One big regutator or several small ones....

Discussion in 'General Electronics Chat' started by Gibson486, Feb 4, 2014.

  1. Gibson486

    Thread Starter Member

    Jul 20, 2012
    199
    12
    I am doing this circuit that has 15 pic controllers that control proportional valves with PWM....Am I better off having 15 small regulators or one really big one?
     
    Last edited: Feb 4, 2014
  2. wayneh

    Expert

    Sep 9, 2010
    12,094
    3,033
    My preference, for efficiency of parts and design effort, would be to invest in a single supply and make it to the appropriate specs (voltage, amps, ripple, and so on).
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,425
    3,359
    Depends on the voltage and current each module consumes and the distance separating the module from the main power supply.
     
  4. crutschow

    Expert

    Mar 14, 2008
    12,993
    3,227
    In some cases, for remote loads, a main DC supply is used (switching type if you want good efficiency) generating a voltage output slightly above the desired voltage with a low-dropout linear regulator at each load point to give good local regulation and decoupling of the power.
     
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