Invention Grant
- Patent Title: Temperature switch with resistive sensor
- Patent Title (中): 温度开关带电阻式传感器
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Application No.: US13341286Application Date: 2011-12-30
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Publication No.: US08598681B2Publication Date: 2013-12-03
- Inventor: Olivier Le Neel , Ravi Shankar
- Applicant: Olivier Le Neel , Ravi Shankar
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Pte Ltd.
- Current Assignee: STMicroelectronics Pte Ltd.
- Current Assignee Address: SG Singapore
- Agency: Seed IP Law Group PLLC
- Main IPC: H01L29/00
- IPC: H01L29/00 ; H01L21/20

Abstract:
The present disclosure is directed to a device and a method for forming a precision temperature sensor switch with a Wheatstone bridge configuration of four resistors and a comparator. When the temperature sensor detects a temperature above a threshold, the switch will change states. The four resistors in the Wheatstone bridge have the same resistance, with three of the resistors having a low temperature coefficient of resistance and the fourth resistor having a high temperature coefficient of resistance. As the temperature increases, the resistance of the fourth resistor will change. The change in resistance of the fourth resistor will change a voltage across the bridge. The voltage across the bridge is coupled to the comparator and compares the voltage with the threshold temperature, such that when the threshold temperature is exceeded, the comparator switches the output off.
Public/Granted literature
- US20130168815A1 TEMPERATURE SWITCH WITH RESISTIVE SENSOR Public/Granted day:2013-07-04
Information query
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