Can I connect switching regulators like this?

picstudent

New Member

• Aug 21, 2009

• #1

I have (locally available and cheap)a switching regulator which can take 37V input, but I need to drive from a 60V source. can i use a arrangement like this?

 

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Hero999

Banned

• Aug 21, 2009

• #2

No, you can't do that.

 

picstudent

New Member

• Aug 21, 2009

• #3

Thanks .That solved my first issue in a disappointing way Hi!.

Then, I need to derive +5V @1A and 12V @ 1Amps from a varying supply (40vDC to 60VDC).
( I have measure and display this input voltage, that is what I am going to do )
What would you recommend I should do to get my DC rails?

Thanks for the response

 

Hero999

Banned

• Aug 21, 2009

• #4

Use an IC that will work from 60V.
**broken link removed**

 

picstudent

New Member

• Aug 21, 2009

• #5

I read that page and it seems that it will give only 7.5V max output. I need to drive big 4" 7Segment display.So need 12Volts

Thanks

edit
sorry it will give upto 70V.

But no locally available, may have to get from farnel at high cost. LM2576 was availble

Thanks

 

Last edited: Aug 21, 2009

Hero999

Banned

• Aug 21, 2009

• #6

You've misread it, it'll give up to 70V out and will take up to 75V in.