Iec notebook limited power source compliance with usb-c port controller

A method, comprising:

• providing, on an information handling system, a power supply configured to provide a main power bus and a secondary power bus;
• and
• providing, on the information handling system, a first USB-C port including:
• a first USB-C connector configured to provide a first internal power bus;
• a first input selector configured to selectively couple the first internal power bus to the main power bus;
• and
• a first controller configured to enable the first input selector to couple the first internal power bus to the main power bus and to disable the first input selector from coupling the first internal power bus to the main power bus, and to selectively couple the secondary power bus to the first internal power bus;
• determining, by the first controller, that an over-voltage condition is exhibited on the first internal power bus;
• and
• in response to determining the over-voltage condition:
• disabling, by the first controller, the first input selector from coupling the first internal power bus to the main power bus;
• and
• uncoupling, by the first controller, the secondary power bus from the first internal power bus in response to determining the over-voltage condition.

An information handling system, comprising:

• a power supply configured to provide a main power bus and a secondary power bus;
• and
• a first USB-C port including:
• a first USB-C connector configured to provide a first internal power bus;
• a first input selector configured to selectively couple the first internal power bus to the main power bus;
• and
• a first controller configured to enable the first input selector to couple the first internal power bus to the main power bus and to disable the first input selector from coupling the first internal power bus to the main power bus, and to selectively couple the secondary power bus to the first internal power bus;
• wherein the first controller:
• determines that an over-voltage condition is exhibited on the first internal power bus;
• in response to determining the over-voltage condition, disables the first input selector from coupling the first internal power bus to the main power bus and uncouples the secondary power bus from the first internal power bus;
• latches an indication of the over-voltage condition;
• determines that a power source device is disconnected from the first USB-C connector and that the over-voltage condition is no longer exhibited on the first internal power bus;
• and
• unlatches the indication in response to determining that the power source device is disconnected and that the over-voltage condition is no longer exhibited.