How to work out an IGBT's maximum frequency is from its datasheet.

Status
Not open for further replies.
S

si2030

Member
Ok I am not an engineer just a keen hobbyst.

I have been looking at a number of IGBT datasheets and some of them indicated the top frequency on the datasheet but the majority do not.

From the details on an IGBT datasheet how can I determine the maximuim frequency the IGBT can operate at?

Kind Regards

Simon
 
I look at switching times to get a rough idea of what it could do. If it takes the igbt 2uS to turn on and 2uS to turn off, the absolute max it could do is 250khz. Then you need to consider how much switching loss you can tolerate.
 
jrz126 said:
I look at switching times to get a rough idea of what it could do. If it takes the igbt 2uS to turn on and 2uS to turn off, the absolute max it could do is 250khz. Then you need to consider how much switching loss you can tolerate.
Click to expand...

those numbers should be /50 to get to hard switched ratings. IGBT speed ratings are closely related to temperature rise due to rise and fall times and NOT to the delay times.

Dan
 
If you need fast switching a MOSFET is usually better. IGBTs are mostly used in slow speed, high voltage switching applications such as 60Hz inverters.
 
Status
Not open for further replies.

Similar threads

  • Question
What is the maximum temperature of a lithium battery when overloaded?
Replies
4
Views
608
rjenkinsgb
S
  • Question
Is this an encoder?
Replies
6
Views
826
stuhagen
S
V
  • Question
How to convert stereo audio signal into mono out for mono amplifier
Replies
16
Views
1K
audioguru
D
  • Question
How voltage is converted/measured from an analogue value to a digital value?
Replies
5
Views
1K
DaveElectronics6XT
D
7
  • Question
problems getting M74HC259B1R to work
Replies
18
Views
2K
777xxx
7
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…