Temperature detection circuit

Abstract

Disclosed is a temperature detection circuit connected to an SOC chip to detect the temperature of each area of the chip; the temperature detection circuit comprises a temperature sensor, a temperature-voltage detection module and a temperature-current detection module; the temperature-voltage detection module is connected between the SOC chip and the temperature sensor and at least comprises a temperature-voltage probe; and the temperature-current detection module is connected between the SOC chip and the temperature sensor and comprises at least one temperature-current probe, the temperature-voltage probes and the temperature-current probes are distributed on different to-be-detected areas of the SOC chip, each temperature-voltage probe inputs a group of input voltage signals to the temperature sensor, each temperature-current probe inputs an input current signal to the temperature sensor, and the temperature sensor outputs corresponding temperature coding information according to the input voltage signal or the input current signal. The temperature detection circuit is only provided with one temperature sensor, and the temperature of each point of the chip is accurately detected by arranging probes with different working modes in different to-be-detected areas of the SOC chip.

Description

technical field [0001] The invention relates to electronic power technology, in particular to a temperature detection circuit. Background technique [0002] In the information age, more and more attention is paid to the rapid and accurate sensing and collection of information. Sensors are at the forefront of sensing and transforming signals. As the basic device for signal collection, they directly affect the performance of the signal processing of the entire system. As the public pays attention to many fields such as public safety and health monitoring, sensors have played an important role in the fields of the Internet of Things, communications, and information security. [0003] Temperature is one of the most basic physical quantities, and it is also one of the indispensable key physical parameters for production, life and scientific research. Therefore, temperature sensing detection, that is, sensing temperature signals and converting them into electrical signals for furt...

AI Technical Summary

Problems solved by technology

That is, a temperature sensor is installed at multiple positions on the SOC, and each temperature sensor only collects the temperature of one place, so as to realize multi-point temperature measurement, but such a test method will cause the temperature sensor to be bulky and increase the area of ​​the SOC and power consumption, and the manufacturing cost is high

[0005] Therefore, when the existing temperature detection circuit uses the temperature sensor to collect the temperature of multiple points, there are problems such as high cost, high power consumption, and large occupied area.

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