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US 12,078,554 B2Granted
Temperature protection circuit
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsChan-Hong Chern, Kun-Lung Chen, Ming Hsien Tsai
Life of this patent
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Abstract
A circuit includes a temperature-sensitive voltage divider. The temperature-sensitive voltage divider includes a temperature-sensitive resistor and a second resistor having a first terminal coupled to a first terminal of the temperature-sensitive resistor. A temperature signal is generated at a first node coupled to the first terminal of the temperature-sensitive resistor. Detection logic is coupled to the first node to generate a detection signal responsive to the temperature signal.
Claims20
A circuit, comprising:
- a temperature-sensitive voltage divider, comprising:
- a temperature-sensitive resistor;
- and
- a second resistor;
- a first inverter commonly coupled to the temperature-sensitive resistor and the second resistor at a first node, wherein:
- a temperature signal is generated at the first node, and
- the first inverter comprises:
- a first transistor having a gate to which the temperature signal is applied;
- and
- a third resistor coupled to a first source/drain of the first transistor at a second node, wherein a control signal is output from the first inverter at the second node.
7 more elements
A circuit, comprising:
- a temperature-sensitive resistor;
- and
- detection logic comprising:
- a first transistor having a gate coupled to a first terminal of the temperature-sensitive resistor;
- and
- a second transistor having a first source/drain coupled to a first source/drain of the first transistor and a second source/drain coupled to a second terminal of the temperature-sensitive resistor.
3 more elements
A circuit, comprising:
- a temperature-sensitive voltage divider, comprising:
- a temperature-sensitive resistor;
- and
- a second resistor;
- a first inverter having an input terminal coupled to a first terminal of the temperature-sensitive resistor;
- and
- a shunting transistor having a gate coupled to an output terminal of the first inverter and a first source/drain coupled to a first terminal of the second resistor.
4 more elements
Dependencies are inferred from the claim text.