Information handling system with power fault protection circuit
First Claim
Patent Images
1. A method of operating an information handling system (IHS) comprising:
- decoupling an information line from the IHS if a voltage on the information line exceeds a predetermined threshold voltage; and
coupling the information line to the IHS if the voltage on the information line does not exceed the predetermined threshold voltage.
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Abstract
An information handling system (IHS) employs a power fault protection circuit to protect the IHS from overvoltages which may occur on an information line from a power adapter to the IHS. The system includes a processor coupled to the protection circuit. The circuit is operative in a first mode to decouple an information line from the IHS in response to a disable command and operative in a second mode to decouple the information line from the IHS when a voltage in the information line exceeds a predetermined threshold voltage.
31 Citations
21 Claims
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1. A method of operating an information handling system (IHS) comprising:
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decoupling an information line from the IHS if a voltage on the information line exceeds a predetermined threshold voltage; and
coupling the information line to the IHS if the voltage on the information line does not exceed the predetermined threshold voltage. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10)
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6. A method of operating an information handling system (IHS) comprising:
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asserting a disable command, and decoupling an information line of a power adapter from the IHS when the disable command is asserted.
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11. An information handling system (IHS) comprising:
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a processor; and
a protection circuit, coupled to the processor, configured to decouple an information line from the IHS when a voltage on the information line exceeds a predetermined threshold voltage. - View Dependent Claims (12, 13, 14, 15)
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16. An information handling system (IHS) comprising:
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a processor; and
a protection circuit, coupled to the processor, operative in a first mode to decouple an information line from the IHS in response to a disable command and operative in a second mode to decouple the information line from the IHS when a voltage on the information line exceeds a predetermined threshold voltage. - View Dependent Claims (17, 18, 19, 20)
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21. An information handling system (IHS) comprising:
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a chassis;
a processor mounted in the chassis; and
means coupled to the processor, operative in a first mode to decouple an information line from the IHS in response to a disable command and operative in a second mode to decouple the information line from the IHS when a voltage on the information line exceeds a predetermined threshold voltage.
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Specification