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johnsz

New Member
OK, I have a silly question but I'm sure so one can answer the question for me.

I'm trying to make a DC-DC comverter with an Input of 34VDC rated at 2 amps, and I'm thinking of bringing that down to 5VDC. My question is that would I only still have a maximum current of 2 amps or since my voltage went down will my current go up? I'm thinking of using an LM340 or somthing simular.

Thanks in Advance.

John
 

Sebi

Active Member
When You apply a dissipative regulator as LM340, the current of output equal to input. If the input voltage is 34V, output 5V, the difference 29V,multiple with 2A load = 58W dissipation (heat on LM340).
With switching regulator from 34V 2A input You can suck from output about 6A.
 

johnsz

New Member
Recommended Component

I appriciate your response. What component or design would you recommend? I'm trying to keep it as simple as possible, If thats possible.


John
 
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