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Thread: Questions regarding Infineon BTN8962

  1. #1
    Beginner Beginner kynix is on a distinguished road
    Join Date
    Jul 2016

    Questions regarding Infineon BTN8962

    I want to design a BDC driving board with Infineon BTN8962.(Infineon BTN8962 is a half of H-bridge IC)

    As we all know,BDC driving circuit is just like this:

    In this picture,We set a High side MOS(QA) as Open,and set a High side(QC) and a Low side(QB) MOSes as close.We just have to ouput a PWM signal to control the speed of BDC.

    But when I use Infineon BTN8962,I found I cound not do this unless using the INH pin as PWM signal input pin.(But in fact,this pin is sleep mode enable pin.It can close its MOS.)

    Which pin should I set as PWM signal output pin?

  2. #2

    Infineon Employee
    Infineon Employee
    Jing.N is on a distinguished road
    Join Date
    Jun 2018
    You are right. In this case , you should set a PWM signal at INH pin. This is the most efficient way to control the speed of you motor.
    If you are using the BTN8962TA as a half bridge (as shown in figure 17 in the datasheet) it would be also possible to use the IN Pin for PMW. But in this case you force the motor to slow down when the LSS is active. So this will be pretty inefficient.

    Please find the datasheet below:
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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