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 5 of 5

Thread: Questions about the parameters in the IGBT datasheet

  1. #1
    New Member New Member pllan815 is on a distinguished road
    Join Date
    Mar 2021
    Posts
    3
    Points
    40

    Questions about the parameters in the IGBT datasheet

    In IGBT datasheet, what are the definitions of Qrr, tr, and tf? For Qrr, what kind of definition does it correspond to?Click image for larger version

Name:	QRR定义.png
Views:	1
Size:	2.92 MB
ID:	5839. Thanks in advance.

  2. #2

    Infineon Employee
    Infineon Employee
    Expert
    IGBT Wizzard is on a distinguished road
    Join Date
    Dec 2019
    Posts
    20
    Hallo pllan815,

    please have a look into our Infineon Application note 2011_05:

    https://www.infineon.com/dgdl/Infine...34eb12584604e2

    Definitions for the dynamic parameters tr and tf you find in chapter "3.10 Dynamic behavior".
    In chapter "4.4. Reverse recovery" you will find the definition for Qrr.
    Be aware, that different upper integration limits might be used by our competition.
    Your attached pictures show alternative ways, e.g. integration up 10% IRM.
    Infineon uses a integration limit up to 2% IRM to cover the whole recovery process.
    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
    New Member New Member pllan815 is on a distinguished road
    Join Date
    Mar 2021
    Posts
    3
    Points
    40
    Thank you for your answer!

  4. #4
    New Member New Member pllan815 is on a distinguished road
    Join Date
    Mar 2021
    Posts
    3
    Points
    40
    Thank you for your answer! Now, I know the definition of Qrr, tr and tf. But, I don't find the information for trr. Can I assume that the value of trr is equal to (t2 - t‘) in the graph. Click image for larger version

Name:	trr.png
Views:	0
Size:	40.8 KB
ID:	5842

  5. #5

    Infineon Employee
    Infineon Employee
    Expert
    IGBT Wizzard is on a distinguished road
    Join Date
    Dec 2019
    Posts
    20
    Yes, you are right.
    trr represents the duration of the occurrence of reverse recovery current. it is measured from the point of time, where the current crosses the zero line up to 2% IRM.
    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.

+ Reply to Thread

Tags for this 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.