infineon4engineers Facebook

infineon@google+ Google+

infineon@linkedin linkedin

infineon4engi@twitter twitter

infineon@youtube youtube

+ Reply to Thread
Results 1 to 2 of 2

Thread: 12V/15V power supply rating for gate driver 1EDI60N12AF

  1. #1
    Beginner Beginner XaviPacheco is on a distinguished road
    Join Date
    Jun 2018
    Posts
    2
    Points
    55

    12V/15V power supply rating for gate driver 1EDI60N12AF

    Hi,

    I'm looking for a suitable power supply for the gate driver 1EDI60N12AF. As it is a isolated driver, it uses two isolated voltages, 5V and 12V or 15V. My question is basically about the ratings of the 15V power supply. The gate driver datasheet specifies a minimun peak current of 6A. But that doesn't mean that my supply has to be rated at 6A or 10A. In fact, my PWM frequency is 10 kHz, so I expect an average current drawn from 15V supply of I = Q x Fs, where Q is the total gate charge of my power MOSFET and Fs my PWM frequency. According to my power mosfet datasheet (IRF250P224), the total charge is 160 nC (for a VDS of 200V), so I = 160nC * 10 kHz = 1.6 mA.
    In summrary, do you think that a 15V power supply rated a 66mA/1W is suitable? The minimum 6A peak current is provided by the decoupling capacitor, right? I'm just starting to do designs in Electronics, so I'm trying to strengthen some concepts.
    My project involves mains, so I will use an AC/DC converter to get the 5V (IRM-15-5), and isolated DC/DC converter to step up the 5V to 15V (R1SE-0515/H2-R).

  2. #2

    Infineon Employee
    Infineon Employee
    Expert
    tengD is on a distinguished road
    Join Date
    May 2017
    Posts
    17
    Hello XaviPacheco,

    Yes, 15V/1W power supply is ok for the driver IC. and as the 6A peak current is provided by the capacitor, just make sure capacitor is big enough.


    Regards,
    Daisy
    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.