class D diy or? 400Vpeak-peak

[JIMMEE]

This PCB and Link
CLASS DD

[81bas]

It is a module from LabGruppen power amp... Used to create floating power voltage rails for slave class AB amp module (class TD)

Well, maybe I am wrong But heatsink copper fins are looking the same as by LabGruppen

[JIMMEE]

Originally Posted by 81bas

It is a module from LabGruppen power amp... Used to create floating power voltage rails for slave class AB amp module (class TD)

Well, maybe I am wrong But heatsink copper fins are looking the same as by LabGruppen

It is not module from LabGruppen (Class TD). It is module Class D from Thailand.But use heatsink copper fins.

[darkfenriz]

It looks clever but doesn't look like 6kW module, especially for reservoir capacitance and the inductor. Do you know what's the core material?
Also the layout design doesn't seem to be capable of performing clean fast switching despite heavy buffered gate drive.

However I probably don't understand all the details about the design:
- first, it is two mosfet-diode buck converters connected in parallel (BCA topology), yes?
- what is the network with two diodes and resonant tank? Any sort of soft-switching ZVT cell?
-the schematics are not readable enough for me to determine modulator/feedback topology, I guess it is some sort of clocked but am not sure about that, do you have readable versions?

Regards,
Adam

[Workhorse]

Its a copy of crown bca itech series amplifier, nothing else..........but in highly poor pcb layout.

[JIMMEE]

Originally Posted by Workhorse

Its a copy of crown bca itech series amplifier, nothing else..........but in highly poor pcb layout.

Why? output Coil dissimilar. But Crown use same coil + and -.


and this BCA PWM output

[Workhorse]

Originally Posted by JIMMEE

Why? output Coil dissimilar. But Crown use same coil + and -.


and this BCA PWM output

Ask the copymaster

[aandy]

core material looks like -2 from micro metals.

jimmee looks neat,most likely to be better than a crown.

the last crown i bench tested was No were near to its published ratings