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Propeller to Mosfet Driver connection - do I need resistors? — Parallax Forums

Propeller to Mosfet Driver connection - do I need resistors?

ElectricAyeElectricAye Posts: 4,561
edited 2012-08-31 18:31 in Propeller 1
I would like to connect a Propeller chip to a mosfet driver (http://www.ti.com/lit/ds/symlink/ucc27321.pdf), and I know that when I drive a mosfet directly from a prop, I need to use a couple of resistors as shown in this diagram by Phil Pilgrim:

attachment.php?attachmentid=64181

But are these same resistors needed when the Propeller drives a mosfet driver? I'm guessing these resistors are needed but I'm not really sure.

Thanks.

Comments

  • jmgjmg Posts: 15,173
    edited 2012-08-31 18:24
    ElectricAye wrote: »

    But are these same resistors needed when the Propeller drives a mosfet driver? I'm guessing these resistors are needed but I'm not really sure.

    It is common for MOSFET drivers to include resistors, to default pins on floating drive, but that one does not.
    So you need an external one.
  • ElectricAyeElectricAye Posts: 4,561
    edited 2012-08-31 18:31
    jmg wrote: »
    It is common for MOSFET drivers to include resistors, to default pins on floating drive, but that one does not.
    So you need an external one.

    Thanks, I just wanted to make sure I understood the diagram.
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