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UCC23513-Q1: supply voltage question

qianru shi
Prodigy 30 points
Part Number: UCC23513-Q1

Dear teams,

When I saw the typical application, I found that PWM could control this IC through the MOS (switch).

If I want to simplify it (don't use switch), could I use MCU to control it directly? Or is there any suggestion to achieve that?

Best Regards,

Nina

  • 0
    TI__Genius 15856 points

    Hi Nina,

    You can use the microcontroller to drive this diode emulator directly. It only requires 7mA whereas the microcontroller usually can output 20mA. Just make sure to a current limiting resistor small enough to source at least 7mA into the driver at the max possible 2.4V. For a 3.3V GPIO pin, that is (3.3-2.4) / 7mA = 128 Ohms. But also large enough to limit the current below the 20mA max of the microcontroller and the 16mA recommended max of the gate driver.

    Best regards,

    Sean  

  • 0 in reply to Sean Cashin
    Prodigy 30 points

    Hi Sean,

    Thanks a lot!

    Best regards,

    Nina