Banner_Discrete-IGBTs-232x23 Discrete-with-Anti-Parallel-Diode-232x232 Discrete-without-Anti-Parallel-Diode-232x232 Banner_Trenchstop_Advanced-Isolation-232x232 Promobanner_TS5_Banner323x3232


+ Reply to Thread
Results 1 to 3 of 3

Thread: Junction temperature measurement

  1. #1
    Beginner Beginner Walter Frosch is on a distinguished road
    Join Date
    Aug 2019
    Posts
    9
    Points
    56.25

    Junction temperature measurement

    Hi guys,

    I’m using an IKW40N120H3 in a boost converter.
    What is the best way to measure the junction temperature of a device?

    Thanks!

  2. #2

    Infineon Employee
    Infineon Employee
    Giuseppe De Falco is on a distinguished road
    Join Date
    Feb 2020
    Posts
    15
    Hi Walter,
    there are several ways of measure the temperature of a device in the application.

    However, please let me highlight that the 'real' junction temperature is very hard to be measured by experiments. The best way is generally by means of simulation using the equivalent thermal model provided in the datasheet (you can have a look at this application note: https://www.infineon.com/dgdl/Therma...1472fd33c70aa3)
    Alternatively, a mathematical approach based on the estimation of the power losses can be used, together with the thermal impedance provided in the datasheet of the device. Depending on the accuracy of the power losses estimation and the knowledge of the thermal system (e.g. including isolation foils, heatsink, etc.) this calculation may be quite precise or pretty rough.

    If you intend to perform an experimental measurement of the device temperature, the quickest approach is to use a thermocouple glued on the package. If you can afford to use an isolated thermocuple, the best position to place the probe is directly on the collector pin, in the proximity of the package body.

    Alternatively, you can use a thermal camera to get an estimation of the hottest device temperature, that is usually in correspondence of where the chip is located within the package.

    Regards,
    Giuseppe
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  3. #3
    Beginner Beginner Gaminguru007 is on a distinguished road
    Join Date
    Feb 2021
    Posts
    1
    Points
    60

    Netflix hidden codes

    Quote Originally Posted by Walter Frosch View Post
    Hi guys,

    I’m using an IKW40N120H3 in a boost converter.
    What is the best way to measure the junction temperature of a device?

    Thanks!
    All content and materials on this site are provided “as is“. Infineon makes no warranties or representations with regard to this content and these materials of any kind, whether express or implied, including without limitation, warranties or representations of merchantability, fitness for a particular purpose, title and non-infringement of any third party Netflix hidden codes intellectual property right. No license, whether express or implied, is granted by Infineon. Use of the information on this site may require a license from a third party, or a license from Infineon.

+ Reply to Thread
Disclaimer

All content and materials on this site are provided “as is“. Infineon makes no warranties or representations with regard to this content and these materials of any kind, whether express or implied, including without limitation, warranties or representations of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, whether express or implied, is granted by Infineon. Use of the information on this site may require a license from a third party, or a license from Infineon.


Infineon accepts no liability for the content and materials on this site being accurate, complete or up- to-date or for the contents of external links. Infineon distances itself expressly from the contents of the linked pages, over the structure of which Infineon has no control.


Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Usage Terms of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Usage Terms of this site. Infineon reserves the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.