Announcements

Register now for the most anticipated Asia Pacific Power Seminar 2022

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

Gate Driver ICs Forum Discussions

User22267
Level 1
Level 1
Hello, I am a beginner developer using Infineon products for the first time.
A circuit for charge/discharge control was constructed using the AUIR3241S gate driver IC and 80V class MOSFET.
After applying 3.3V logic to Vin, external 12V was applied to VCC, and VGS was fixed with an 18V Zener diode.
However, there is a problem that the FET side does not conduct.
Thank you for your good comments.
Is my circuit configuration wrong?
5244.attach
0 Likes
1 Solution
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator
Hi,

According to the driver internal circuit, it is non isolated. The internal circuitry of the driver IC is as below,

5248.attach

Please add an isolation for gate driver supply and the load supply. Let me know if this helped you in solving the issue.

Regards,
Abhilash P

View solution in original post

0 Likes
1 Reply
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator
Hi,

According to the driver internal circuit, it is non isolated. The internal circuitry of the driver IC is as below,

5248.attach

Please add an isolation for gate driver supply and the load supply. Let me know if this helped you in solving the issue.

Regards,
Abhilash P
0 Likes