Mosfet audio driver

mik · 24th October 2003, 08:54 AM

Is anybody know good IC's for driving mosfets ,for example like TDA7250 except for mosfet transistor.

Thanks!

peranders · 24th October 2003, 09:06 AM

Linear had one LT1166 but according to reports it wasn't so good. I think it's still best to use discrete driver transistors.

Have you checked Jan's LYNX amp?

http://www.audio-circuit.dk/
LYNX amp problems...Help

mik · 24th October 2003, 09:18 AM

Thanks Peranders.
I wanted something cheap and simple for home theather use. I'll checkout lynx amp.

audioPT · 24th October 2003, 08:06 PM

Well, I know i'm not the right one to say, but...

Isn't LM4651N a mosfet driver?

soundNERD · 25th October 2003, 02:32 AM

Yes, the 4651 is a mosfet driver, designed for the 4652

audioPT · 27th October 2003, 06:53 PM

Quote:

Originally posted by soundNERD
Yes, the 4651 is a mosfet driver, designed for the 4652

Only works with 4652, or can drive individual Power Mosfets?

millwood · 27th October 2003, 07:49 PM

Quote:

Originally posted by audioPT

Only works with 4652, or can drive individual Power Mosfets?

I thought that's a PWM controller.

On to TDA7250. I am not sure if the bias is current based or voltage based. But even if it is specifically designed for BJT output devices, you can still make it work with MOSFET devices. How? Well, you can use the 7250 to drive a pair of BJTs which in turn drive the MOSFETs in CF configuration.

On the 7250, is it designed to drive just one pair of BJTs or it can handle darlingtons as well?

soundNERD · 28th October 2003, 01:14 AM

I don't know the exact details, but by reading the datasheet for the 51 and 52, it says that the 51 is a mosfet driver. I would assume that it would work for any mosfets, but as I haven't built any, I can't help you that much.

-Mike

audioPT · 28th October 2003, 07:26 AM

Well, National send me 2 samples of each 4651 and 4652.
I'm goint to drive some Power Mosfets with the 4651 and post here the results.

I hope that I still alive to tell

Pedro Martins

millwood · 28th October 2003, 10:25 AM

I just checked the datesheet. The 4651 is a pmw controller driving a mosfet H-bridge (4652).

So if you are looking for a class D subwoofer amp (its performance isn't too hot), you got the right devices.

24th October 2003, 08:54 AM	#1
mik diyAudio Member Join Date: Dec 2001 Location: Serbia	Mosfet audio driver Is anybody know good IC's for driving mosfets ,for example like TDA7250 except for mosfet transistor. Thanks!

24th October 2003, 09:06 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Linear had one LT1166 but according to reports it wasn't so good. I think it's still best to use discrete driver transistors. Have you checked Jan's LYNX amp? http://www.audio-circuit.dk/ LYNX amp problems...Help __________________ /Per-Anders (my first name) or P-A as my friends call me

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24th October 2003, 09:18 AM	#3
mik diyAudio Member Join Date: Dec 2001 Location: Serbia	Thanks Peranders. I wanted something cheap and simple for home theather use. I'll checkout lynx amp.

24th October 2003, 08:06 PM	#4
audioPT diyAudio Member Join Date: Aug 2002 Location: Right here	Well, I know i'm not the right one to say, but... Isn't LM4651N a mosfet driver?

25th October 2003, 02:32 AM	#5
soundNERD diyAudio Member Join Date: Sep 2003 Location: Illinois	Yes, the 4651 is a mosfet driver, designed for the 4652

28th October 2003, 01:14 AM	#8
soundNERD diyAudio Member Join Date: Sep 2003 Location: Illinois	I don't know the exact details, but by reading the datasheet for the 51 and 52, it says that the 51 is a mosfet driver. I would assume that it would work for any mosfets, but as I haven't built any, I can't help you that much. -Mike

28th October 2003, 07:26 AM	#9
audioPT diyAudio Member Join Date: Aug 2002 Location: Right here	Well, National send me 2 samples of each 4651 and 4652. I'm goint to drive some Power Mosfets with the 4651 and post here the results. I hope that I still alive to tell Pedro Martins

28th October 2003, 10:25 AM	#10
millwood Account Disabled Join Date: Apr 2003 Location: US	I just checked the datesheet. The 4651 is a pmw controller driving a mosfet H-bridge (4652). So if you are looking for a class D subwoofer amp (its performance isn't too hot), you got the right devices.

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