• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 334 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TI H-bridge controller recommendation

charma56
Prodigy 70 points
Other Parts Discussed in Thread: DRV8320

I would like to use a full H-bridge controller to drive four ST STH310N10F7 N-channel MOSFETs for a 48V load at 25A, at a relatively low frequency (< 1 KHz).

A part like the TI DRV8701E seems like a step in the right direction but the maximum gate drive current (source 150mA / sink 300mA)  is still far below what is needed, and it is rated up to 45V rather than 48V.

Are there any TI parts that would be a better fit, or could there be a way to adapt existing parts to fit these requirements?

  • 0
    TI__Mastermind 21805 points

    Hello charma56,

    I would recommend using a device like DRV8320, which will have one more 1/2-H bridge than you need on the device, but can be used to drive an H-bridge and is 60V rated.

    Typically, to drive a FET like STH310N10F7 which has 34nC gate-to-drain charge, we would expect between ~68 mA (to achieve ~500ns rise time) and ~340 mA (to achieve ~100ns of rise time) of gate drive current to be required.

    Thanks,

    Matt