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Class D Switching Power Amplifiers and Power D/A conversion

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Old 28th May 2013, 12:33 PM   #61
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Quote:
Originally Posted by Tekko View Post
Looks about right.

powerflux, those fets are not really any better than a IRFP450, almost 4nF gate capacitance is HUGE!
depends on what you're using it for. can't see the IRFP450 surviving in my application..

but my suggestion was bases on a misunderstanding. please ignore
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Old 30th May 2013, 05:58 AM   #62
manojtm is offline manojtm  India
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Hi Tekko,

For +/-70V use FDP075N15A_F102 MOSFET it will give more Power and low THD

Regards
MANOJ
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Old 30th May 2013, 08:30 AM   #63
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Except the rails in my BIG class d are 83-85 volts, would stress those FDB75N15's too much.
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Old 31st May 2013, 05:50 AM   #64
manojtm is offline manojtm  India
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Hi Tekko

it depends, dead-time what you given if it is Zero MOSFET will not survive otherwise OK

Regards
MANOJ
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Old 31st May 2013, 08:13 AM   #65
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Some MOSFETs from NXP-Philips. See picture.
What would you recomment?
Attached Images
File Type: jpg NXP N-MOSFETs.jpg (217.7 KB, 103 views)

Last edited by steph_tsf; 31st May 2013 at 08:15 AM.
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