Switched mode power supply method and apparatus

Details Switched mode power supply method and apparatus Switched mode power supply method and apparatus

2006-03-23

2010-12-21

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C323S224000

Reexamination Certificate

active

07855864

ABSTRACT:
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.

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patent: 2004/0090218 (2004-05-01), Isham

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