24-12V Dc to Dc battery Charger

Discussion in 'Automotive Electronics' started by Redback_69, Dec 25, 2018.

  1. Redback_69

    Thread Starter New Member

    Dec 25, 2018
    2
    1
    We have a requirement to charge a 12v 7A secondary battery that powers on our board systems located on a Semi Trailer from a Truck's main power supply. The issue been is our Trucks power supply systems vary and either runs 24V or 12V systems.
     
  2. wayneh

    Expert

    Sep 9, 2010
    16,018
    6,114
    I don’t know anything about the electrical system in trucks but I’m surprised it can operate on either voltage. Is there not already a reliable 12V source on board somewhere?
     
  3. crutschow

    Expert

    Mar 14, 2008
    21,745
    6,270
    For charging a 12V battery from either a 12V or 24V system, you could use a 15V output buck-boost switcher converter to power a 12V battery charger circuit.
    Is this a make or buy charger?
    Does it need to charge when the engine is not running?
     
  4. Redback_69

    Thread Starter New Member

    Dec 25, 2018
    2
    1
    Thanks for the replies,

    We have several trucks different makes and models that run on a 12V Battery or 24V Battery power source. Standard Alt and Battery charging system.

    We have trailers that have a 12V 7a battery supply to power onboard devices when it is not attached to the truck power source , need to build/find a DC to DC charger to charge the trailer 12V 7A battery when connected to the truck. The issue we are facing is finding a battery charger that the accept Input 12-24V (truck power source) and output to 12V ( Trailer battery).

    Hope this helps
     
    wayneh likes this.
  5. Picbuster

    Well-Known Member

    Dec 2, 2013
    894
    117
    This might help
    https://www.comrod.com/products/power-supplies-battery-chargers/

    Picbuster
     
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