1kW smps project (based on MicrosiM design)

MicrosiM

MicrosiM

Administrator
Staff member
badboy_6120 said:
Dear Microsim any help?
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I really cannot tell witch version is the correct one, I advice yout o make a new schematic, then I will review it with you, then you make a protoype. then a PCB

Thats the only way to make a final and succsefull SMPS.

Regards
 
MicrosiM

MicrosiM

Administrator
Staff member
SowaZ said:
Hi guys, I'm new :)

I join to ur question badboy, and I have a few, other question:

-Can I do this SMPS without oscilloscope?
-Which PCB and schematic+partlist are the best
-How much $$ parts for this project

Thanks guys, sorry for my eng, Im from pl :D
Click to expand...

-Can I do this SMPS without oscilloscope?

It could happen, but not guaranteed to success.


-Which PCB and schematic+partlist are the best

check my previous answer


-How much $$ parts for this project

around 60 US$
 
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badboy_6120

Member
B

badboy_6120

Member
I gathered all the parts of V2.1 of Ludo design
ETD49 (And Even I got ETD59)
wire 0.1 mm for transformer's windings
And other things

you guide so many people in this forum about making a standard PCB for this SMPS but unfortunately they didn't share their PCB with everybody in the end

I want, of course with your help to build the working and standard PCB of this circuit for everyone to use
 
MicrosiM

MicrosiM

Administrator
Staff member
badboy_6120 said:
I gathered all the parts of V2.1 of Ludo design
ETD49 (And Even I got ETD59)
wire 0.1 mm for transformer's windings
And other things

you guide so many people in this forum about making a standard PCB for this SMPS but unfortunately they didn't share their PCB with everybody in the end

I want, of course with your help to build the working and standard PCB of this circuit for everyone to use
Click to expand...


The circuit looks OK, but the protection sections is not completed as it looks.

You can start with it, but I advice you to test the circuit externally if you can.

I will try my best to help you out making the PCB, and as you can see, many folks made there own PCBs, but none of them shared there work, while I hope some one will kick in and share a PCB with you!

Good luck.
 
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badboy_6120

Member
but I advice you to test the circuit externally if you can
Click to expand...

what do you mean by this???
You mean on the breadboard???
If the main board and connections are right, I just make the pcb of V2.1 that Ludo designed it for this schematic and assemble the protection part on a breadboard
Is this what you mean?

after we could run the smps and everything's ok, I will redraw the new PCB with new parts
I plan to add the protection part on the main board and make it one
and also I want to minimize the paths between IR2110 to gates of mosfets
 
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badboy_6120

Member
Hello Microsim

I have all the parts except for MUR120 and MUR1520

But I do have MUR460 and MUR860 and MUR1560
Can I replace them with these????

In Schematic version 2.1 the output diode rectifier are MUR860 but in V3.1 they change to MUR1520 with more capability of current

MUR120 >>>>>replace with >>>>>>>MUR460 ?????
MUR1520 >>>>>> replace with >>>>>MUR1560??? Or should I go with V2.1 Schematic and use MUR860???
 
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badboy_6120

Member
Hello vdij

Thanks for sharing

Do you have the PDF version of its schematic?
Can you give some details about Power rating and also does it have any kinds of protection???
 
MicrosiM

MicrosiM

Administrator
Staff member
badboy_6120 said:
Hello Microsim

I have all the parts except for MUR120 and MUR1520

But I do have MUR460 and MUR860 and MUR1560
Can I replace them with these????

In Schematic version 2.1 the output diode rectifier are MUR860 but in V3.1 they change to MUR1520 with more capability of current

MUR120 >>>>>replace with >>>>>>>MUR460 ?????
MUR1520 >>>>>> replace with >>>>>MUR1560??? Or should I go with V2.1 Schematic and use MUR860???
Click to expand...


MUR860 >>>> MUR1520 is OK, you can use.

You have to try MUR460 instead of MU120.

Assemble section by section, and test that way also, dont asseble the whole PCB then power it up, dont expect it will work.

Assemble the SG3525 stage, make sure its WORKING, then assemble the IR2110 , make sure its working, etc.,,,


Good luck
 
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borysgo2

New member
Hello
I have small enquiry about Half-bridge smps, I do not feel that I am sure about a few things:

1. Does the half-bridge smps have to allways have output inductors after the rectiflers ?
2. If Yes can some one help me to calculate the choke values ? (Vin = 150V,= V out = 50V, I out = 6A, freq = 70kHz, current ripple 20%)
According to my (I think incorrec calculation) at I outmin = 0.2A the choke must have nearly 1mH ?

Or just putt the value from excellent7300 helper.

Big thanks
 
MicrosiM

MicrosiM

Administrator
Staff member
borysgo2 said:
Hello
I have small enquiry about Half-bridge smps, I do not feel that I am sure about a few things:

1. Does the half-bridge smps have to allways have output inductors after the rectiflers ?
2. If Yes can some one help me to calculate the choke values ? (Vin = 150V,= V out = 50V, I out = 6A, freq = 70kHz, current ripple 20%)
According to my (I think incorrec calculation) at I outmin = 0.2A the choke must have nearly 1mH ?

Or just putt the value from excellent7300 helper.

Big thanks
Click to expand...


Output inductors are needed if you are making a regulated SMPS, while I think you are not.
 
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