Invention Grant
- Patent Title: Temperature sensing device and method of generating a signal representing the temperature of an environment
- Patent Title (中): 温度感测装置和产生表示环境温度的信号的方法
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Application No.: US13601464Application Date: 2012-08-31
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Publication No.: US09097592B2Publication Date: 2015-08-04
- Inventor: Osvaldo Enrico Zambetti , Dario Zambotti
- Applicant: Osvaldo Enrico Zambetti , Dario Zambotti
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law group PLLC
- Priority: ITMI2011A1591 20110905
- Main IPC: G01K7/24
- IPC: G01K7/24 ; G01K7/00 ; G01K7/25 ; G01K7/16 ; G01K7/22
Abstract:
A sensing device includes a first current mirror configured to mirror a current flowing through a thermistor, a second current mirror configured to mirror a current flowing through a reference resistor a comparator configured to compare voltages on the thermistor and the resistor, and a counter configured to generate a control signal representative of a temperature difference based on the comparison. The control signal controls a mirroring ratio of the second current mirror. The sensing device may be employed to generate a droop current of a voltage regulator.
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