Another IR2110 Problem 2 amps? And im new here!

Discussion in 'The Projects Forum' started by XPCam, Jan 12, 2015.

  1. XPCam

    Thread Starter New Member

    Jan 12, 2015
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    Hi im new here therefor Hello to everyone!,

    Im trying to build a metal detector using an IR2110 mosfet driver. I use 12 volts to drive the coil and to fed the mosfet driver. I use the driver as two low sides with 2 mosfets sepperated coil drivers. The fets i use are IRFS31N20DTRL that gives mee max 200v 30A and Rds-on is 0.082 Ohm but when im pulsing the driver the driver will take 2 amps is this oke?! at 10v it is taking around the 0.5 amps and i cant figgure out why its taking that mutch amperage.

    Im wondering why this occures beqourse it likes to schrink my batteries by the minute :)

    Christian (The Netherlands)
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,645
    2,344
    Hello,

    Can you post a schematic of your setup?
    You can use the Upload a File button below the reply window to attach the image.

    Bertus
     
  3. XPCam

    Thread Starter New Member

    Jan 12, 2015
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    Last edited: Jan 12, 2015
  4. XPCam

    Thread Starter New Member

    Jan 12, 2015
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    This is the Schematic i used.
     
  5. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    What are the input pulse parameters?
     
  6. XPCam

    Thread Starter New Member

    Jan 12, 2015
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    5v digital with a 10k resistor pulselength 200uS and closed time is 1000uS i tried to disconnect both coils and tried again and the mosfets get up to 100 degrees in a minute can it be the resistors at the gate? Ill try to replace those with 2 100nF's

    Christian
     
  7. XPCam

    Thread Starter New Member

    Jan 12, 2015
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    Problem Solved...
     
  8. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,004
    1,525
    Please post what problem you found, and what you did to fix it, to help others that in the future have a problem like this. :)
     
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