SMPS transformer design tool
- Thread starter Dimonis
- Start date
Can you share this tool? I 've a russian friend here, he can help me translate that
Many thanks,
Mike
Dimonis
New member
Can you post a screenshot of the prog.window ? And describe what performance you want from your transformer?
szhighstar
New member
Thanks friends!
I will summarize some design examples about flyback and forward transfomer and CMC and DCM for reference.
I submitted PFC inductor design example in other thread.
DMC: Differential Mode Chokes
CMC: Common Mode Chokes
PFC: Power Factor Correction Choke
MAIN TRANS: Main switching power transformer
MAC: Magnetic Amps Choke for regulations
CS: Current Transformer
SMOOTHING CHOKE: Output differential mode filtering choke
NORMAL CHOKE: Output Inductor
DRIVING TRANS: Drive transformer
AUX TRANS: Auxillary transformer for housekeeping supply
I will summarize some design examples about flyback and forward transfomer and CMC and DCM for reference.
I submitted PFC inductor design example in other thread.
DMC: Differential Mode Chokes
CMC: Common Mode Chokes
PFC: Power Factor Correction Choke
MAIN TRANS: Main switching power transformer
MAC: Magnetic Amps Choke for regulations
CS: Current Transformer
SMOOTHING CHOKE: Output differential mode filtering choke
NORMAL CHOKE: Output Inductor
DRIVING TRANS: Drive transformer
AUX TRANS: Auxillary transformer for housekeeping supply
Hi Dimonis
Thank you for a great effort.
Some small observations:
1. No help available.
2. Not intuitive placement. The output data is in the middle of two input data. Not a problem, just an observation
3. Addition of material type different from the list you have provided, does not seem to work. The core dimensions are accepted, as well as the core data like Ae and Ve, but the core material name is not being accepted in the list.
4. If the core chosen produces power less than the required output, then why is the option displayed as output? Or maybe a color change could be used to signify to the user that he is going the wrong way?
5. Is there any possibility of more topologies also? like Forward, Sepic, Cuk and so on
6. What about designing inductors also?
7. What about updates o the software?
8. What about systems where there are more than one switch in parallel?
All in all, an excellent initial effort. Needs polishing, thats all
Once again, Thank you very much.
Shiv
Thank you for a great effort
.Some small observations:
1. No help available.
2. Not intuitive placement. The output data is in the middle of two input data. Not a problem, just an observation
3. Addition of material type different from the list you have provided, does not seem to work. The core dimensions are accepted, as well as the core data like Ae and Ve, but the core material name is not being accepted in the list.
4. If the core chosen produces power less than the required output, then why is the option displayed as output? Or maybe a color change could be used to signify to the user that he is going the wrong way?
5. Is there any possibility of more topologies also? like Forward, Sepic, Cuk and so on
6. What about designing inductors also?
7. What about updates o the software?
8. What about systems where there are more than one switch in parallel?
All in all, an excellent initial effort. Needs polishing, thats all
Once again, Thank you very much.
Shiv
jagdeepsingh
Member
hello can anyone tell me how to calculate
Ae (mm^2) CROSS SECTION AREA
An (mm^2) AREA OF CORE WINDOW
le (mm) LENGTH OF MAGNETIC PATH
ve (cm^3) CORE VOLUME
PLEASE HELP
Ae (mm^2) CROSS SECTION AREA
An (mm^2) AREA OF CORE WINDOW
le (mm) LENGTH OF MAGNETIC PATH
ve (cm^3) CORE VOLUME
PLEASE HELP
tebci
New member
Could you please give more information's about the design?
are you looking to calculate that for a core? or do you want to calculate turns?
regards
Hi, you can find the values in the datasheet of the core of your transformer
example
ETD44 Epcos
Σl/A = 0.6 mm–1
le = 103 mm
Ae = 173 mm2
Amin = 172 mm2
Ve = 17800 mm3
An can be found in the datasheet of your coil former
electro_luis
New member
Hi all!
Thanks for this tool, is very usefull! But, one thing, the switching frecuency is the transformer switching? or the controller switching? As far as I know, the switching controller in a half bridge runs at twice frecuency than the core.
Regards!
Thanks for this tool, is very usefull! But, one thing, the switching frecuency is the transformer switching? or the controller switching? As far as I know, the switching controller in a half bridge runs at twice frecuency than the core.
Regards!
jagdeepsingh
Member
hello i want to make transformer for smps dc to ac inverter
i'm using sg3525 50KHz duty cycle 50%
primary voltage 24v
secondry voltage 400v
i want output power of 3000 to 4000 watt
and
primary voltage 48v
secondry voltage 400v
i want output power of 3000 to 4000 watt
core size
[E 71/33/32 N87]
Ae=683
An=284
le=149
Ve=102
mu=1780
can you calculate me primary secondry turns??
Last edited:
Dimonis
New member
Don't think you can manage that !
You need ONE turn in primary! (Even less !!!!!) How are you gonna wind such?
Here's your calculations. I guessed that it'll be push-pull ???
Attachments
-
e71.JPG
Last edited:
Dimonis
New member
Yes.
P.S. Some controllers have equal freq.