Patent ID: 8879286
Filing Date: 2014-11-04
Classification: H02M,Y02B,Y10T

Abstract:
1. A power supply, comprising: a first input node configured to receive a first input AC signal having a first phase and having peak portions and non-peak portions; a second input node configured to receive a second input AC signal having a second phase and having peak and non-peak portions, the second phase being different from the first phase; a third input node configured to receive a third input AC signal having a third phase and having peak and non-peak portions, the third phase being different from the first and second phases; a converter stage including a transformer, coupled to the first, second, and third input nodes, and configured to generate a first DC power signal from the first, second, and third input AC signals, to galvanically isolate the first DC power signal from the first, second, and third input nodes, and to perform power-factor correction by causing a first current to be drawn from the first input node during the peak and the non-peak portions of the first input AC signal, a second current to be drawn from the second input node during the peak and the non-peak portions of the second AC signal, and a third current to be drawn from the third input node during the peak and non-peak portions of the third AC signal; and a first output node coupled to the converter stage and configured to carry the first DC power signal.