1. Over-Voltage Protection (OVP) Test: When the output voltage of the power supply exceeds its maximum limit voltage, the power supply will shut down its output (SHUTDOWN), called over-voltage protection. Over-voltage protection test to verify the power supply in the above-mentioned abnormal circumstances, whether the correct response.
2. Over-current protection (OCP) test: When the power output current exceeds the rated value, the power supply should limit its output current or turn off its output to avoid excessive load current damage. If the internal parts of the power supply are damaged resulting in a load current that is greater than the normal value, the power supply should also shut down its output to avoid damage.
3. Short-circuit protection test: When the power supply output short-circuit, the power supply should limit its output current or turn off its output to avoid damage, short circuit protection test is to verify the output short circuit, the power can correctly respond.