Hey everyone,
I am looking to regulate 60V at 10-11A current.
I have come around TL783 regulator which regulates upto 125V but max current is 0.7A.
In its datasheet I found a circuit with current boost.(Attached here)
I was wondering if it can boost 10A or not, and if not are there any other ways?
Any suggestions would be of great help.
Thanks!

 

It would be better with just a Pnp series pass transistor like Tip34C, or darlington type 2N6287, the Npn won't regulate the circuit.

 

A quick estimate, That one looks like it is capable of 100 amps, except the transistors would smoke at 6500 watts.
Lower the input voltage and control the heat and I'd say it can do 10 amps.
You might need (2) TIPL762s just to keep it cool.

the Npn won't regulate the circuit.

The TL783 regulates the NPN.

 

This is the sort of thing that is usually done with phase controlled SCRs to these days a buck converter (almost the same thing). If the ripple out of a buck converter is unacceptable, you can use the buck converter as a pre-regulator to provide just enough voltage to your linear regulator to keep it in regulation -that is to minimize dissipation in the linear part.

 

Start at the begining with the basics.

What is the actual input voltage and source and what are you wanting t to power with it?

 

I am sure you want to try and build and I am always happy to build things. However there are people out there that have build a Boost Converter that will do what your looking for...

MingHe BST900. It will power upto 120v from as low input voltage of 8-60v input. Has 10 storage spots for running a setup for multi items. All you would need to do is load the memory you want to run and it will bring up the Volt and current you saved to the spot. 15A output is also already setup with a Fan to help keep it cool.

This setup is very complex, to me looks to be built well. One of the plus for me anyway is the display can be mounted outside of case with the top display being detachable then mount with cable and pins to main unit makes for a nice clean look.

For the price of one I think it would be hard to buy each part on the 2 PCB under the price of the unit.

 

Thank you all for your replies, and sorry for my late reply. (I was on vacation )

Okay so let me start over. I am using a step down transformer, bridge rectifier and LC filter on 220V AC line, and then want to generate regulated output of 60V which should be able to draw 11A current. I am not yet sure about the total impedance of the circuit which I want to power through this setup, but max limit on required current is around 11A.

I haven't used buck-boost converters before. I am willing to use one if I can get hold of more info such as converter model,circuit diagram, peripheral components etc. I tried googling myself the above mentioned things but the results were bit complex for me.

 

Do you want only a fixed 60V output?

 

Yes. 60V

 

How well regulated and why? +- 10%, 1%, .1%

Knowing the load helps a lot on the design of a power supply.

Some precision electronic circuits need sub 1% regulation to work well, while others like motors, lights, heaters and whatnot are not the least bit fussy about marginal voltage regulation and or overall power source cleanliness. For them a bridge rectifier and a fair sized capacitor is plenty good.

 

Yes. 60V

You still have not said what voltage will arrive at this regulator, and it makes a lot of difference.
If you give it 62 volts and want 60 volts, the regulator will dissipate 22 watts at 11 amps.
If you give it 120 volts and want 60 volts, it will dissipate 660 watts at 11 amps.
It gets a lot worse if you try to dial the output down to 2 volts.
There is no single transistor that can dissipate 660 watts (that I know about).

We have a lot of know-how, but it doesn't work without some information to start with.

 

There is no single transistor that can dissipate 660 watts (that I know about).

The large package brick type industrial application devices can easily swing that power dissipation level in those power ranges

Heatsink design and capacity becomes the bigger issue with those more than anything. 660+ watts with all passive heat dissipation takes a huge amount of heat sink root mass and surface area!

 

660+ watts with all passive heat dissipation

You and I can bolt this thing to an inch thick of steel, but I'd rather have the T.S. define his needs.

 

You still have not said what voltage will arrive at this regulator, and it makes a lot of difference.
If you give it 62 volts and want 60 volts, the regulator will dissipate 22 watts at 11 amps.
If you give it 120 volts and want 60 volts, it will dissipate 660 watts at 11 amps.
It gets a lot worse if you try to dial the output down to 2 volts.
There is no single transistor that can dissipate 660 watts (that I know about).

We have a lot of know-how, but it doesn't work without some information to start with.

The voltage arriving at regulator is oscillating between 60 to 64 V