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Old 10th October 2012, 01:07 AM   #2641
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Default HELLO

Hi Kirubakaran
greetings before you attempt making d class amps get a proper core T157-2 OR SIMILAR MATERIAL 2 CORE irs 900 amp i feel very sensitive if proper core is not used try the irs 3000 pcb its working good
has ocp will save your mosfets detex audio has changed pcb layout with a reason DONT try IRS2092 till you have made a few dclass amps its cost in india is about400 rs
warm regards
andrew lebon DONT TRY OTHER CORES
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Old 10th October 2012, 08:32 AM   #2642
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Quote:
Originally Posted by andrewlebon View Post
Hi Kirubakaran
greetings before you attempt making d class amps get a proper core T157-2 OR SIMILAR MATERIAL 2 CORE irs 900 amp i feel very sensitive if proper core is not used try the irs 3000 pcb its working good
has ocp will save your mosfets detex audio has changed pcb layout with a reason DONT try IRS2092 till you have made a few dclass amps its cost in india is about400 rs
warm regards
andrew lebon DONT TRY OTHER CORES
pls post irs3000 pcb layout.
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Old 10th October 2012, 10:21 AM   #2643
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Default IRS DUAL OUTPUT pdf

RNS,please check
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File Type: pdf IRS900D DUAL OUTPUT PDF.pdf (72.7 KB, 1010 views)
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Old 10th October 2012, 10:25 AM   #2644
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pcb of irs 3000 is on post 2602 component placement same as irs 1500
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Old 10th October 2012, 12:24 PM   #2645
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Hi,

Which toroid is better for class D amps? Sendust core or iron power type 2?

Thanks
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Old 10th October 2012, 03:37 PM   #2646
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Default IRS3000D

RNS CHECK PLS.
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Old 12th October 2012, 10:28 AM   #2647
stewin is offline stewin  Kenya
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[QUOTE=manojtm;3190860][QUOTE]hi i will make the amp i am interested for the one with irfp250 +/-80vlts switching at 250KHz
Quote:
Hi stewin,

with limitter or without limitter which one you ask and PCB not compleated

REGARDS
MANOJ
without limiter but with overcurrent protection if possible . you can add totem pole so i can use 3 pairs irfp260n
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Old 12th October 2012, 11:08 AM   #2648
Dxvideo is offline Dxvideo  Turkey
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One question..

Is it safe to use 200v Vds (like IRFP250) MOSFETs with +/-100v supplies in this circuit (the first 1250W into 4R one)..
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Old 13th October 2012, 01:42 AM   #2649
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Default IRS 3000 D

Hello
greetings IRS3000D with bd139 140 3 pairs FDA90N20
warm regards
andrew lebon
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File Type: jpg dsc07549f.jpg (841.8 KB, 1303 views)
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Old 15th October 2012, 05:48 AM   #2650
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I integrated the OCP in the bias regulator for IRS900

You just need to put a shunt resistor in the low side of IRS900 and cut the "SD to ground" track in IR2110 IC.

Then connect the "pad-sense" pin between the shunt resistor and lowside mosfet.
Connect the "pad-prot" to SD pin of IR2110.

The OCP is based on IRS2000.
LM311 outputs "low" if overcurrent is detected, then triggers the NE555 to output "high" to the SD pin of IR2110 for n seconds.
Attached Images
File Type: png BiasWithOCP.PNG (161.7 KB, 1082 views)
Attached Files
File Type: pdf 12vBiasWithOcp-All(Values).pdf (33.8 KB, 477 views)
File Type: pdf 12vBiasWithOcp-All(Names).pdf (33.8 KB, 413 views)
File Type: pdf BiasWithOCP.pdf (18.4 KB, 405 views)

Last edited by jlester87; 15th October 2012 at 06:00 AM.
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