PSRR IMPROVEMENT FOR DC-DC CONVERTERS
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United States of America
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Issued Date -
Nov 7, 2024
app pub date -
Mar 26, 2024
filing date -
Mar 26, 2024
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Abstract
Control circuits for DC-DC power converters. In one example, a control circuit includes a voltage control loop configured to produce a control voltage based on an output voltage of a DC-DC converter and a reference voltage, and a current control loop configured to produce a control current based on the control voltage. The current control loop may be further configured to adjust the control current based on a signal proportional to an input voltage of the DC-DC converter to provide an adjusted control current that is inversely proportional to the input voltage, and to produce, based on the adjusted control current and an inductor current in an inductor of the DC-DC converter, a drive signal to drive one or more power transistors of the DC-DC converter.
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