Technical Terms

Over Voltage Protection (OVP) is a function that shuts down the output and protects the power supply and load when the input or output enters an over voltage condition due to some abnormality.

For example, input-side overvoltages include surge voltages such as lightning and static electricity. On the other hand, overvoltage on the output side can be caused by equipment malfunctions, such as a short circuit within the equipment.

Unexpected overvoltages can destroy or degrade resistors, capacitors, and ICs in the circuit. In some cases, overvoltage may cause abnormal heat generation or short-circuiting, which may lead to ignition. This is why overvoltage suppression is necessary.

For Overvoltage protection (OVP), use an Overvoltage protection (OVP) circuit. There are various methods of Overvoltage protection (OVP) circuits. The use of a transformer to separate the input and output circuits and detect overvoltage using an IC or other means, and the use of diodes are also typical Overvoltage protection (OVP) circuits.

Overvoltage protection (OVP) circuits are also used in many power supply ICs and power supply devices. Many of Matsusada Precision's power supply devices are equipped with Overvoltage protection (OVP).