0.6

1

1.8

A

Overload current limit

3.1

3.2

3.5

A