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US 2014/0232449 A1Published application
Power gating circuits using schmitt trigger circuits, semiconductor integrated circuits and systems including the power gating circuits
OwnerYoung-min SHINinventor
Life of this patent
Estimating the term…
Abstract
A power gating circuit is configured to connect a first voltage line to a second voltage line or separate the first voltage line from the second voltage line using a Schmitt trigger circuit that is configured to detect a voltage level of the second voltage line. The voltage lines are power lines or ground lines.
Claims30
A power gating circuit comprising:
- a first power line;
- a second power line;
- a first switching circuit configured to connect the first power line to the second power line or separate the first power line from the second power line in response to a first control signal indicative of a power-on or a power-off state of a logic circuit;
- a control signal generation circuit configured to generate a second control signal in response to the first control signal and an output signal from a Schmitt trigger circuit, the Schmitt trigger circuit being configured to detect a voltage level of the second power line;
- and
- a second switching circuit configured to connect the first power line to the second power line or separate the first power line from the second power line in response to the second control signal.
3 more elements
A semiconductor integrated circuit comprising:
- a first power line;
- a second power line;
- and
- a power gating circuit configured to connect the first power line to the second power line or separate the first power line from the second power line, the power gating circuit being further configured to use a Schmitt trigger circuit, the Schmitt trigger circuit being configured to detect a voltage level of the second power line.
1 more element
A semiconductor integrated circuit comprising:
- a first ground line;
- a second ground line;
- and
- a power gating circuit configured to connect the first ground line to the second ground line or separate the first ground line from the second ground line, the power gating circuit being further configured to use a Schmitt trigger circuit, the Schmitt trigger circuit being configured to detect a voltage level of the second ground line.
1 more element
A system comprising:
- a logic circuit;
- a first power line connected to an external power supply;
- a first ground line connected to an external ground voltage;
- and
- a power gating circuit configured to,
- use a Schmitt trigger circuit to detect a voltage level of a second power line or a second ground line of the logic circuit,
- connect the first power line to the second power line or separate the first power line from the second power line, and
- connect the first ground line to the second ground line or separate the first ground line from the second ground line.
5 more elements
A power gating circuit comprising:
- a first switching circuit configured to selectively connect a first voltage line and a second voltage line in response to a first control signal;
- a Schmitt trigger circuit configured to generate an output signal based on a detected voltage level of the second voltage line;
- a control signal generation circuit configured to generate a second control signal in response to the first control signal and the output signal from the Schmitt trigger circuit;
- and
- a second switching circuit configured to selectively connect the first voltage line and the second voltage line in response to the second control signal.
2 more elements
Dependencies are inferred from the claim text.