What protection features do power adapters need to have?

What protection features do power adapters need to have?

When producing power adapters, safety protection is required. The following power adapter manufacturers will describe in detail the power adapter when the loop is damaged.
Several protection functions of overvoltage protection, such as optocoupler damage or TL431 voltage divider network is affected, the power adapter must stop working immediately and remain in this state until the user restarts the adapter.
Short circuit protection
Must be able to withstand continuous output short circuits without damage. When the fault disappears, the adapter must be able to recover from protected mode and provide rated power again.
Over temperature protection
If the temperature of the power adapter exceeds a certain temperature value, the adapter is at risk of damage. To avoid this, it is necessary to continuously monitor the temperature with a thermal sensor. When the temperature exceeds the limit set by the designer, the adapter will continue to shut down; when the user restarts the power supply and the temperature drops, the power adapter resets.
Over power protection
For some power supplies, it is important that under worst-case conditions – such as loads that draw too much current, the maximum output current remains under control without actually shorting out


Post time: Jun-17-2022