connect two step down converter

[yassin.kraouch]

Hi,
I have two step down converter 220AC/61VDC,
can i connect the output of this two driver together ?

many thanks,

 

[Genovator]

No. These two converter cannot be exact identical. Any one of them being higher in voltage by few millivolt will cause the other one to draw most of the current for output, crossing the maximum ratings... Any one of them will fry first...

 

[smijesh]

Hi,
I have two step down converter 220AC/61VDC,
can i connect the output of this two driver together ?

many thanks,

Switch mode or linear converter?

We can parallel the output of two or more converter with a rated diode in the +ve side.

 

[yassin.kraouch]

Yes its switch mode,
what is the requirement for the diode ?

 

[smijesh]

Yes its switch mode,
what is the requirement for the diode ?

More than the rated current of each power supply. This will prevent a unit that has short failure at the output from shorting the load.