Help me design a 6V power supply

[saurav_sdpl]

I want to design a 6V power supply. But the problem is that the input to my linear regulator can go upto 4.8V, so i have to design a circuit which which gives 6V even at 4.8V input.

Can i do this using LM317 in which i build a 4V supply with zener at its common terminal.
I am not very sure of this .

Plz help

 

[ambreesh]

Re: Power supply

you need a boost converter.
Can be switchcap based or LC based

 

[farrokhiyan]

Re: Power supply

hi
because you have limitation on input voltage, you haven't any solution except the boost converter. if you are forced to this input voltage, you should do this. but because this solution is complicate and expensive, i suggest you, if your work isn't too sensitive, it is commodios to change your strategy for changing of input voltage.

 

[pinoy]

Power supply

You cannot use a linear regulator for this... Linear regulators regulate it's output by varying a drop across the FET/trAnsistor to maintain it's output voltage.

You may use buck-boost configuration/topology