AC to DC and DC to AC ( inverter ) circuit design using SMPS technique

Can anybody help on on SMPS system. Can anybody post me circuit diagram of AC to DC and DC to AC ( inverter ) circuit using SMPS technique. Thanx in advance

computer smps circuit diagram

http://www.powerint.com/

circuit of smps

Hi,

Try this .

https://www.smps.us/smpsdesign.html

I think it will be of some help

smps circuit

zio_nneo said:

Can anybody help on on SMPS system. Can anybody post me circuit diagram of AC to DC and DC to AC ( inverter ) circuit using SMPS technique. Thanx in advance

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There are many sites where U will find valuable info in adition to those mentioned.

Fairchild www.fairchildsemi.com www.st.com and

**broken link removed**

The last is only for inductor design boost, buck, flyback ....

The programs that provide each manufactured support their manufacturer chips.

The most friendly and direct are the one from poer integration although the last version does not support old IC like TOP226.

The site of Professor Walter Schmidt is VERY USEFUL.

Well these are the most important I remember although infineon also has it´s program too as many others.

Hope this help U

Osvaldo

ir2153 smps

this is a circuit of 200 watt half bridge ATX power supply It works fine
with minor changes you can use power mosfets intead of biploar transistors which are used and then increase your output power up to 600 watt. I have recently designed a 600 w with this circuit it works fine

simple smps circuit

I want to start from very simple SMPS design.Can anybody expalin me from very begining.

smps circuit diagram

zio_nneo said:

I want to start from very simple SMPS design.Can anybody expalin me from very begining.

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Well, first give us specs VACin min & max
Vout & Iout. If you just wish to start with a not too much complicated design, a pwr suppli AC to DC of abt 30W is a good start point. Power Integration site will bring a lot of info for making such design with their components and using their design assistance tool will speed up your design. Be carefull with the magnetics, read carefully their app note abt flyback inductor design and construction.
Do not desperate, a SMPS is not an easy task. Be carefull when measuring your prototype, remember that if you work with an offline PS, the primary is connected to the AC line, so you will need to isolate your AC powered instruments with a TRANSFORMER NO an autrotransformer.
Well hope this help a little.
Let the forum know if U need further assistance.
Regards

parts of smps

I came to know that transformer used in SMPS power supply is ferrite core.How to design transformer for given specification. Is there any mathematical derivation for this. If you have can you provide me. I am very much interested in SMPS supply.

schmidt walter fbe darmstadt de smps

zio_nneo said:

I came to know that transformer used in SMPS power supply is ferrite core.How to design transformer for given specification. Is there any mathematical derivation for this. If you have can you provide me. I am very much interested in SMPS supply.

Click to expand...

If you visit the link www.powerint.com U will acces to almost all the info U need.
If any doubt appear then ask here.
For downloading their SMPS design tool U must register, try it, is FREE.

Regarding the ferrite material, yes it is used for the core of the inductors, as this material has less loses that laminated SiFe. When working at higher frequency, the inductor size comes smaller. If U make a design with power integration IC´s the switching freq will be from abt 72 Khz to 132 Khz.

Of course the are converters working in the MHz range, in such case the inductors comes very small but suggest U start with fs abt 100 KHz.

Regardin PI Designer, you start selecting de device, later you enter de input & output parameter and voila, the program will bring you almos all the info U need to start the construction of your SMPS. You shall need to pay special attention to the PCB layout, forget of using protoboard like modules. At PI site you´ll be able to find board layouts references too. Do not forget the other site I´ve mentioned, TI, NS, ST Fairchild, IR, Infineon, LINEAR. In those sites you will be able to get tons of info. If looking for further literature, search EDABOARD book downloads, here u will soprprice for the quantity of books available.
Hope to be of help for U.
Best Regards.
Osvaldo

circuit diagram of computer smps

I have visited the site you have mention where they have used the one IC for the control purpose. Is it possible to do the same function using transistor like photo transistor , optocoupler etc. looking for your help.Also I would like to mention that I have tried one circuit that has been used in computer power supply but that was really risky. It was blast because of simple mistake. Looking for your help.

smps ir2153

Sorry.. I do not understand. Can u tell me wich is the circuit u are talking about ?

