Patent ID: 8659263
Filing Date: 2014-02-25
Classification: H02J,H02M,Y02B,Y04S

Abstract:
1. A power supply arrangement, comprising: an off-line switched power supply configured to provide a regulated direct current (DC) power level at an output; a DC regulator circuit configured to regulate the DC power level provided to a removable load coupled to the output; a load detection circuit configured to provide a load detect signal when the removable load is detected to be present at the output; a management circuit responsive to the load detect signal circuit; and an ultra-low power switching power supply powered from an AC source, the ultra-low power switching power supply to provide power to the load detection circuit to detect the presence of the removable load, and the the ultra-low power switching power supply to provide power to the management circuit, which responsive to the detection of the removable load by the load detection circuit, enters an active state and causes the DC regulator circuit and the off-line switched power supply to each change to an active state and provide the regulated DC level to the removable load; wherein the off-line switched power supply, the DC regulator circuit, and the management circuit each remain in a substantially “off” state while the load detection circuit does not detect the removable load.