1kW smps project (based on MicrosiM design)

[akraj]

I am glad it is working now.

Hi Wally:
There is a misunderstanding I guess! My circuit works as before, I yet to increase the primary turns. I shared my schematic if there is flaw in it.

Fets are heating up and taking too high current. When I increase load the amout of loss increases. If I take 45w output the loss is approx 43w total.

So is there any changes needed in circuit design?

Thanks
Raj

 

[P.S.RAJU]

Need current transformer detial

Hi sir i need the current transformer detial of core & winding turns of 1kv smps of microsim design so send me

 

[P.S.RAJU]

Need current transformer core &winding of smps 3.11

 

[szhighstar]

please advise core diameter and material and turns of winding and diameter of wire,I maybe can help you,thanks!

 

[P.S.RAJU]

please advise core diameter and material and turns of winding and diameter of wire,I maybe can help you,thanks!

sir i dont no the size of core &material& turn . i found the detial of schematic &pcb lay out at this site & i assembled it .i n this all the detial was their in this site except current transformer .( 1kv smps based on microsim design).so please guide thank you
p.s. raju

 

[szhighstar]

can you send photoes for reference? and tell some electrical parameters.

 

[P.S.RAJU]

can you send photoes for reference? and tell some electrical parameters.

dear sir thanks for answering.as iam not able to send photos for your reference ,but you can see all the schematic of smps of 1kv microsimdesign at forum page no,8,9,10,11.
thanks
p.s.raju

 

[michelle]

Ir2153 smps

simple smps IR2153
WARM REGARDS
michelle

 

[P.S.RAJU]

Hi sir i need red tordial core for my class d amp can you help me

 

[P.S.RAJU]

Hi sir i need red tordial core for my class d amp can you help me

 

[michelle]

so many torridal cores are red you need T157-2 MATERIAL 2 CORE for dclass

 

[MicrosiM]

simple smps IR2153
WARM REGARDS
michelle

Nice schematic michelle,

Enjoy picture of the product.

 

[michelle]

Hi Microsim
greetings nice picture to enjoy can you share some easy 2 KW PFC schematic with easy to get parts if its possible how hard is it to make a pfc for smps thanks for the picture
warm regards
michelle

 

[tebci]

hey michelle

where you find that diagram?

 

[P.S.RAJU]

dear sir microsim i need detial of current transformer of 1kv smps based on ir 2110 &sg3525
plse guide me tell me the core no. & winding detial

 

[MicrosiM]

dear sir microsim i need detial of current transformer of 1kv smps based on ir 2110 &sg3525
plse guide me tell me the core no. & winding detial

Since you didn't show witch cores you have, it will be difficult to tell you witch core to use.

But you should try any toroidal core with 0.5OD or 1cm OD

Wind 50 turns of 0.1mm magnet wire, and you have to test that by applying load slowly to the SMPS and see if your SMPS will trip at certain load or not.

I will be glad to help you out, could you please show a picture?

 

[robson132]

Hi.
I have a problem with my smps built on ETD54 3C90 ( 24 Turns at primary) 40kHz.
Current measurement at the source of Q2,resistor 1R/3W metal oxide

increased dead time, osciloskope 0,2V/Dz, load lamp 60W

minimum dead time
and gate


I used a coupled reactor 20uH 15A, core 2P80

 

[robson132]

test 520W +/-73,5V
[video=youtube;3ThhmVjdVj0]http://www.youtube.com/watch?v=3ThhmVjdVj0[/video]

 

[MicrosiM]

@robson123

As I can see in your video, the SMPS is running just good.

But before going any further into your tests, I advice you to read this paper carefully.

http://www.diysmps.com/forums/showthread.php?72-Necessary-Equipments-needed-for-SMPS-development


And let me know the tempreture of the heat sink after 3 minutes of loading the SMPS with 600W.


Regards

 

[robson132]

With a load of ~900W +/-68,5V 6,5A after 30 seconds broke Q1, so I have to remove the oscillations of the gates and I've forgotten to mount snubbers :/
radiator temperature was ~80*C @500W