| 摘要 |
PROBLEM TO BE SOLVED: To reduce power loss generated by a resistor for detecting current while securing the accuracy and stability of overcurrent protection. SOLUTION: When an input current Io is converted to voltage for detection by the resistor Rs for detecting current that is connected in series with an input current path, and the level of the current detection voltage Vs is discriminated for detection so that overcurrent protection can be made, the discrimination threshold is reduced according to the increase in an input power supply voltage Vi. |
