• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 30 subscribers
  • Views 850 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

About usage of DRV8802-Q1 for 24V system

Tomoaki Yoshida
Expert 2200 points
Other Parts Discussed in Thread: DRV8802-Q1, DRV8802, DRV8301, DRV8711

Hi ,

 

There is a question about how of DRV8802-Q1 to use application 24 system.

Is the power supply targeting 24V system to it in this device, although the electrical characteristics of 24V is indicated to the datasheet?

I wonder  whether it can respond to load dumping that power supply voltage of abusolute maximum rating is only 47V.

How is load dumping coped with by the system of 24V system?

 

thanks.

  • 0
    TI__Mastermind 20985 points

    Yoshida-san, sorry I don't completely understand your question.  This device can be used in 24V systems, and it can withstand load dump events.  VM should stay less than 47V.

    If your system will have a load dump that increases the voltage above 47V, then it's recommended to add a Transient Voltage Suppressor.  That can be simply a diode that clamps the voltage.

    Best regards,
    RE

  • 0 in reply to RE
    TI__Mastermind 21305 points

    Hi Yoshida-san,

    Can you provide the exact load dump specification for your 24V system? As Ross mentioned, for voltages exceeding 47V external measures will need to be taken.

  • 0 in reply to Nicholas Oborny
    Expert 2200 points

    Hi,

     

    I am asked whether DRV8802 can bear the 60V  for  1 second.

    Then, I looked for other products.

    There is also a product  compensated 60V for the system of 24V system.

    For example, it is DRV8301.

    I wondered at this difference.
    I understood that there was a difference in the view that it is whether the measure in the exterior is necessity.

     

    thanks.

     

  • 0 in reply to Tomoaki Yoshida
    TI__Mastermind 20985 points

    The DRV8301 was designed with higher-voltage transistors, to allow up to 60V.

    If you need 2 H-bridge control like the DRV8802, with 60V support, we have the DRV8711.  It's not automotive qualified though, and it's a predriver that works with external FETs.

    Best regards,
    RE

  • 0 in reply to RE
    Expert 2200 points

    Hi,

     

    Thank you for reply.

    I will refer to your advice.

     

    thanks.