DRV8830: Inquiry of RDSON and duty control

Intellectual 1445 points

Replies: 2

Views: 37

Part Number: DRV8830

Hi Team,

Would you support my customer's inquiry below because

there was no description on the data sheet.

■ DRV8830

・ Iout vs MDOUT1 / MDOUT2

      * I want to know how much the drop by Rds changes.

      * I want to know the behavior of Vcc = 3.5v / 4.0v / 4.5v (because Rds changes with Vcc)

・ When Vout is set to 5V, What is the behavior when Vcc is changed to lower than 5V?

      * I want to check the behavior when Vcc < set voltage

     * Does it Keep 100% duty for example?

Thanks

Best regards,

Shidara

 

2 Replies

  • Hi Shidara-san,

    Can you clarify the following questions?

    ・ Iout vs MDOUT1 / MDOUT2

          * I want to know how much the drop by Rds changes.

    HH -> Can you confirm if you are asking how much Rds drops as what parameter(s) changes?

          * I want to know the behavior of Vcc = 3.5v / 4.0v / 4.5v (because Rds changes with Vcc)

    HH -> The behavior of Rds as Vcc is set to those three values?

    ・ When Vout is set to 5V, What is the behavior when Vcc is changed to lower than 5V?

          * I want to check the behavior when Vcc < set voltage

    HH -> To what minimum Vcc value do you want confirmation?

     

    Hector Hernandez
    Motor Applications Team

  • In reply to Hector Hernandez Luque:

    Hi Shidara-san,

    Do you have an update here? Thank you.

     

    Hector Hernandez
    Motor Applications Team