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US 2023/0273249 A1Published application
Resonant frequency change detection
AssigneeTexas Instruments Incorporated
InventorFlorian Thomas Müller
Life of this patent
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Abstract
At a switch terminal of a flyback converter in a discontinuous conduction mode in a power meter, an apparatus determines a resonant frequency of the flyback converter. The apparatus determines whether the resonant frequency satisfies a condition. Through a controller, the apparatus triggers an event responsive to determining that the resonant frequency satisfies the condition.
Claims20
A system, comprising:
- a flyback converter having a resonant frequency and a discontinuous conduction mode, the flyback converter including a controller configured to:
- control the flyback converter;
- determine whether the resonant frequency satisfies a condition;
- and
- responsive to determining that the resonant frequency satisfies the condition, trigger an event.
2 more elements
A computing apparatus, comprising:
- a computer-readable storage medium;
- and
- program instructions stored on the computing-readable storage medium that, when executed by a computing apparatus, direct the computing apparatus to at least:
- determine a resonant frequency of a flyback converter in a power meter, at a switch terminal of the flyback converter in a discontinous conduction mode;
- determine whether the resonant frequency satisfies a condition;
- and
- trigger, via a controller, an event responsive to determining that the resonant frequency satisfies the condition.
4 more elements
A method of detecting magnetic tampering in a power meter, the method comprising:
- determining a resonant frequency of a flyback converter in the power meter, at a switch terminal of the flyback converter in a discontinous conduction mode;
- determining whether the resonant frequency satisfies a condition;
- and
- triggering, via a controller, an event responsive to determining that the resonant frequency satisfies the condition.
1 more element
Dependencies are inferred from the claim text.