here is the datasheet and im using this ic uc3843 so please help me make it like what are the possibility to make it.
datasheet https://www.ti.com/lit/ds/symlink/uc3841.pdf?ts=1682233099632&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUC3841
and this is the ckt that im gonna trying to make it
Do you really need 3 independent 5V DC outputs?
What are the values (resistors, capacitors)?
What is the AC input for?
Where is the AC from? You have put the negative end on ground. It is rather easy to touch ground... and it might be at -60V... (compared to ground reference elsewhere in your house (depending if AC input is isolated or not)).
Do you realise that 60V is in the dangerous (deadly) area?
I think you didnt get it
im saying that trying to make dc-dc flyback converter input 40-60v dc and output 5v Dc 1A
so how i can design
I think I did get it. And I do not understand why you would like to build this...
It is a lot of work. Apparently you do not know how to design it.
Buy a buck converter off the shelve...
The three outputs of that circuit are unregulated, not 5V.
Did you notice that the Absolute Maximum supply voltage for the IC you linked to was 32V?
Although not fully regulated, the 3 transformer outputs should track each other and also the N2 winding, which is regulated.
My guess is that itsashutamar just posted the first schematic from the IC datasheet that looked vaguely correct.
Regardless, the voltage is not 5V.
But we are just wasting time here, so I wish the OP good luck.
My biggest concern would be where to buy the exact transformer you need. I think they are usually custom made for the power the power supply manufacturer.
If you don't need isolation you can use a design that uses an inductor instead of a transformer (easier to source).
Your circuit is for AC but it should work with DC input, since there is a full-wave rectifier and filter capacitor (to convert to DC) shown on the input.
That chip is only rated to 32V.
...The ground is isolated on the input side so that doesn't worry me except the 60V is dangerous during testing/debugging/troubleshooting. It's safe once everything is enclosed.
I agree.
The unspecified transformer would probably need to be custom wound.
Designing switch mode power supplies is not a job for an amateur with limited design knowledge.
i want single 5v with 1A
I know this is not suitable suggest according to you how i can design it really helpful you suggest the ckt without any switching ic
the input volt is coming from ev battery 40-60v so i want drive my device with 5v thats why i need this type of dc-dc flyback converter
i want single 5v i will adjust it after testing
i know that im expecting the you guys can suggest a ckt according to my requirement
that is 40-60v input dc-dc flyback isolated converter
5v 1A output
what i can to get 5vdc 1A output by using 40-60v dc input with flyback isolation
so how i can get 5v 1A
yes agree can suggest the ckt for my desired output without any switching ic or with ic as well whatever the solution will be helpful
As suggested by many here:
Buy a switch mode power module (buck converter).
Do not build this yourself.
see i want flyback isolated dc to dc converter with
40-60v input
5v 1A outout
