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Class D Switching Power Amplifiers and Power D/A conversion

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Old 28th December 2009, 12:36 PM   #1
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hello i found this schematic and i don't know if it's ok..
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Old 28th December 2009, 01:32 PM   #2
stoc005 is offline stoc005  United States
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Looks OK. Go to the IR website and you can get complete schematics from them. Note that output MOSfet PNs are not given. I do not know why there are 3 paralleled devices - other than it must be fairly high power. Usually one fet is enough. No feedback in the analog domain either. No offset adjust - which may be OK.
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Old 28th December 2009, 04:21 PM   #3
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Originally Posted by stoc005 View Post
Looks OK. Go to the IR website and you can get complete schematics from them. Note that output MOSfet PNs are not given. I do not know why there are 3 paralleled devices - other than it must be fairly high power. Usually one fet is enough. No feedback in the analog domain either. No offset adjust - which may be OK.
The schematics is basically the same of the topic 6000watts using 2092.The big difference is the use of tc4420 instead of pnp npn buffer stage.I think it is intended to be used as low voltage ,high current and low impedance.Again 4227 will be a good option.But imho,i would not change npn pnp buffer.Its cheaper and much less space occuppied.
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