ucd 25 watts to 1200 watts using 2 mosfets

[manojtm]

manojtm as this temperature for high power? NO IT IS COOL

[stewin]

Originally Posted by manojtm

Hi all

attaching my old design again

RGDS
manoj

can irf640 also supply 2a current for driving the ir2110 like the irfp240

[andrewlebon]

hi
greetings which is better gate driver ic FAN7392 OR IR2110
warm regards
andrew lebon

[andrewlebon]

Hi
greetings can anyone be kind enough to explain how ic IR2110 is driving 2pairs of irf250n i am posting a pic of a bridged mode amp sir irvynejay and
gerry morales have assembled this amp one pair each channel i am posting
pic of same amp but with 2 pairs each channel gateiver ic is ir2110 in both pcbs
warm regards
andrew lebon

[andrewlebon]

2 pairs again single ir2110 mono channel
maybe its possible
warm regards
andrew lebon

[manojtm]

Hi andrewlebon,

I think ,iam using gate driver resistor 100E(>68E) i already explain this very well, 100nC limit depends on freq. so you set your freq. 100-150KHz and add more MOSFET(x3);200-250KHz (X2) 300-450KHz (X1)

[andrewlebon]

Hi Manojtm
greetings thanks for reply so many variations in d class just reading pcb of d class 6 pairs irf4227 only 1 ic for gain 8 pin rest all discrete no other ic 4200 watts each designer has his own method
warm regards
andrew lebon

[manojtm]

Hi andrewlebon,

Simple sigma-delta method class D 93% Eff. for 400W 8R load (fsw=450KHz) +75V -75V Supply.
RGDS
Manoj

[luka]

god, when people will find out, there are other fets then irfp250's... they will **** bricks

[stewin]

Originally Posted by luka

god, when people will find out, there are other fets then irfp250's... they will **** bricks

hi luka . lucky for me there are irfb4229 ,irfp4229 irfb4227 and irfp4227 now available locally, if it was not for GOD's blessings and favour maybe i'll be numbered among the bricks ****** . will buy them and try them out.