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Thread: FAQ BLDC motor shield with TLE9879QXA40 for Arduino

  1. #1
    Infineon Employee
    Infineon Employee
    Fiz is on a distinguished road
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    Jun 2019

    FAQ BLDC motor shield with TLE9879QXA40 for Arduino

    1) Can the board handle VBAT = 24V?
    The normal operating range for the TLE987QXA40 is 5.5V-28V.
    The board is capable of handling 24V, but it is not recommended to evaluate 24V truck applications since the IC is designed for 12V automotive applications.
    The absolute maximum ratings of the device must be ensured as specified in the datasheet.
    Especially the power loss in the PMU needs to be handled very carefully, since the internal linear voltage regulator will have to handle a much higher voltage drop.
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    Furthermore, the firmware is limited to 17.3V in the example codes.
    If you want to use the board at 24V, you have to adapt our code or write a custom firmware.

    Link to the datasheet: https://www.infineon.com/dgdl/Infine...5a89d10a283f20

    2) What is the boards maximal power output?
    The PCBs limitation is at 10A, due to the used copper thickness.
    The maximal value for the current sense amplifier is 30A, here the used 5mR shunt limits the maximal detectable current.
    The maximal current rating is valid for the entire voltage operating range.

    3) How much current could the MOSFETs handle?
    The used MOSFETs are IPC90N04S5-3R6 and can handle 90A. But the current is still limited by the PCB.

    Link to the datasheet: https://www.infineon.com/dgdl/Infine...590801d898290a

    4) How is the board protected from overcurrent?
    There is no discrete overcurrent protection in place on the PCB, but the TEL9879s’ protection features can be used to protect the board, such as:
    • Over-/Under-voltage protection
    • Drain-Source monitoring
    • Current limitation with the low side shunt

    5) Is there an Arduino library for torque control?
    At the moment there is only speed control implemented
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  2. #2
    New Member New Member kostas is on a distinguished road
    Join Date
    Aug 2020

    Is there an easy way to control the board through Raspberry Pi's SPI? Is there a document with the setup protocol?

    Thanks in advance.

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