Driving Peltier Device through L298N to control Temperature

Discussion in 'The Projects Forum' started by sachin2611, Sep 10, 2013.

  1. sachin2611

    Thread Starter New Member

    Aug 1, 2013
    2
    0
    Hi,

    I want to drive peltier element to control temperature of one module. Peltier specifications are:
    Imax = 9A and Vmax = 3.75V.

    Such 4 peltiers are connected in series to control to module temperature.

    I am planning to use L298N for driving it. As shown if I connect L298N two pins in series then I will be able to drive current upto 4A. But, to control my module temperature, Peltier is sinking average 4A current.
    So, It I can't use single L298N IC as it will heat too much and also it will damage.

    So, I want to know whether it is possible to use two L298N ICs in parallel to give higher current.
    If so then please advice me for input and output pin connections.

    Thanks & Regards,
    Sachin Panchal
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,432
    3,360
    You don't need an L298N to drive a TEC. Just use a power MOSFET.
     
  3. wayneh

    Expert

    Sep 9, 2010
    12,100
    3,034
    And you'll need temperature feedback of some kind, if you hope to hold a temperature.
     
  4. RichardO

    Well-Known Member

    May 4, 2013
    1,230
    382
    Are you trying to both heat and cool with the Peltier device?
     
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