Method and apparatus for fault condition protection of a switched mode power supply
First Claim
Patent Images
1. A circuit, comprising:
- a control circuit coupled between an energy transfer element, which is coupled to a first power supply input terminal, and a second power supply input terminal, the control circuit further coupled to receive at least feedback information of a power supply output, the control circuit to control power delivered to the power supply output from a power supply input in response to said at least feedback information of the power supply output; and
an auto-restart circuit coupled to the control circuit to repeatedly enable and disable a power supply during a fault condition, wherein a duration of at least one disable period following a detection of a fault condition of the power supply is smaller than durations of subsequent disable periods.
0 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatuses for fault condition protection of a switched mode power supply. In one aspect of the invention, a power supply circuit having an auto-restart function to turn the power supply on and off repeatedly under fault conditions is included. In one embodiment, one or more off-times following detection of a fault condition is smaller than subsequent off-times.
41 Citations
9 Claims
-
1. A circuit, comprising:
-
a control circuit coupled between an energy transfer element, which is coupled to a first power supply input terminal, and a second power supply input terminal, the control circuit further coupled to receive at least feedback information of a power supply output, the control circuit to control power delivered to the power supply output from a power supply input in response to said at least feedback information of the power supply output; and
an auto-restart circuit coupled to the control circuit to repeatedly enable and disable a power supply during a fault condition, wherein a duration of at least one disable period following a detection of a fault condition of the power supply is smaller than durations of subsequent disable periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification