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Class D Switching Power Amplifiers and Power D/A conversion

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Old 13th February 2005, 11:00 PM   #1
jkeny is offline jkeny  Ireland
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Default New Switching amplifier chips

Has anybody seen the specs on these new chips http://www.analog.com/en/prod/0,2877,AD1990,00.html

Looks interesting?

Anybody any experience with other "class D" chips Maxim Max9704 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4230

and

MPS7720 - 20W chip. - www.monolithicpower.com
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Old 16th February 2005, 12:00 AM   #2
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I haven't checked those out, but I did come across a MOSFET gate driver from International Rectifier. They also have a reference design for a 500W + 500W class D:

http://www.irf.com/technical-info/re...audiokits.html

I'm thinking about constructing it.
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Old 19th February 2005, 04:44 AM   #3
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The IR reference amp isn't really the best. There are better designs elsewhere on this site. IT's gate drivers are great tho!

I have used the MAXIM MAX4295 rather extensively but it is nowhere near the power level of the MAX9704. They make excellent products so if you are interested I highly suggest it!
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