Regards

ir2153 schematics

while I had visted that site powerint there are lots of SMPS circuit but all of them uses the TOPSwitch-HX Family. Is there any alternative for this sothat we can perform this function using the other transistor. I think it is used in feedback loop.

12v 5a smps design

Guess that when you said transistor, you mean IC.

Well, as I told U before, If U have installed their software, U start a design entering Input values for example U specify Vac min and max ( suggest U do not make a first design with universal AC input just for making your job easy )

Then the next step is to enter Output values Vo and Io.

Do not remember if U have to select the device before. In case U have to, they have a device selector sheet in which U select the device to use in the design.

If U wish, send me your input and output values then I`ll make a design usign PI soft. May be that when U receive the file generated by the program and U see it, you will realize what to do.
Best regards

schmidt-walter.fbe.fh-darmstadt.de

zio_nneo, first go for some understanding and make simple DC DC circuit rather than AC DC circuit. Latter are less risky and making is easy. Say start with LM3524 IC DC DC Converter circuit. You can find application note for it on the web. When you build the circuit and see the wave form at different points. You will be able to understand the things. Also following book will be of great help before starting

"Practical Switching Power Supply Design by martin brown"

You can also find in this book how to design Transformer and Inductor for the SMPS. The basic transfomer equation also work with these transformers.

Regards

simple circuits smps

I am glad to see there are much of interest about SMPS. I am not really interested in design but I am interested in repair. Recently I have encountered with a Vega 650W SMPS from Lambda compny. It has 8 outputs ((24V/5A, 12V/6A, module H5_3 with two output), (24V/5A, 12V/6A, module H5_3 with two output), (24V/5A, 5V/8A, module H5_1 with two output), (5V/25A, Module B2 with single output), (24V/10A, module C5 with single output)) . As you can see power supply is modular and all outputs are adjustable. Unfortunatly some parts close to the input (inverter) badly exploded. I never seen such a thing before and I can't read parts identifications to order them. So I need schematic for at least inverter section. I will appriciate if any one can help.

Also another question. What might be the cause in the first stages of inverter? Is that possible one of the loads conected to one of the outputs got overloaded or problem is just related to inverter and I don't need to worry about problem in the circuits connected to outputs. I want to order a new one if I couldn't repair this and I don't whant the same thing happens to thr new one again. Any recommendation how to avoid this?

Regards

transformer smps 132khz

If the components are as you said near the input (I take it electrically too), then the most probable cause is high spikes and surges, behind the input filter control. OR input storage caps (mostly connected as doubler) might get unbalanced for many reasons etc etc. So the problems cannot be said surley unless to see the schematic or physical.

Regards

smps inverter circuits

try this one

smps circuit 240v

Awarapunshee

There are 4 Mosfets all badly burned. Just like struked by a tunder. 4 resistors conected to them also have burn holes in the midle of them. Two thiny closeby transistors are also exploded and metal inside them can be seen. seems no way for repairing this PS, because no information on the parts and no circuit schematic.

I have decided to use three spare SMPS I have (build for PC). These power supplies each have four 12 volt (16A) and some other outputs. I need 69V(5A), 24V(10A), -12 & +12 (6A), -5 (8A) and +5 (25A) for the instrument was using the failed Lambda power supply. 69V was generated by connecting three 24 volt outputs of the Lambda power supply in series.

Now If I connect six 12 V outputs of the PC power suplies in series then I can have 72 volts. Other outputs I need also is possible by connecting different outputs in series. The problem is how to make 72 volts come down to 69 volts, because instrument clearly says this voltage should be below 70. Outputs of Lambda PS was adjustable and I was possible to adjust the three 24 volts in series to make 67 volts but outputs of PC power supplies are fixed. Now problem with connecting 6 12 Volt outputs in series to get 72 volts is how to bring down this 72 volts at least 3 volts?

Thanks

Added after 1 hours 8 minutes:

Sorry a silly mistake. Not possible to connect PC power supplies in series since they don't have separate ground for each output

ir2153 schematic

steve_rb

It is some time due to both MOSFET turn on simultaneously, if in a pushpull config. (couple of reasons including input capacitance of MOSFET's not properly discharged or due to higher frequency than discharged time, dead time control malfuction etc etc) and some reason are discussed above.

Regards

ir2153 power supply

any body have circuit with pcb for the smps