DCDC CIRCUIT, CIRCUIT START-UP METHOD, AND ELECTRONIC DEVICE
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Dec 16, 2024
filing date -
Dec 16, 2024
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Abstract
The present application relates to a DCDC circuit, a circuit start-up method, and an electronic device. The DCDC circuit includes a transformer circuit, a synchronous rectification circuit, and a control circuit; wherein the control circuit is configured to control a turn-on duration of a first switch and a turn-on duration of a second switch in a first bridge circuit of the transformer circuit to increase progressively every switching cycle until an output voltage of the transformer circuit is greater than a first target voltage; and control a turn-on duration of a third switch and a turn-on duration of a fourth switch in a second bridge circuit of the synchronous rectification circuit to increase progressively every switching cycle until an output voltage of the synchronous rectification circuit is greater than a second target voltage.
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