TEMPERATURE DETECTOR AND THE METHOD USING THE SAME
First Claim
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1. A temperature detector, comprising:
- a first multiplexer having a plurality of input terminals connected to voltage dividers;
an electronic component with a temperature-dependent threshold voltage;
a first comparator having input terminals connected to outputs of the electronic component and the first multiplexer;
a second comparator having input terminals connected to outputs of the electronic component and the first multiplexer;
a second multiplexer connected to the outputs of the first and second comparators; and
a controller connected to the output of the second multiplexer and configured to generate selecting and enabling signals of the first and second comparators;
wherein the first and second comparators are responsible for detecting different temperature ranges.
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Abstract
A temperature detector includes a plurality of comparators, an electronic component and a controller. Each of the comparators is responsible for detecting different temperature ranges. The electronic component has a temperature-dependent threshold voltage and an output connected to inputs of the plurality of comparators. The controller is configured to enable only one of the comparators at one time and to generate a value to the other inputs of the plurality of comparators.
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Citations
15 Claims
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1. A temperature detector, comprising:
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a first multiplexer having a plurality of input terminals connected to voltage dividers; an electronic component with a temperature-dependent threshold voltage; a first comparator having input terminals connected to outputs of the electronic component and the first multiplexer; a second comparator having input terminals connected to outputs of the electronic component and the first multiplexer; a second multiplexer connected to the outputs of the first and second comparators; and a controller connected to the output of the second multiplexer and configured to generate selecting and enabling signals of the first and second comparators; wherein the first and second comparators are responsible for detecting different temperature ranges. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A temperature detector, comprising:
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a plurality of comparators each responsible for detecting different temperature ranges; an electronic component having a temperature-dependent threshold voltage and an output connected to inputs of the plurality of comparators; and a controller configured to enable only one of the comparators at one time and to generate a value to the other inputs of the plurality of comparators. - View Dependent Claims (8, 9, 10, 11)
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12. A method of using a temperature detector, comprising the steps of:
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enabling a first comparator and disabling a second comparator, wherein one input terminal of the first comparator and one input terminal of the second comparator are connected to an electronic component with a temperature-dependent threshold voltage, and the first and second comparators are responsible for detecting different temperature ranges; inputting a test data to the other input terminals of the first and second comparators; selectively utilizing the outputs of the first and second comparators to update the test data and then feed back to the first and second comparators; and enabling the second comparator and disabling the first comparator if the test data is greater than a switching value. - View Dependent Claims (13, 14, 15)
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Specification