INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
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United States of America Patent
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Issued Date -
Jun 8, 2023
app pub date -
Oct 24, 2022
filing date -
Dec 8, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
An integrated circuit for controlling switching of a transistor in a power supply circuit. The integrated circuit includes: a first detection circuit configured to detect whether an inductor current has reached a first predetermined value; a signal output circuit configured to operate in a first mode or a second mode; a control circuit configured to control the signal output circuit to operate in the first mode when an amplitude of the first voltage after the inductor current has reached the first predetermined value is smaller than a second predetermined value, and to operate in the first mode or the second mode, corresponding to a condition of a load of the power supply circuit, when the amplitude is larger than the second predetermined value; and a driver circuit configured to turn on and off the transistor based respectively on the signal and a feedback voltage corresponding to the output voltage.
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