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AssigneesDialog Semiconductor GmbH, Dialog Semiconductor (UK) Limited
InventorsAndrey Malinin, Tino Lin, Jiandong Zhang, John Kesterson, Qiu Sha
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A power converter has a transformer including a primary winding coupled to an input voltage, a secondary winding coupled to an output of the power converter, and an auxiliary winding is configured to detect an open connection fault of the auxiliary winding. The power converter includes a current source coupled to the auxiliary winding that, when activated, supplies a current to the auxiliary winding. A controller measures a voltage across the auxiliary winding. Responsive to detecting an increase in the voltage across the auxiliary winding while the current source is activated, the controller disables the power converter.
A power converter comprising:
A method for detecting an open connection fault of an auxiliary winding of a power converter, the power converter including a controller and a transformer with a primary winding coupled to an input voltage, a secondary winding coupled to an output of the switching power converter, and the auxiliary winding, output voltage of the power converter being reflected as feedback across the auxiliary winding, the method comprising:
Dependencies are inferred from the claim text.