Patent ID: 9484832
Filing Date: 2016-11-01
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. A method comprising: transferring energy, in accordance with a control signal provided from a controller, from a primary winding of a transformer of a switching power converter to a secondary-winding and to an auxiliary-winding for an auxiliary power supply during mutually exclusive first and second periods of time by at least controlling a value of a reflected voltage of the auxiliary-winding of the transformer to be lower than a reflected voltage of the secondary-winding of the transformer during transfer of energy to the auxiliary-winding during the first period of time and controlling an impedance of the auxiliary power supply to transfer energy to the secondary-winding without transferring energy to the auxiliary power supply during the second period of time, wherein the auxiliary power supply having the auxiliary-winding provides auxiliary power to the controller that provides the control signal to control the transferring of energy from the primary-winding, and the secondary-winding delivers energy for a load, other than the controller, of the switching power converter.