UCD 25 watts to 1200 watts using 2 mosfets

[manojtm]

Hi Pergo

It is my design do some modification

 

[luka]

hi luka
its (-16mV) not 16mV

|16mV| is this better? it doesn't matter if it is + or -, just how big offset is, and 16mV is low... AB amp probably have more or there about

 

[manojtm]

Hi luka
Thanks

 

[manojtm]

Originally Posted by don2007ksa View Post
Hi Manojtm i used 600 khz oscillator based on your schematic my IR2110 IS DEAD,my IRF240 also dead,hope you can post your schematic with modification,thank's.

Hi don2007ksa,

pls inter change pins connect the pin 10 & 12 of the IR2110 and i never used 600KHz

 

[aman khalsa]

Hi All

tested my design its AMAZING POWER!!!!!!!!!
no noise Clear sound and good power
when i check speaker line without signal it showing -16mV this problem i want to clear ....

good jod sir....

 

[don2007ksa]

Thank's manojtm i will try another one & go back to the original OSC. hope i can make it..

 

[don2007ksa]

hi CLASS2008 i'm referring to my on oscillator triangular(600 khz) using manojtm schematic but without it's 125khz square,hope you will not be misguided.

 

[classd2008]

Yes... manojtm use only 125Khz square to triangle signal.
Where is the schema design of manojtm?

 

[andrewlebon]

HELLO
greetings is this mosfet a good choice for high power d class amps
IXFH88N30P
warm regards
andrew lebon

 

[ionutzxpo]

hi andrew,gate charge and capacitance to high, IR2110/13 will run hot ,it might work but at 100Khz for bass only high power amp
search for 2-3nF and a maximum 60-70nC capacitance and gate charge,Trr 100-200ns body diode for 250-300khz aplication

 

[manojtm]

hi classd2008
my working proj. use 132khz
hi andrewlebon
ionutzxpo says correctTrr 100-200ns body diode for 250-300khz aplication

 

[classd2008]

manojtm Where's the schematic or project that you said put??

 

[andrewlebon]

Hi
greetings thanks for the advice i am using FDA series mosfets and prototype is working
very good anyway thanks all of you
warm regards
andrew lebon

 

[manojtm]

Hi all

attaching my old design again

RGDS
manoj

 

[Pafi]

HELLO
greetings is this mosfet a good choice for high power d class amps
IXFH88N30P
warm regards
andrew lebon

Yes, it is very good for sub-amp, fsw=150 kHz, but only with disabled/replaced diode (series UltraLow Vf schottky, parallel FRED)! + pnp gate booster.

 

[classd2008]

manojtm as this temperature for high power?

 

[andrewlebon]

hello
greetings just want to ask if IR2110 candrive 2 pairs IRFP250N as i am new to class d this is a picture of 2 pairs irf250n being driven by ir2110
warm regards
andrew lebon

 

[andrewlebon]

Hi Manojtm
greetings can you give correct tl431 there are so many packages of tl431 which one are you using i also need 2 ampere 12 volts fo IR2110
trying to LM2576T but i cant get 100uh inductor so i try TL431
warm regards
andrew lebon

 

[manojtm]

Hi anrewlebon,

i mentioned on schem. R A C of TL431

 

[manojtm]

Hi All

Attaching NEW DESIGN
SOME PART DOTED GREEN LINE IS NOT TESTED
ANY ONE NEED HIGH WATT USE IRFP23N50L WITH +140 -140 YOU WILL GET 2K2

RGDS
MANOJ