Class D Amp with LM566, LM393 and 2XIRF530

[rafsky]

Maybe because the idea of a 2 KW half bridge is totally crazy, specially when i have the same amount of power with two half bridge configured in bridge, lower tension, lower stress for component, no bus-pumping, higher damping factor, higher sound quality cause higher switching frequency.

 

[apexaudio]

Maybe because the idea of a 2 KW half bridge is totally crazy, specially when i have the same amount of power with two half bridge configured in bridge, lower tension, lower stress for component, no bus-pumping, higher damping factor, higher sound quality cause higher switching frequency.

There is full bridge D4000

 

[rafsky]

Assuming that a common class d amplifier have 90% efficiency, obviously a 2kw class D with Fsw of 40khz have much worse efficiency, a lot of car amplifier chinese board have this Fsw and have 70-80% efficiency, then we expect 400-600 watt of dissipation, in my opinion too much for two component

 

[c08bm]

I could do it when final schematic comes out

 

[andrewlebon]

D2000

MAYBE THIS IS OF SOME HELP

 

[apexaudio]

D4000 idea

 

[ChingTan]

my d200 sounds very good i love the sound i will upload pictures after i put it in casing. and now im exited to build this sub amp

 

[c08bm]

What does +15 LS mean? It's 15V referred to negative rail?

 

[apexaudio]

What does +15 LS mean? It's 15V referred to negative rail?

Yes, it's 15V referred to negative rail?
I will share PSU and Protect for this amps.

 

[kartino]

Hi Mile, nice to meet you.

What is the advantage using IGBT (slow switch) instead of mosfet with higher speed and comparable voltage level also. For now, my IGBT class D design is just idea. Some people rejected this idea as mosfet is going better and bigger.

Regards,
Kartino

 

[c08bm]

I need someone to check this, especially Mr Mile.


Suggestions welcome too


I will post sprint file...soon

 

[andrewlebon]

Hello c08bm
greetings Thank you for taking the bull by the horns R1 R2 is 2 watt and same
should be on other igbt i am checking layout
warm regards
Andrew any email i can send you full schematic dont know why its not uploading
on forum

 

[c08bm]

So, a 4R7 5W could replace those 2 resistors, with "same should be on other igbt" you mean there should be 4r7-1nF on high side IGBT?

 

[Deleted member 148505]

Is IRS21844 more rugged and more tolerant to negative transient than IR2110? Circuit is very simple

 

[apexaudio]

PSU for D2000

 

[apexaudio]

So, a 4R7 5W could replace those 2 resistors, with "same should be on other igbt" you mean there should be 4r7-1nF on high side IGBT?

Nice work, use 4R7 2W instead 2x2R2/1W resistors.
LM311 and MC33078 must have decoupling caps 100nF from +15V and +15V to gnd (not on schematic).
Regards

 

[c08bm]

Like this?

Sprint layout file attached

 

[andrewlebon]

Hello c08bm
greetings very nice looking pcb THANK YOU
warm regards
Andrew

 

[apexaudio]

Like this?

Sprint layout file attached

Nice work, all LM311 and MC33078 need separate 2 x 100nF decoupling from +/-15V rails to gnd.
You can made pcb for D2000 PSU, this PSU can be use for D4000 also.
Regards

 

[andrewlebon]

Hello apexaudio
greetings is it possible for you to check pcb for mistakes i am also
checking for mistakes
warm regards
Andrew