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2. Protection function
2.1 Overcurrent protection function
An overcurrent protection function is provided as protection when an output short circuit or overload occurs.
The operation mode is automatic reset operation.
・Automatic reset operation
In the output short circuit and overload states, intermittent operation is performed in the low power region.
Operation is automatically reset to normal operation when the short circuit or overload is removed.
2.2 Overvoltage protection function
An overvoltage protection function is provided to prevent damage by impression of an overvoltage onto the load.
The operation mode is latch operation.
When the overvoltage protection circuit operated, it is reset by turning off the input and then turning on the input
again.
Reset time changes with input electrolytic capacity, input voltage, etc.
Avoid impressing a voltage onto the output terminals from the outside by wrap around from overvoltage operation
check and the load side at receiving inspection because it may cause damage.
Overvoltage operation check is a method that checks operation by changing the resistance value of Vref.
For more information, please contact us.
2.3 Overheating protection function
An overheating protection function is provided to prevent damage, smoke generation, etc. if the module
temperature becomes abnormally high for some reason.
The operation mode is latch operation.
When the overheating protection function operated, it is reset by cutting off the input and then turning on the
input again.
Please insure the cause of the over-heat condition is removed prior to resetting the system.
Rev.3.1 May, 2013
Overload detected
過負荷検出
Automatic reset operation
自動復帰動作
Intermittent operation in low power region
低電力領域で間欠動作
出力電流
Output current
TAMURA CORPORATION
EPM Series Application Notes
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