Patent ID: 11863055
Assignee: PSEMI CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A power converter including:
(a) a converter circuit;
(b) an auxiliary circuit coupled to the converter circuit and configured to provide various voltages and/or signals to the converter circuit, the auxiliary circuit including:
(a) a first terminal configured to be selectably coupled to a first voltage;
(b) a second terminal configured to be selectably coupled to a second voltage;
(c) a first subcircuit having an input coupled to the first terminal and a first output; and
(d) a second subcircuit having an input coupled to the second terminal and a second output;
(e) an input voltage selector having a first input coupled to the first output of the first subcircuit, a second input coupled to the second output of the second subcircuit, and a third output, wherein the input voltage selector is configured to (1) select the first subcircuit or the second subcircuit coupled to the greater of the first voltage or the second voltage and provide power from the selected first or second subcircuit to the auxiliary circuit from the third output during a startup phase of the auxiliary circuit, and (2) select the first subcircuit or the second subcircuit coupled to the lesser of the first voltage or the second voltage and to provide power from the selected first or second subcircuit to the auxiliary circuit from the third output during a steady-state operational phase of the auxiliary circuit while the lesser selected voltage meets or exceeds a specified minimum voltage for the steady-state operational phase.