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Class D Switching Power Amplifiers and Power D/A conversion

ucd 25 watts to 1200 watts using 2 mosfets
ucd 25 watts to 1200 watts using 2 mosfets
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Old 23rd May 2012, 06:04 PM   #1951
CPX is offline CPX  Romania
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Quote:
Originally Posted by luka View Post
But you can, differential mode with 2ch.
Yes..but for only one signal at a time....
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Old 23rd May 2012, 06:13 PM   #1952
luka is offline luka  Slovenia
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ucd 25 watts to 1200 watts using 2 mosfets
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Originally Posted by CPX View Post
Yes..but for only one signal at a time....
you can't do much, if you have floating signal... other option is look every signal compared to ground... if is not bad really, since you know what levels should at test points
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Old 23rd May 2012, 06:19 PM   #1953
CPX is offline CPX  Romania
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Originally Posted by manojtm View Post
Hi CPX,

i am not tested OCP with short.test with 2ohm load (spk)with high volume OCP circuit run perfectly no burns
change OCP sensing delay to 0.5uS
Since i am not using your protection i can not change anything..my reaction time since event to total shutdown is around 3us.
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Old 26th May 2012, 07:31 AM   #1954
manojtm is offline manojtm  India
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Hi All

I am ready to sell my UCD AMP
1. carrier based Class D Amp
2. self oscillated based Class D Amp

anybody interested pls replay
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Old 27th May 2012, 09:15 PM   #1955
norazmi is offline norazmi  Malaysia
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lol , i think you`re the first person gonna sell ucd amp but its yours
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Old 31st May 2012, 11:13 AM   #1956
Aucosticraft is offline Aucosticraft  India
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Does any one here knows the equation for calculating operating frequency if this UCD amp.
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Old 1st June 2012, 06:18 AM   #1957
manojtm is offline manojtm  India
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Hi CPX

I will give you the Equation for overcurrent Protection

550mV/.04R = 13.8A

you want to increase the current

550mV/.04R * 1K5+1K/1K = 34A

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MANOJ
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Old 1st June 2012, 06:34 AM   #1958
manojtm is offline manojtm  India
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Hi CPX

for 13.8A OCP, MOSFET should be 28A rated for 1us and 56A for 1sec.

RGDS
MANOJ
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Old 1st June 2012, 06:48 AM   #1959
manojtm is offline manojtm  India
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Hi All

again i have one doubt, Everybody says that for IR2110 MOSFET drive 100nC for 2A

The equation says 1C=1A/sec. then how 100nC=2A???

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MANOJ
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Old 1st June 2012, 11:38 AM   #1960
luka is offline luka  Slovenia
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ucd 25 watts to 1200 watts using 2 mosfets
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Originally Posted by manojtm View Post
then how 100nC=2A???
And why did time parameter go away?
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