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Original question:

DRV11873: Can drive both BDC and BLDC

IC that can drive BDC and BLDC motors

Adria Arroyo
Prodigy 30 points
Other Parts Discussed in Thread: DRV8313, DRV8316, MCT8316Z

Hi,

There is some IC with half bridges integrated, that can manage both brushed and brushless motors (12V) (not in the same time)? (Maybe sharing two of the three half bridges that use BLDC motor with BDC motors)

  • 0
    TI__Mastermind 21805 points

    Hello Adria,

    Any BLDC motor driver without integrated control can be used to drive either a 3-phase BLDC or BDC motor. For example you can use DRV8316 or DRV8313 with the external MCU controlling the motor. These sorts of devices are three independent 1/2-H bridges and can be used to drive any load or combination of bridges.

    If your BLDC motor is sensored trap, you can use devices with 1x PWM to control either the BLDC motor in sensored trap or the BDC motor. For example MCT8316Z which supports sensored trap BLDC operation (the motor needs to have hall sensors). The MCU will only need to send a speed and direction command to the MCT8316Z instead of performing the motor control (less coding is needed). This device will APL within 1 week, the datasheet is attached. The MCT8316Z can also be configured to drive a brushed DC motor by configuring:

    • HPA = logic low, HPB = logic high, HPC = logic low, HNA/HNC/HNC = GND
      • You are operating in State 3 (A --> B) when DIR = 1 and State 6 (B --> A) when DIR = 0 from Table 8-4 of the datasheet.
    • PWM pin controls motor speed
    • DIR pin controls motor direction
    • The BDC motor is connected between phases A and B.

    Thanks,

    Matt