Other Parts Discussed in Thread: DRV8305, TIDA-00643, , TIDA-00916
I am trying to design an ESC which is able to drive two motors independently with the same MCU, TMS320F28069M, in my case as the minimum area is the main concern I have decided to try to use the 80 pin package to drive both motor driivers (DRV8305) and sense the voltage and currents of the half bridges. I am planning to use an SPI bootloader. The main objective is to design a similar board as the TIDA-00643,same driver,MOSFETS, power and protection but with the TMS320F28069M processor which is able to drive two motors.
Based on both TIDA layouts provided i am trying to connect the pins of the MCU with the drivers and I have few questions:
I have three questions,
1) the first one is related with the VSEN of PVDD as in the 100 pin packages is done by adcina7 but in this case this adc is not available in this package, it is needed to test this pin or is not needed?
2) EN_GATE for both drivers, 1 and 2 in TIDA-00916 is connected to GPIO50 and GPIO53 which are not available in the 80 pin package, there is any other alternative GPIO port that i can use?
3) Similar problem I have with the DAC which are connected to GPIO40, GPIO41, GPIO42 AND GPIO43. I am not completely sure if the DAC signals are needed or it is only for testing purposes?
Thank you in advance