Class D amplifier with common components

ratmayor · 5th October 2008, 07:42 PM

Good morning! I've seen in class D amplifiers that eh repaired some are based ICs ordinary as OpAmps and TTLS, someone will have some drawing of this type of amplifiers with these characteristics, because in my country is very difficult to obtain components such as IR2110 or other type of controller of that type. I hope you can help me, greetings ...

acid_k2 · 6th October 2008, 05:21 PM

The problem is the level shifter for driving the upper Mosfet.

If you don't have access to IC Mosfet drivers, you could try a discrete solution: my 1st ever D-amp, WORKING!!!

some other solution here:
Cheap simple class D amp circuit to build.

ratmayor · 7th October 2008, 03:41 AM

Thank you very much, is an excellent solution, unfortunately I could not open the diagrams of the following Link my 1st ever D-amp, WORKING!!! truth, I like to hear other alternatives the IC MosFETs drivers

ratmayor · 7th October 2008, 03:41 AM

PS: This is part of the class D amplifier that I want to develop, and eh could not complete for lack of IC MOSFET Drivers

luka · 7th October 2008, 07:06 AM

Be sure that 15v is 15v above 56v, not 0v
And how are you planing to open upper fet?
And I clearly see that the one that made this drawing doesn't know, he doesn't need to use 0.22 resistors, LOL

acid_k2 · 7th October 2008, 08:45 AM

IMMO, the state-of-art is here:

My DIY UCD (self oscillating UcD-style full discrete amp)

As you could see, you need a floating power supply for the upper mosfet.

5th October 2008, 07:42 PM	#1
ratmayor diyAudio Member Join Date: May 2006	Class D amplifier with common components Good morning! I've seen in class D amplifiers that eh repaired some are based ICs ordinary as OpAmps and TTLS, someone will have some drawing of this type of amplifiers with these characteristics, because in my country is very difficult to obtain components such as IR2110 or other type of controller of that type. I hope you can help me, greetings ...

7th October 2008, 07:06 AM	#5
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Be sure that 15v is 15v above 56v, not 0v And how are you planing to open upper fet? And I clearly see that the one that made this drawing doesn't know, he doesn't need to use 0.22 resistors, LOL __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

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6th October 2008, 05:21 PM	#2
acid_k2 diyAudio Member Join Date: Oct 2006	The problem is the level shifter for driving the upper Mosfet. If you don't have access to IC Mosfet drivers, you could try a discrete solution: my 1st ever D-amp, WORKING!!! some other solution here: Cheap simple class D amp circuit to build.

7th October 2008, 03:41 AM	#3
ratmayor diyAudio Member Join Date: May 2006	Thank you very much, is an excellent solution, unfortunately I could not open the diagrams of the following Link my 1st ever D-amp, WORKING!!! truth, I like to hear other alternatives the IC MosFETs drivers

7th October 2008, 08:45 AM	#6
acid_k2 diyAudio Member Join Date: Oct 2006	IMMO, the state-of-art is here: My DIY UCD (self oscillating UcD-style full discrete amp) As you could see, you need a floating power supply for the upper mosfet.

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