INRUSH CURRENT PROTECTION AND SWITCHING CIRCUIT FOR DIRECT CURRENT TO DIRECT CURRENT CONVERTER

摘要

PURPOSE: An inrush current protection and switching circuit for a direct current to direct current converter is provided to prevent an inrush current occurring on switching by incorporating an inrush current protection circuit with a switching circuit that functions to switch between subsystems. CONSTITUTION: An inrush current protection and switching circuit for a direct current to direct current converter comprises a switching unit(330), a driving unit(320), and an inrush current protection unit(310). The switching unit stabilizes an input voltage in response to an instruction to drive the direct current to direct current converter and delays the instruction to drive to be transmitted to the driving unit. Also, the switching unit transmits a switching signal in response to an instruction to stop the direct current to direct current converter and delays the instruction to stop to be transmitted to the driving unit. The driving unit receives the instruction to drive or stop from the switching unit for transmitting an instruction to control the connection of power supply. The inrush current preventing unit receives the instruction to control the connection of power supply for delaying the connection and disconnection of power supply.