Mosfet driver IC's - Page 10

IVX · 9th April 2006, 07:28 PM

Quote:

Originally posted by TOINO
Yes. They are many examples and apparently they are no complains…
Anyway the circuit seems to be a working solution.
Here: http://www.crestaudio.com/media/pdf/lt_schematic.pdf on page 5 only passive snubber and no dead-time circuit.
The circuit looks like the US4724396.

Crown BCA patent is similar too much also.

Gyula · 9th April 2006, 10:58 PM

I have seen a similar patent to ESBT years ago and didn't understand why will it work. If the bipolar transistor goes to saturation, the bias supply will feed his c-b junction's recovery current. I think the c-b junction could be damaged if the MOSFET is switching off too fast.

?

lumanauw · 30th March 2008, 04:22 AM

Has anyone tried 8SOIC high/low driver UCC27200 for classD? Propagation delay is faster than IR driver, but with smaller max voltage.

9th April 2006, 10:58 PM	#92
Gyula diyAudio Member Join Date: Feb 2004 Location: Kunszentmárton, Hungary	I have seen a similar patent to ESBT years ago and didn't understand why will it work. If the bipolar transistor goes to saturation, the bias supply will feed his c-b junction's recovery current. I think the c-b junction could be damaged if the MOSFET is switching off too fast. ? __________________ Nagy Gyula

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30th March 2008, 04:22 AM	#93
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Has anyone tried 8SOIC high/low driver UCC27200 for classD? Propagation delay is faster than IR driver, but with smaller max voltage.

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