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Low-Voltage H-Bridge Driver DRV8832, is this driver appropriate for 4-quadrant DC motor MOTION control?

Tihomir Zilic
Intellectual 350 points
Other Parts Discussed in Thread: DRV8832, DRV8837, DRV8833

Here are just several brief notes/descriptions of the laboratory setup:

- There are tree pendulums, each driven (balanced) by its own DC motor (motor supply voltage is 6V, max. current 1 A). The three F28377D Delfino Experimenter Kit microcontrollers (one per motor)  control the pendulums in real-time. Between the microcontrollers and the motors are motor drivers. The goal is to control pendulums positions of very fast oscillatory dynamics of spring-connected inverted pendulums.

Question about motor drivers:
Using external (coming from microcontrollers) PWM input signals to Low-Voltage H-Bridge Driver DRV8832, is this driver appropriate for 4-quadrant DC motor MOTION control?
Note: I prefer DRV8832 it versus DRV8837 due to current limiter and current sensing.

  • 0
    TI__Mastermind 26065 points
    Hi Tihomir,

    I think you will need control the motor FW/CCW quickly to control the position. In that case, DRV8832 has some weakness as the internal PWM for output voltage regulation will always kick in between your external PWM control. Also the interal loop need 2ms to 12ms time constant based on the VREF setting. This will slow down your total control response.

    DRV8837 is good but as you said it has no current limit and sensing. But DRV8837 do have the OCP protection as if your motor start/stall current will not trip the OCP level at 6V, it will be good option.

    DRV8833 can be also considered with the current regulation and limit, also no the close-loop function as DRV8832.

    It is recommended to get some EVMs of those parts and have a quick test base on your requirements.

    Best regards,
  • 0 in reply to Wilson Zuo
    Intellectual 350 points
    Hi Wilson, thank you very much for the good comment/suggestion! I'll try with DRV8833.