UCD 25 watts to 1200 watts using 2 mosfets

[paskal9]

Hi,

What's the size of your inductor? Is it T106 or T130?

Regards,

i've mentioned it already in the previous post. it's T106-2 iron toroid.
wound with 1.5 meters of 1.2mm/AWG16/SWG18 copper wire for a total of 21-22uh of inductance.

 

[andrewlebon]

smps 4kw

Hi Jay
greetings this SMPS FILE needed
warm regards
andrew cant find torridal core this smps using as NANO mentioned

 

[Deleted member 148505]

i've mentioned it already in the previous post. it's T106-2 iron toroid.
wound with 1.5 meters of 1.2mm/AWG16/SWG18 copper wire for a total of 21-22uh of inductance.

Oh that's why it's getting hot, maybe the T157 is sufficient for 900watts. 🙂

 

[andrewlebon]

pcb for totem

NANOS PCB for 3 pair

warm regards
andrew lebon

 

[paskal9]

Oh that's why it's getting hot, maybe the T157 is sufficient for 900watts. 🙂

after adding the fan blowing some air to the pcb it doesn't heat up anymore. i've also rotated the top cover with ventilation hole directly on top of the pcb.

 

[stewin]

NANOS PCB for 3 pair

warm regards
andrew lebon

does it have overcurrent protection?
the components in the photo are not labeled, do you have a clearer one.

thanks andrew GOD bless you

 

[andrewlebon]

Hi Nano
greetings thanks for your reply and all the HELP
warm regards
andrew

 

[chago25]

NANOS PCB for 3 pair

warm regards
andrew lebon

sir andrew lebon can u share schem and overlayout?

 

[Deleted member 148505]

does it have overcurrent protection?
the components in the photo are not labeled, do you have a clearer one.

thanks andrew GOD bless you

If it uses IR2110 then it doesn't have OCP because the sd pin is connected to ground... Also didn't include shunt resistor and over current sense amplifier.

 

[stewin]

Hello
greetings IRS3000D with bd139 140 3 pairs FDA90N20
warm regards
andrew lebon

hi andrew the pcb files and schema? the one with protection, totem pole and 3pairs output.

 

[stewin]

4k5 guys

hi guys here is the best i could come up with . i hope the author can post the original schema and detailed pcb files but it works.

AMPLIFICADOR DIGITAL IRS 4K5 - YouTube

 

[andrewlebon]

Hi Stewin
greetings YES it works the pcb with bd139 bd140 is of ht forums thats why no pcb files if you are planning 3 pair fet amp CORE IS VITAL dont try gapped core wont work at high volume core saturation personally i would go for zetex trs in totem maybe this week i finish pcb protection included but totem would be smd devices
warm regards
andrew lebon

 

[stewin]

thanks michelle but i have no option but to use etd cores.

 

[don2007ksa]

Hello Michelle and Stewin will this type of ee core will work?i'll removed this from an smps,cannot identify it.

 

[Pafi]

Hello Michelle and Stewin will this type of ee core will work?i'll removed this from an smps,cannot identify it.

As what? Push-pull transformer? No. Output filter? Yes. Air-gap!

 

[stewin]

thanks pafi for answering. why can,t it work in smps?

 

[manojtm]

Hi stewin,

for class d filter use ETD29 core with 1mm air gap( supply +75v -75v)

PAFI,

are you recommended this core???

Regards
MANOJ

 

[manojtm]

Hi ALL

I am not recommending for MOSFET Paralleled configuration(x3 or above) use with recommended supply voltage with bridge configuration.

Regards
MANOJ

 

[don2007ksa]

Hi Pafi i'm going to use this for IRS3000 (output inductor) is it possible?thank's

 

[Ouroboros]

thanks pafi for answering. why can,t it work in smps?

It depends on the type of SMPS. Push-pull, half-bridge and full bridge dc-dc converters require an ungapped core, whereas a flyback type requires a gapped core.