Positive to Negative Power Supply

Discussion in 'General Electronics Chat' started by CraigHB, Oct 14, 2011.

  1. CraigHB

    Thread Starter Member

    Aug 12, 2011
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    Very nice. You think it would be possible to find a controller that would support something like this?;

    [​IMG]
     
  2. Wendy

    Moderator

    Mar 24, 2008
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    Last edited by a moderator: Oct 15, 2011
    SgtWookie likes this.
  3. SgtWookie

    Expert

    Jul 17, 2007
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    You'd need around 20A for the switching current, so you probably won't find a controller with an integrated switch that would handle that. One of the biggest problems is the low input voltage vs the Vf loss incurred in the diode; you'll lose ~0.6v or 0.6/3.5 = ~17% of your input power right there.

    With as low as 2.9v in and requiring 6v @ 5A out, figuring ~50% maximum duty cycle, 6v*5a/2.9v/50% ~=20.68 Amperes required.
     
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