UCD 25 watts to 1200 watts using 2 mosfets

[pergo]

good job my friend!
Always self-oscillating topology?

 

[andrewlebon]

Pergo my friend THANKS just want to ask you for bridged Dclass amp dc protector need to cut off both outputs so 2 dc protector circuits to be used
warm regards
Andrew

 

[andrewlebon]

dc protection

Pergo my friend THANKS just want to ask you for bridged Dclass amp dc protector need to cut off both outputs so 2 dc protector circuits to be used
warm regards
Andrew

 

[pergo]

An externally hosted image should be here but it was not working when we last tested it.

My DC-protection schematics works only if bridged outputs have 0Vdc at idle.
In that case, you can use only one circuit for both outputs: just add another 33k input resistor for the "out-of-phase output".



In case you have a bridged amp supplied at +HV to 0V (without negative rail), at idle output has +HV/2 voltage so my circuit will not work.

 

[andrewlebon]

dETEX AUDIO FULL BRIDGE SMPS

https://www.facebook.com/photo.php?...3690158.49717.100002145681469&type=1&theater;)

 

[andrewlebon]

DPA DCLASS BRIDGED AMP 2400WATT

Hi Pergo
greetings finished dclass bridged amp will try your dc protector
warm regards
Andrew Lebon😉

 

[pergo]

it has dual rail or single ended?

 

[sandeep kayarkar]

Dpa 2400

 

[CDJKuznec]

Hi all. I made 2 boards triell 3200, but i have some problems. I don't no SMPS for this amp, for this boards.
Help me please. Give me please PCB and shematic SMPS for this boards. Thank you...

 

[CDJKuznec]

Hi all. I made 2 boards triell 3200, but i have some problems. I don't no SMPS for this amp, for this boards.
Help me please. Give me please PCB and shematic SMPS for this boards. Thank you...

 

[stewin]

here you go . lukas smps is great and many others below to choose from

http://www.diyaudio.com/forums/power-supplies/69111-offline-full-bridge-smps-need-help.html

http://www.diyaudio.com/forums/power-supplies/69111-offline-full-bridge-smps-need-help-127.html

diysmps

diysmps

diysmps

diysmps)

diysmps

 

[sandeep kayarkar]

Hi Pergo
greetings finished dclass bridged amp will try your dc protector
warm regards
Andrew Lebon😉

Hello sir.
Today i tested my dpa2400 d amp.
But have a dc at OP at 1 side. Wht is the problem............?

 

[CDJKuznec]

Stewin, thanks, I will study this SMPS.

 

[ViNzZz]

ucd schematic

Is this a good schematic? I want to build a 2 channel car amplifier with it at +-60v (4 ohm load for each channel)

Any suggestions for mosfet/dc protection?

 

[pergo]

that is my schematic.
It works very well but you've to tune the circuit with real components.
I prefer the IRS20957 version because there are less components, more protection and best performance.

 

[ViNzZz]

Ciao Fede! 😀
I didn't know that this is your schematic. I wanted to use IR2110 because I've tried it (ejtagle schematic). Do you suggest a new design with IRS20957 or you can help me with IR2110 and DC protection ? I want to use it with 8FE200 by Faital (previously I had autotek 7600bts <3).

 

[pergo]

IR2110 has fixed deadtime so you've to tune up the gate driver (charge and discharge) for good performance. You spend more time.
IRS20957 has variable deadtime (set by a resistor network) so it's easy to tune.
Also it has internal overcurrent protection for output mosfets and it needs only one logic PWM input (for example 0-3V or TTL) referred to signal ground (not to negative rail). So you don't need level shifting (Q1 and Q2 in your schematic).

For more infos, contact me via email or PM.

 

[savu]

IRS20957 drives only 1A at the output. So you won't be able to use powerful mosfets

 

[pergo]

Use external npn+pnp or integrated driver like ZXGD3001E6

 

[andrewlebon]

totem pole

DETEX HD5000 with totempole😉