Patent ID: 8754624

Claim:
A voltage converter comprising: a switching element for controlling an output voltage of the voltage converter; a control unit configured to control the switching element based on a voltage signal; and a generation unit configured to generate the voltage signal by serially connecting a resistance element and a detection unit having a resistor corresponding to a temperature, wherein the generation unit includes a plurality of detecting units and a switching unit for selecting one of the plurality of detecting units, wherein the detection unit is arranged so as to be able to detect a temperature change of a plurality of components which is overheat-protected, the plurality of detecting units include a first detecting unit arranged close to the switching element and a second detecting unit arranged close to a rectification circuit, and the switching unit selects the first detecting unit in a case where the output voltage is a predetermined value or more, and selects the second detecting unit in a case where the output voltage is smaller than the predetermined value.