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AssigneeRohm Co., Ltd.
InventorsJun MAEDE, Isao YAMAMOTO, Shinya KARASAWA, Shigenobu SHIMOHAGI, Yuichi SHINOZAKI
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A power supply circuit is configured including a control circuit together with an output circuit including an external circuit component. A switching controller controls a switching transistor and a synchronous rectification transistor each configured as a switching element. A degradation detection circuit monitors a detection signal having a correlation with characteristic degradation of the circuit component, and detects the degree of characteristic degradation of the circuit component. The switching controller is capable of changing its operation according to the degree of characteristic degradation of the circuit component.
A control circuit that forms a switching power supply together with an output circuit comprising an external circuit component, the control circuit comprising:
A power supply circuit comprising:
A semiconductor integrated circuit that is used together with an external circuit component, comprising a degradation detection circuit that monitors a signal having a correlation with characteristic degradation of the external circuit component, and that detects a degree of characteristic degradation of the external circuit component,
Dependencies are inferred from the claim text.