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US 2022/0029544 A1Published application
Switch mode power converter
AssigneeSignify Holding B.V.
InventorBERNHARD CHRISTIAAN VAN DIJK
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Abstract
A switch mode power converter comprises an inverter, a transformer having a primary side winding and a secondary side winding and a first inductor in series with the primary side winding. A second inductor is provided magnetically coupled to the first inductor, and a voltage at one end of the second inductor is used as a feedback signal for indirectly measuring (i.e. approximating) the secondary side voltage, but with measurement at the primary side.
Claims13
A switch mode power converter, comprising:
- an inverter comprising a high side switch and a low side switch connected in series with a first node between them;
- a transformer having a primary side winding and a secondary side winding;
- and
- a first inductor in series with the primary side winding and connected to the primary side winding at a second node;
- a second inductor magnetically coupled to the first inductor, the second inductor defining an output terminal at one end;
- and
- a controller for controlling the inverter, wherein the controller has an input for receiving a signal derived from the voltage at the output terminal,
- wherein the second inductor has an inductance approximately equal to or greater than a combined primary side series leakage inductance of the transformer.
5 more elements
Dependencies are inferred from the claim text.