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eyeR Interceptor: 25Amp PWM FET Module Add-on

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  • eyeR Interceptor: 25Amp PWM FET Module Add-on

    UPDATED 27-FEB-10

    The eyeR Interceptor FET Moudule add-on is a convienient way to drive high current devices easilly and safely.


    Click image for larger version

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    • Upto 25Amps continuous current rating
    • fully encapsulated for safety
    • Advanced FET driver stabilizing circuitry ensures the device runs super cool, even at high PWM frequency
    • 1" x 1" x 0.7" form factor! (not including mounting tabs)
    • LED status for output (LED will dim depending on output power)

    This module can be used for:
    • Variable control of heavy duty motors such as radiator fans
    • Replacing that 4-position blower switch in your HVAC system and get up to 255 blower settings
    • Hi-Speed Solid state relay control
    • Boost solenoid control
    • High current light dimmer

    The modules are available in 2 different types:
    • 25A P-type
    • 25A N-type

    So what are the differences between N-tpye and P-type?
    Say you want to control a heavy duty fan,
    If one end of the fan is permantly fixed to +V (positive) you would need a N-type module
    If one end of the fan is permantly fixed to GND (negative) you would need a P-type module

    Basically N-type sinks current and P-type sources current.

    Equivalent circuits for N-Type & P-Type respectively

    Click image for larger version

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    Related eyeR stuff: HERE

  • #2
    What control input ?

    Excuse my noobness, but I would like to know what kind of signal is used to contol this product ?
    I have an Adaptronic E420c ECU in my car that is capable of outputing a PWM signal that varies
    with engine temperature. And I would like to know if I could control my radiator fan, using the ECU
    signal to modulate this 25Amp Add-on module ?

    Cheers... jondee86


    • #3
      The PWM FET module can accept a 2.5v - 15v input. So basically it can support any PWM input signal, i.e 3.3v, 5v, 12v. etc


      • #4
        Excellent My ECU switches 12V to ground in PWM mode (12V==> solenoid==> ECU==> Ground).
        So I am assuming that if I connect the dotted line/wire to the input of the ECU, that will be
        adequate to control the FET ?? That is, if I use the P-Type module, the black wire is essentially
        replaced by the ECU ground wire ?? If so, where do I buy one

        Cheers... jondee86


        • #5
          Yes, connecting the dotted line/wire input to the ECU will work fine. All the work of driving the FET is done internally, so no need to worry about that. The GND wire of the FET module needs to be connected to ECU ground (Chassis).

          In regards to availability, yes that link needs to be updated!!

          I will have more ready within 1 week. I will PM you when I have more ready if you are still interested.


          • #6
            Yep... for sure I'll take one. Just let me know when they are available.

            Thanks for your assistance

            Cheers... jondee86