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US 2006/0220623 A1Published application
Switched mode power supply method and apparatus
AssigneeSemtech Corporation
InventorsJoseph Andruzzi, Daragh MacGabhann, Brian Carpenter
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AssigneeSemtech Corporation
InventorsJoseph Andruzzi, Daragh MacGabhann, Brian Carpenter
Estimating the term…
In one or more embodiments, a switched mode power supply circuit is configured to monitor and control its output voltage during discontinuous conduction mode (DCM) operation, to prevent output over-voltage conditions. For example, in one embodiment, a switched mode power supply circuit is configured to operate selectively in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), and it includes a control circuit that is configured to detect an output over-voltage condition during DCM operation. The control circuit reduces the output voltage of the switched mode power supply circuit responsive to detecting the output over-voltage condition, such as by activating a pull-down device and/or temporarily reverting the switched mode power supply circuit to continuous conduction mode (CCM) operation.
A switched mode power supply circuit comprising:
A switched mode power supply circuit configured to operate selectively in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), said switched mode power supply circuit comprising a control circuit configured to:
A method of controlling a switched mode power supply circuit that selectively operates in a continuous conduction mode (CCM) and a discontinuous conduction mode (DCM), the method comprising:
A method of controlling a switched mode power supply circuit comprising:
Dependencies are inferred from the claim text.