Apparatus for stabilization of the inputted power be applied the DC/DC Convertor

摘要

PURPOSE: A DC/DC converter applied power stabilization device is provided to prevent the breakdown of the DC/DC converter due to the input of over voltage by inputting the voltage equal to the over voltage inputted to the input pin of the DC/DC converter to the control signal input pin. CONSTITUTION: A DC/DC converter applied power stabilization device includes a DC/DC converter(140) and a switch(130). The DC/DC converter(140) includes an input pin(VIN) for receiving a voltage to convert the DC voltage into the DC voltage having a predetermined level and a shut down pin for receiving the control signal to control the voltage level conversion operation so as to convert the DC voltage into the DC voltage having the predetermined level. The DC/DC converter(140) performs the voltage level conversion operation when the control signal having a level above the set threshold value to the shut down pin. And, the switch(130) applies the control signal having a level equal to that of the voltage to the shut down pin when the voltage is inputted to the input pin(VIN) and applies the control signal having a predetermined level to the shut down pin when the voltage is outputted.