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Old 18th December 2012, 01:18 PM   #3061
manojtm is offline manojtm  India
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Quote:
what is the value off gate resistor ?
Hi Hadi,

39 Ohm OR 47 Ohm

if need a more power for your AMP use high voltage like 55V OR 65V OR 75V. use LPS

are you need a CAR SMPS???

Regards
MANOJ

Last edited by manojtm; 18th December 2012 at 01:21 PM.
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Old 18th December 2012, 03:18 PM   #3062
stewin is offline stewin  Kenya
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Hi all pls help . The irs900d i made , i tested with +/-45vlts everything was o.k except ir2110 heating which was solved by a small heatsink . When i added the voltage to +/-75vlts the amp works for a few minitues then distorts badly all channels behave the same. the components are exactly the ones posted in irs900d . When i reduced the voltage to +/- 39vlts all channels are working o.k .

The amp has 3channels , my inductor is etd42 20turns . Outputs are irfp250n with 100ohms gate resistor . the aux voltage i used irf640 for each channel to produce the +12vlts the main capacitor is 100vlts x 1000uf x 4pieces.
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Old 18th December 2012, 03:23 PM   #3063
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Default THanks to sir manoj

Quote:
Originally Posted by manojtm View Post
Hi Hadi,

39 Ohm OR 47 Ohm

if need a more power for your AMP use high voltage like 55V OR 65V OR 75V. use LPS

are you need a CAR SMPS???

Regards
MANOJ
Hi
yes
i want use AUD600 in my car
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Old 18th December 2012, 04:03 PM   #3064
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Default hi stewin,

Quote:
Originally Posted by stewin View Post
Hi all pls help . The irs900d i made , i tested with +/-45vlts everything was o.k except ir2110 heating which was solved by a small heatsink . When i added the voltage to +/-75vlts the amp works for a few minitues then distorts badly all channels behave the same. the components are exactly the ones posted in irs900d . When i reduced the voltage to +/- 39vlts all channels are working o.k .

The amp has 3channels , my inductor is etd42 20turns . Outputs are irfp250n with 100ohms gate resistor . the aux voltage i used irf640 for each channel to produce the +12vlts the main capacitor is 100vlts x 1000uf x 4pieces.
irs900d is using 2inverter buffer (cd4049) pls change the schemantic pcb layout to 3 inverter buffer stage.
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Old 18th December 2012, 08:05 PM   #3065
stewin is offline stewin  Kenya
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Quote:
Originally Posted by kirubakaran View Post
irs900d is using 2inverter buffer (cd4049) pls change the schemantic pcb layout to 3 inverter buffer stage.
Please do you have the schematic or the correct pcb layout of irs900d which can work with hi voltage like +/-80vlts comfortably with irfp250n

Last edited by stewin; 18th December 2012 at 08:26 PM.
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Old 19th December 2012, 06:44 AM   #3066
stewin is offline stewin  Kenya
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hi manoj .
have you tried your amp aud600 with hi voltage like +/-85 vlts outputs using irfp250n, and has it worked well without any issues?
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Old 19th December 2012, 07:19 AM   #3067
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Default hi stewin,

hi stewin,
greetings,
i dnt have schematic i was try irs900 but its failed in high voltage, the i try irs1500 its work perfect with +- 75 voltage. small difference between irs900 and irs1500.
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Old 19th December 2012, 08:10 AM   #3068
manojtm is offline manojtm  India
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Quote:
hi manoj .
have you tried your amp aud600 with hi voltage like +/-85 vlts outputs using irfp250n, and has it worked well without any issues?
Hi stewin,

yes it can handle 90V max. spk 8R load. tested 87V supply working good. fsw=@250KHz 8R spk load

Regards
MANOJ
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Old 19th December 2012, 09:05 AM   #3069
manojtm is offline manojtm  India
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Quote:
When i added the voltage to +/-75vlts the amp works for a few minitues then distorts badly all channels behave the same. the components are exactly the ones posted in irs900d .
Hi Stewin,

may be your filter, its saturated due to high voltage. T157-2 for high voltage application.

T106-2 for max.65V supply.

Regards
MANOJ
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Old 19th December 2012, 06:01 PM   #3070
stewin is offline stewin  Kenya
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Quote:
Originally Posted by manojtm View Post
Hi Stewin,

may be your filter, its saturated due to high voltage. T157-2 for high voltage application.

T106-2 for max.65V supply.

Regards
MANOJ
I used etd42 20turns 1mm single copper wire
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