Protection circuit and semiconductor device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorTakayuki Hiraoka
Life of this patent
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Abstract
According to one embodiment, a protection circuit comprises a first power line, a second power line, a first transistor, a first resistor, a second resistor, a second transistor, and a trigger circuit. A drain of the first transistor is connected to the first power line. A source of the first transistor is connected to the second power line. A drain of the second transistor is connected to the first power line. A source of the second transistor is connected to a first node. The trigger circuit is connected to each of the first node and the second power line. The trigger circuit is configured to control the first transistor based on a voltage change of the first node.
Claims8
A protection circuit comprising:
- a first power line;
- a second power line;
- a first transistor comprising a drain connected to the first power line and a source connected to the second power line;
- a first resistor comprising one end connected to the first power line;
- a second resistor comprising one end connected to the second power line;
- a second transistor comprising a drain connected to the first power line, a source connected to a first node, and a gate connected to each of another end of the first resistor and another end of the second resistor;
- and
- a trigger circuit connected to each of the first node and the second power line and configured to control the first transistor based on a voltage change of the first node.
A semiconductor device comprising:
- a protection circuit comprising
- a first power line,
- a second power line,
- a first transistor,
- a first resistor comprising one end connected to the first power line,
- a second resistor comprising one end connected to the second power line,
- a second transistor comprising a drain connected to the first power line, a source connected to a first node, and a gate connected to each of another end of the first resistor and another end of the second resistor, and
- a trigger circuit connected to each of the first node and the second power line and configured to control the first transistor based on a voltage change of the first node;
- a first terminal connected to the first power line and connectable with an outside entity;
- and
- a second terminal connected to the second power line and connectable with an outside entity,
- wherein the first transistor comprises a drain directly connected to the first power line without an intervening transistor, and a source directly connected to the second power line without an intervening transistor.
Dependencies are inferred from the claim text.