Patent ID: 8543859

Claim:
An alternating current adaptor system comprising: a high impedance power delivery network configured to provide an isolated power signal, wherein the isolated power signal is isolated from a primary side of the alternating current adaptor system; a host detection circuit in communication with the high impedance power delivery network, the host detection circuit configured to detect when an information handling system is connected to the alternating current adaptor system and when a change in a power state of the information handling system occurs; an edge pulse generator in communication with the host detection circuit, the edge pulse generator configured to receive a signal from the host detection circuit to indicate that the information handling system is connected to the alternating current adaptor system or that the change in the power state of the information handling system has occurred, and further configured to output a low level pulse in response to the signal from the host detection circuit; a pulse coupling circuit in communication with the edge pulse generator, the pulse coupling circuit configured to receive the low level pulse from the edge pulse generator, and to output an isolated low level pulse, wherein the isolated low level pulse is isolated from the edge pulse generator; and a state toggling circuit in communication with the pulse coupling circuit, the state toggling circuit configured to toggle an enable line of a pulse width modulation circuit between high and low in response to receiving the isolated low level pulse from the pulse coupling circuit.