Patent ID: 9553519
Date: 2017-01-24
CPC Classifications: H02M

Claim:
1. A voltage adapter to power a mobile device, the voltage adapter comprising: a switch and a transformer coupled to the switch; an output rectifier coupled to the transformer; an output decoupler capacitor coupled to the output rectifier and configured to provide a direct current output from the voltage adapter; and an adapter output power protection controller coupled to the switch, the adapter output power protection controller to determine a draw on the voltage adapter from the mobile device and, when the draw is less than a maximum output power of the voltage adapter, to maintain a constant output voltage of the voltage adapter and, when the draw is greater than the maximum output power due to a power pulse from the mobile device exceeding the maximum output power, to provide a constant output power or a constant output current of the voltage adapter and allow the output voltage of the voltage adapter to droop during the power pulse.