Resistance and Offset Cancellation in a Remote-Junction Temperature Sensor
US-2015003490-A1 · Jan 1, 2015 · US
Remote temperature sensing
US9772231B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9772231-B2 |
| Application number | US-201414286482-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 23, 2014 |
| Priority date | May 23, 2014 |
| Publication date | Sep 26, 2017 |
| Grant date | Sep 26, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
In one example, a method includes determining, by a device, a plurality of voltage values that each correspond to a respective voltage drop across a remote p-n junction while the remote p-n junction is biased at different respective current levels, wherein each of the plurality of voltage values is a function of at least: one of the different respective current levels, a temperature of the remote p-n junction, and a series resistance between the device and the remote p-n junction. In this example, the method also includes, determining, by the device, an intermediate value based on a difference between at least three voltage values of the plurality of voltage values, wherein the intermediate value is not a function of the series resistance, and determining the temperature of the remote p-n junction based on the intermediate value such that the temperature is not a function of the series resistance.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method comprising: determining, by a device, a plurality of voltage values that each correspond to a respective voltage drop across a remote p-n junction while the remote p-n junction is biased at different respective current levels, wherein each of the plurality of voltage values is a function of at least: one of the different respective current levels, a temperature of the remote p-n junction, and a series resistance between the device and the remote p-n junction; determining, by the device, an intermediate value based on a difference between at least three voltage values of the plurality of voltage values, wherein the intermediate value is not a function of the series resistance; and determining, by the device, the temperature of the remote p-n junction based on the intermediate value such that the temperature is not a function of the series resistance. 2. The method of claim 1 , wherein the temperature is determined approximately according to the following equation: T = ( V be 1 - V be 2 ) - ( V be 3 - V be 4 ) · K q · ln ( I D 1 · I D 4 I D 2 · I D 3 ) wherein V be1 is a first voltage value of the at least three voltage values, V be2 is a second voltage value of the at least three voltage values, V be3 is a third voltage value of the at least three voltage values, V be4 is a fourth voltage value of the at least three voltage values, is a property of the remote p-n junction, K is the Boltzmann's constant, T is the temperature of the remote p-n junction, q is the elementary charge constant, I D1 is the current level at which the remote p-n junction was biased while the first voltage value was determined, I D2 is the current level at which the remote p-n junction was biased while the second voltage value was determined, I D3 is the current level at which the remote p-n junction was biased while the third voltage value was determined, and I D4 is the current level at which the remote p-n junction was biased while the fourth voltage value was determined. 3. The method of claim 1 , wherein the temperature is determined approximately according to the following equation: T = V be 1 - V be 2 - ( V be 3 - V be 1 ) · K q · ln (
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9772231B2 cover?
- In one example, a method includes determining, by a device, a plurality of voltage values that each correspond to a respective voltage drop across a remote p-n junction while the remote p-n junction is biased at different respective current levels, wherein each of the plurality of voltage values is a function of at least: one of the different respective current levels, a temperature of the remo…
- Who is the assignee on this patent?
- Infineon Technologies Ag
- What technology area does this patent fall under?
- Primary CPC classification G01K7/01. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 26 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).