MULTI-MODE FLYBACK CONTROL FOR A SWITCHING POWER CONVERTER
First Claim
1. A method comprising:
- detecting whether a dimmer is phase cutting an input voltage to a switching power converter;
operating the switching power converter in a first mode if the dimmer is detected;
operating the switching power converter in a second mode if phase cutting of the input voltage is not detected;
the dimmer is not detected; and
transitioning between operating the switching power converter in the first mode and the second mode if a status of a detection of the dimmer changes.
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Accused Products
Abstract
In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whether a load requests more power than either of the two operational modes can provide. In at least one embodiment, the controller detects whether a dimmer is phase cutting an input voltage to a switching power converter. The controller operates the switching power converter in a first mode if the dimmer is detected, and the controller operates the switching power converter in a second mode if the dimmer is not detected. The controller also transitions between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes.
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Citations
26 Claims
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1. A method comprising:
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detecting whether a dimmer is phase cutting an input voltage to a switching power converter; operating the switching power converter in a first mode if the dimmer is detected; operating the switching power converter in a second mode if phase cutting of the input voltage is not detected;
the dimmer is not detected; andtransitioning between operating the switching power converter in the first mode and the second mode if a status of a detection of the dimmer changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
a controller to control a switching power converter, wherein the controller is configured to; detect whether a dimmer is phase cutting an input voltage to a switching power converter; operate the switching power converter in a first mode if the dimmer is detected; operate the switching power converter in a second mode if phase cutting of the input voltage is not detected; and transition between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus comprising:
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a switching power converter; a controller coupled to the switching power converter, wherein the controller is configured to; detect whether a dimmer is phase cutting an input voltage to a switching power converter; operate the switching power converter in a first mode if the dimmer is detected; operate the switching power converter in a second mode if phase cutting of the input voltage is not detected; and transition between operating the switching power converter in the first mode
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26. An apparatus comprising:
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a switching power converter; and a controller coupled to the switching power converter, wherein the controller includes a dimmer detector and the dimmer detector generates a dimmer detection output that controls operational characteristics of the switching power converter in one of at least two different operational
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Specification