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How can I connect a full bridge gate driver to an Arduino?

  1. Apr 6, 2017 #1
  2. jcsd
  3. Apr 7, 2017 #2

    Baluncore

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    You may need to isolate the Arduino from the H-bridge. We need more information before we can help.
    Please identify the H-bridge component(s) you will be using and what load will be driven.
    Also; what power supplies will be switched by the H-bridge?
     
  4. Apr 9, 2017 #3
    For the h-bridge I am using STP140N8F7 in the high side and either IRFZ40PbF or 2SK3845(Q) on the low side. The loads are 500W 24A DC motors and I think they will be supplied with 12V batteries.
     
  5. Apr 9, 2017 #4

    Baluncore

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    The IRS2453 is a free running inverter driver with a fixed duty cycle. It is optimised to drive high voltage inverter transformers.
    It is not designed to be driven with a PWM input signal or to drive a DC servo motor.
    There are many other lower voltage half or full bridge drivers available that can be controlled with a PWM signal from an Arduino.

    500W 24A DC motors suggests a 20 VDC rating, so I guess you will use the batteries in series to produce 24 volts.
     
  6. Apr 9, 2017 #5

    Baluncore

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    There is a BTS7960B DC Motor Driver H-Bridge PWM for the Arduino.
    See for example; http://www.instructables.com/id/Motor-Driver-BTS7960-43A/
    One board has two half bridges so it will drive one motor in an H-bridge.

    The BTS7960 has now been upgraded to the BTN7960 but the old part number is still best for searches.
    The assembled board is available for less than US$20 from many suppliers.
    https://www.aliexpress.com/item/Dou...32669153168.html?spm=2114.13010308.0.0.ZdOSLW

    Take a look here at the specs on the BTN7960 and download the data sheet.
    http://www.infineon.com/cms/en/prod...?productType=db3a304413719f72011372e9554e00da
     
    Last edited: Apr 9, 2017
  7. Apr 11, 2017 #6
  8. Apr 11, 2017 #7

    Baluncore

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    They are excellent MOSFETs. The inverter transformer being driven by the IRS2453 H-bridge would be limited to about 55V and 36A, which works out at 2 kW. Unfortunately you cannot control a motor with the IRS2453 as it is designed to drive a transformer load. It guarantees a duty cycle fixed between 48% and 52%. You can turn it on and off, but PWM is not possible.
    You are unsure because you cannot see how to do it, because it cannot actually be done. So you must identify a half-bridge driver that can be driven with a PWM signal and will drive your MOSFETs.

    The cost of the two half-bridge drivers needed will probably be more than the dual BTS7960B based H-bridge that comes assembled with integrated MOSFETs.
     
  9. Apr 11, 2017 #8
  10. Apr 11, 2017 #9

    Baluncore

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    The TC44xx are very low voltage drivers with VDD <= 18 volts. They are probably designed for 12V car battery operation.
    If your motor voltage will be greater than a 12V car battery you will need a driver designed for 30 to 80 volts. You do not need 600V.
     
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