Patent ID: 7548441
Filing Date: 2009-06-16
Classification: H02M

Abstract:
1. A method of converting power from an AC source at a source voltage for delivery to a load at a DC load voltage, where the source voltage may vary between a high line voltage and a low line voltage in a normal operating range, comprising: providing DC-DC voltage transformation and isolation in a first power conversion stage, the first stage having a converter array (CA) input for receiving power from the source and a CA output for delivering a galvanically isolated unregulated AC adapter module (UAAM) voltage; providing power regulation in a second power conversion stage having a power regulation (PR) input for receiving power from the CA output of the first stage, regulation circuitry, and a PR output for delivering power to the load; the regulation circuitry being adapted to maintain the load voltage within a regulation range while the PR input voltage remains within a normal operating range.