| 摘要 |
A switching power supply circuit includes a pair of input nodes to which an input voltage is applied, a pair of output nodes from which an output voltage is outputted and to which a load is connected, a cascode element and a coil connected between the input node and the output node, and a control circuit outputting a drive signal that controls a conduction state of the cascode element. The control circuit controls the conduction state of the cascode element in response to a potential of a point connecting a normally-on type transistor and a normally-off type transistor that constitute the cascode element.
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