BOOSTXL-DRV8320H: Operation mode and hall input

Hi na na78,

"1.

This kit uses MSP430F5529LP and its firmware to drive motor in 1 x PWM sensored software.

Does it use closed loop operation?"

>>> It does not used closed loop. The code is used to demonstrate of the basic operation of the device.

"2.

Does 1 x PWM sensored software implement advanced angle control method?"

>>> The 1x PWM sensored software does not implement advanced angle control. The code can be modified to do so if desired.

"2.

If motor has hall outputs like A+/-, B+/- and C+/-, we can use A+, B+, and C+ signal to driver input.

Is my understanding correct?"

>>> Yes, your understanding is correct.

Hi Rick,

I am working with this thread owner.
For the question #2, I guess it is impossible to implement the phase angle advance in case of 1x PWM mode, because the commutation state is synchronized to the states of hall sensor's states, and there is no option to delay the commutation state machine. In case of 6 PWM mode, it is possible to add delay time by MCU.
Could you please let me hear your thoughts?

Thanks,
Nobuhiko Wasa

Hi Wasa-san,

It is not possible to implement phase angle advance in 1x PWM mode if the hall sensors are directly connected to the DRV8320. It is possible to implement phase angle advance in 1x PWM mode if the hall sensors are connected to the mcu, and the mcu controls the DRV8320 inputs.

The mcu can adjust the timing in 1x, 3x, or 6x PWM modes.

Hi Rick,

Thanks for your prompt reply. Let me talk with the customer.

Regards,
Nobuhiko Wasa