Patent ID: 8938635
Filing Date: 2015-01-20
Classification: G06F

Abstract:
1. 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 a change in a power state of the information handling system, and to output a signal to indicate the change in the power state of the information handling system; a pulse coupling circuit coupled to the host detection circuit, the pulse coupling circuit configured to output an isolated pulse in response to the signal from the host detection circuit; 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.