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MCT8316A: Three-phase BLDC motor driver with integrated sensorless motor control algorithm

user6544449
Intellectual 795 points
Part Number: MCT8316A
Other Parts Discussed in Thread: MCF8316A

Hello Team,

currently I am selecting a intergrated brushless motor driver chip , and the requirement is that the size should be small and the working current should be as large as possible. We selected MCT8316A1VRGFR, and I would like to ask:

1. Is this one recommended for new design?

2. If it is recommended, I think this  is a non-inductive FOC vector control, using register to do vector control. If we directly use this chip, does the register have a default configuration?

3. The peak current of this new film is 8A. How much continuous current can support? It's not in this specification.

4. Does this chip only support FOC vector control? How about square wave control?

thanks !

  • +1
    TI__Mastermind 24415 points

    Hi!

    user6544449 said:
    1. Is this one recommended for new design?

    We recommend MCT8316A1VRGFR for new design. 

    user6544449 said:
    2. If it is recommended, I think this  is a non-inductive FOC vector control, using register to do vector control. If we directly use this chip, does the register have a default configuration?

    This device does not support. It has 6-step trapezoidal control algorithm pre-programmed in it and registers are available to configure the device. These registers can be saved in EEPROM. This devices comes with pre-programmed register configuration but the user should program the registers in EEPROM if the register configurations are different from the default values. We have MCF8316A which supports FOC. 

    user6544449 said:
    3. The peak current of this new film is 8A. How much continuous current can support? It's not in this specification.

    8A is the peak motor current but the device will trigger HW current limit at 8A so to maintain sufficient margins, we can push upto 7.5A peak current into the motor. This depends on how good the PCB is thermally designed. If the PCB cannot dissipate the power losses at 7.5A, die junction temperature will increase and when it hits 150C, device will trigger Over temperature fault. 

    user6544449 said:
    4. Does this chip only support FOC vector control? How about square wave control?

    MCF8316A supports FOC control.