Patent ID: 9112498
Filing Date: 2015-08-18
Classification: H02M,H03K

Abstract:
1. A switching power converter comprising: a transformer including a primary winding coupled to an input voltage and a secondary winding coupled to an output of the switching power converter; a field effect transistor switch coupled to the primary winding of the transformer, current through the primary winding being generated while the field effect transistor switch is turned on and not being generated while the field effect transistor switch is turned off; and a driver control circuit configured to generate a control signal to turn on or turn off the field effect transistor switch during a plurality of switching cycles of the field effect transistor switch, each of the switching cycles including a first part during which the field effect transistor switch is turned on and a second part during which the field effect transistor switch is turned off, and the driver control circuit adjusting a magnitude of current of the control signal from a first level during a first duration of the first part of at least one of the switching cycles of the field effect transistor switch to a second level that is greater than the first level during a second duration of the first part of said one of the switching cycles, said second duration being later in time than said first duration.