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Need help How convert negative supply to positive supply

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shahrol_hisham

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negative supply from positive supply

Hi...

Can any body help me on design the converter from negative(-48v) voltage to positive(48v) voltage.

TQ
 

set negative supply

..just put the -48v into an isolated smps.........pick your topology......any will work .....some more suitable than others ....
......then set it up for 48V out.......
 

convert negative to positive voltage regulator

can it be done by changing reference?
 

how to connect negative supply at ic

Can you elaborate more about isolated smps cause i dont have an idea on it.
 

convert negative to positive times 2

isolated meaining using a transformer.....smps using ferrite transformer
 

negative from posite supply

Basically, it can be an inverting boost converter application. But I fear, there are no IC or modules for this application (not for negative polarity and 2*48V voltage level). So you have to design it. From available standard modules, an isolated 48/48 converter can do, as suggested.
 

negative supply

Can we just build the voltage divider and change the ref?

- 48VDc ---------R1---------R2----------R3----------- ref gnd
| |
-Voltage +voltage


Is this possible? Pls help......:cry:
 

obtain positive supply from a negative supply

or just connect the -ve voltage terminal to gnd pin of ic and gnd pin of -48v to +VE PIN of the ic.

ic is voltage positive regulator ,

any idea pls help.
 

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