Patent ID: 8897038
Filing Date: 2014-11-25
Classification: G01R,H02M

Abstract:
1. A switching power converter for providing regulated power to a load, the 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, the transformer electrically isolating a primary side of the switching power converter corresponding to the primary winding and a secondary side of the switching power converter corresponding to the secondary winding; a switch coupled to the primary winding of the transformer, current through the primary winding being generated while the switch is turned on and not being generated while the switch is turned off; a dynamic load detector circuit coupled to the load on the secondary side of the switching power converter, the dynamic load detector circuit configured to monitor an output voltage to the load and generate a dynamic load detection signal indicative of a dynamic load change responsive to a rate of change of the output voltage exceeding a threshold rate of change, the dynamic load detection signal comprising a voltage pulse across the secondary winding of the transformer; and a switch controller on the primary side of the switching power converter, configured to generate a control signal to turn on or turn off the switch, the switch being turned on responsive to the control signal being in a first state and the switch being turned off responsive to the control signal being in a second state, the switch controller further configured to detect the dynamic load detection signal via primary-side sensing, and the switch controller further configured to generate a switching cycle of the switch responsive to the dynamic load detection signal being detected.