3D thermal detection circuits and methods
First Claim
1. A circuit, comprising:
- sensing circuitry including at least one sensing element configured to output at least one temperature-dependent voltage;
a compare circuit configured to generate at least one intermediate voltage in response to comparing the at least one temperature-dependent voltage to a feedback voltage;
a control circuit configured to generate at least one control signal in response to the intermediate voltage; and
a switching circuit configured to couple a capacitor coupled to a feedback node to one of a first voltage supply and a second voltage supply in response to the at least one control signal to generate an output signal having a pulse width that is based on a temperature sensed by the sensing circuitry,wherein one of the at least one sensing element is disposed on a first layer of a three-dimensional integrated circuit, and wherein the compare circuit, the control circuit, and the switching circuit are disposed on a second layer of the three-dimensional integrated circuit.
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Accused Products
Abstract
A circuit includes sensing circuitry including at least one sensing element configured to output at least one temperature-dependent voltage. A compare circuit is configured to generate at least one intermediate voltage in response to comparing the at least one temperature-dependent voltage to a feedback voltage. A control circuit is configured to generate at least one control signal in response to the intermediate voltage. A switching circuit is configured to couple a capacitor coupled to a feedback node to one of a first voltage supply and a second voltage supply in response to the at least one control signal to generate an output signal having a pulse width that is based on a temperature sensed by the sensing circuitry.
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Citations
17 Claims
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1. A circuit, comprising:
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sensing circuitry including at least one sensing element configured to output at least one temperature-dependent voltage; a compare circuit configured to generate at least one intermediate voltage in response to comparing the at least one temperature-dependent voltage to a feedback voltage; a control circuit configured to generate at least one control signal in response to the intermediate voltage; and a switching circuit configured to couple a capacitor coupled to a feedback node to one of a first voltage supply and a second voltage supply in response to the at least one control signal to generate an output signal having a pulse width that is based on a temperature sensed by the sensing circuitry, wherein one of the at least one sensing element is disposed on a first layer of a three-dimensional integrated circuit, and wherein the compare circuit, the control circuit, and the switching circuit are disposed on a second layer of the three-dimensional integrated circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A circuit, comprising:
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sensing circuitry including at least one sensing element that includes first and second resistors configured to selectively output first and second temperature-dependent voltages; a compare circuit, coupled to the sensing circuitry, and configured to generate first and second intermediate voltages in response to comparing the first and second temperature-dependent voltages, respectively, to a feedback voltage; a control circuit, coupled to the compare circuit, and configured to generate first and second control signals in response to the first and second intermediate voltages; and a switching circuit, coupled to the control circuit, and configured to generate an output signal based on a temperature sensed by the sensing circuitry, wherein the at least one sensing element is disposed on a first layer of a three-dimensional integrated circuit, and wherein the compare circuit, the control circuit, and the switching circuit are disposed on a second layer of the three-dimensional integrated circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification