OCP (Over Current Protection) is a function that stops the output if the output current exceeds the specified value and becomes larger than expected. It is sometimes called a current limiter. This is a safety function used in switching power supplies, etc.

Unexpected increases in output current can be caused by short circuits or overloads. In addition, if the power is supplied at a higher-than-expected output, it can lead to deterioration of equipment and components, operation malfunctions, and destruction, as well as excessive power consumption beyond the expected level.

In addition, not only the equipment connected to the power supply unit, but the power supply unit itself is at risk of deterioration and destruction.

Overcurrent protection is used to prevent such cases. This role is similar to that of a breaker installed in a home or facility.

In most cases, equipment that has stopped operating due to Overcurrent protection will recover by turning the power back on again. However, if the Overcurrent protection is repeatedly activated, the cause must be carefully checked. In addition, Fuse (electrical)-based Overcurrent protection requires replacing the Fuse (electrical) with a new one.