Gate drive transformers?

Loial · 17th October 2005, 09:04 AM

I've got a few small transformers from work, they are originally used in a PSU, 16-30V -> 7V@7.5A.
The windings are 6:5. operating frequency for the PSU is 225 kHz.
I wonder if these may be suitable as gate drive transformers even without rewinding, wich was my first thougt.
The transformer is 20*20*8-10 mm.

mzzj · 17th October 2005, 10:58 PM

Quote:

Originally posted by Loial
I've got a few small transformers from work, they are originally used in a PSU, 16-30V -> 7V@7.5A.
The windings are 6:5. operating frequency for the PSU is 225 kHz.
I wonder if these may be suitable as gate drive transformers even without rewinding, wich was my first thougt.
The transformer is 20*20*8-10 mm.

Just an guess: primary inductance is not big enough and you end up with huge magnetisation current.

Loial · 18th October 2005, 05:03 AM

I guessed the low nomber of windings would be a problem, yes...
There are however some transformers, a bit smaller though, but they have a 3,3V secondary - going to investigate these a bit more later today...

Pierre · 18th October 2005, 09:17 AM

If you are looking for gate drive transformers, let me recommend you Coilcraft SD250-4 or Pulse T0584 (or the variations that suit your application if you need full-bridge driving).
You can find some experimental results is some threads in this forum.

Hope this helps.

17th October 2005, 09:04 AM	#1
Loial diyAudio Member Join Date: Nov 2004 Location: Gävle	Gate drive transformers? I've got a few small transformers from work, they are originally used in a PSU, 16-30V -> 7V@7.5A. The windings are 6:5. operating frequency for the PSU is 225 kHz. I wonder if these may be suitable as gate drive transformers even without rewinding, wich was my first thougt. The transformer is 20208-10 mm.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Gate Drive Transformer	microsim444	Everything Else	1	2nd December 2008 12:52 PM
Isolated gate drive IC is finally HERE!!	rtarbell	Parts	0	16th September 2008 06:31 AM
Correct gate drive waveform ?	alexclaire	Power Supplies	11	20th August 2008 02:17 PM
ucd gate drive, discrete or integrated?	zilog	Class D	14	4th February 2006 06:23 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th October 2005, 05:03 AM	#3
Loial diyAudio Member Join Date: Nov 2004 Location: Gävle	I guessed the low nomber of windings would be a problem, yes... There are however some transformers, a bit smaller though, but they have a 3,3V secondary - going to investigate these a bit more later today...

18th October 2005, 09:17 AM	#4
Pierre Banned Join Date: Nov 2004 Location: Paris	If you are looking for gate drive transformers, let me recommend you Coilcraft SD250-4 or Pulse T0584 (or the variations that suit your application if you need full-bridge driving). You can find some experimental results is some threads in this forum. Hope this helps.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)