Information handling system with power fault protection circuit
First Claim
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1. A method of operating an information handling system (IHS) comprising:
- providing an information line from a power adapter, wherein the information line is distinct from a voltage line from the power adapter;
decoupling the information line from an IHS if a voltage on the information line exceeds a predetermined threshold voltage;
coupling the information line to an IHS if the voltage on the information line does not exceed the predetermined threshold voltage; and
providing an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS.
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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.
28 Citations
21 Claims
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1. A method of operating an information handling system (IHS) comprising:
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providing an information line from a power adapter, wherein the information line is distinct from a voltage line from the power adapter; decoupling the information line from an IHS if a voltage on the information line exceeds a predetermined threshold voltage; coupling the information line to an IHS if the voltage on the information line does not exceed the predetermined threshold voltage; and providing an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating an information handling system (IHS) comprising:
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asserting a disable command, decoupling an information line from an IHS when the disable command is asserted, wherein the asserting the disable command is independent of a condition of the information line and the information line comprises an information line from a power adapter and is distinct from a voltage line from the power adapter; and providing an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS. - View Dependent Claims (7, 8, 9, 10)
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11. An information handling system (IHS) comprising:
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a processor; 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, wherein the information line comprises an information line from a power adapter and is distinct from a voltage line from the power adapter; and an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS. - View Dependent Claims (12, 13, 14, 15)
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16. An information handling system (IHS) comprising:
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a processor; 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, wherein the disable command is independent of a condition of the information line, 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, wherein the information line comprises an information line from a power adapter and is distinct from a voltage line from the power adapter; and an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS. - 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; means coupled to the processor, operative in a first mode to decouple an information line from the IHS in response to a disable command, wherein the disable command is independent of a condition of the information line, 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, wherein the information line comprises an information line from a power adapter and is distinct from a voltage line from the power adapter; and an electromagnetic compatibility (EMC) protection device coupled between the power adapter and the IHS.
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Specification