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Old 2nd December 2017, 09:04 AM   #1301
Baldin is offline Baldin  Denmark
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Looks like IR20957 and postfilter FB. Is it Post filter only?
I'm working on a design with IR2092 with a combination of post and pre-filter FB, where the OTA amp in the input is used as comparator, so compared to IR20957, omitting one component.
Seems you are using a buck converter for the gate drive supply. Which one? Haven't been monitoring the development in this area, but maybe I should, the problem has been that the input voltage has been limited to around 60V, where 100V would be ideal for the IR gate ICs to batch their max supply voltage.
What is MDR input for?
Nice PCB ... 5 x 10 cm? .... this is what I'm trying to limit myself to
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Last edited by Baldin; 2nd December 2017 at 09:09 AM.
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Old 3rd December 2017, 09:54 AM   #1302
kartino is offline kartino  Indonesia
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My UcD Fulbridge for PA
Supply +/- 90Vdc. Tested live to drive 2x18" vc 5" and the speakers are on peak already
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Old 3rd December 2017, 03:48 PM   #1303
stewin is offline stewin  Kenya
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Quote:
Originally Posted by kartino View Post
My UcD Fulbridge for PA
Supply +/- 90Vdc. Tested live to drive 2x18" vc 5" and the speakers are on peak already
hi katrino very impressive , nice work ,.

how do you deal with the noise?? have you ever tried to bridge the amp , was it stable??

please post schematics and the forum of your build.

Last edited by stewin; 3rd December 2017 at 03:52 PM.
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Old 3rd December 2017, 04:14 PM   #1304
stewin is offline stewin  Kenya
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also what output fets do you use at +/-90vdc?
and the minimal inductance you have used successfully is what load??
schematic please??
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Old 8th December 2017, 08:58 AM   #1305
kartino is offline kartino  Indonesia
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It is very stable, more than 100 hours for many events.
Load 4 ohm (2x18") per channel. No Noise, very quiet. It is fullbride, not BTL.
Schematic has been posted in my thread
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Old 8th December 2017, 09:04 AM   #1306
kartino is offline kartino  Indonesia
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On test video is here:

YouTube
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Old 11th December 2017, 12:04 PM   #1307
doctormord is offline doctormord  Germany
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Small TPA3128 (TPA3116/3118 successor) stereo setup in 2x6liters bass-reflex with touch, podcast, Airplay, DLNA.

Amp:
TPA3128D2 – 2 x 30/50W Stereo 60/100W Mono Class-D Verstarker – #360customs

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Old 29th December 2017, 01:11 PM   #1308
irs20957 is offline irs20957  Russian Federation
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doctormord Nice! )))
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Old 18th February 2018, 12:13 PM   #1309
Baldin is offline Baldin  Denmark
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Talking Small Class-D Plateamp

Finished my small plate amp for my mini sub
( Reckhorn Mini-Sub )

Amp based on IRS2092 but with a mix of post and pre-filter feedback.
Running 200 W i 4 ohm, using a Connec Electronic 240R SMPS with +-40Vdc.
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Old 19th February 2018, 04:31 PM   #1310
dudaindc is offline dudaindc  United States
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Nice one, Baldin!
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