Host detection circuit powered from primary side of the alternating current adaptor for detecting changes to a power level pulse of an information handling system

摘要

A method for managing an alternating current adaptor system is disclosed. A direct current voltage is received at a high impedance power delivery network from a primary side of an alternating current adaptor system. An isolated voltage is output from the high impedance power delivery network to components of a secondary side of the alternating current adaptor system. A transition in a power state identification of an information handling system associated with the alternating current adaptor system is detected. An output voltage level of the alternating current adaptor system is alternated in response to the transition in the power state identification of the information handling system.

主权项

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.