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Daer Sir/Madam;
The C2000 Piccolo MCU F28069M LaunchPad™ development kit ( LAUNCHXL-F28069M) recommends the interface kit BOOSTXL-DRV8301
(see http://www.ti.com/tool/LAUNCHXL-F28069M)
and
(http://www.ti.com/tool/BOOSTXL-DRV8301?DCMP=drv8301-boosterpack&HQS=drv8301-boosterpack)
As shown on sheet 4 and 5 of the schematics:
C:\Users\a0272436\Documents\TI\Boards\LAUNCHXL2-F28069M\LAUNCHXL-F28069_B_1400922.sch (Sheet: 4/7)
C:\Users\a0272436\Documents\TI\Boards\LAUNCHXL2-F28069M\LAUNCHXL-F28069_B_1400922.sch (Sheet: 5/7)
The GPIO pins GPIO0, GPIO1, GPIO2, GPIO3, GPIO4, and GPIO5 show they are connected to
1PWM_AH - GPIO0
1PWM_AL - GPIO1
1PWM_BH - GPIO2
1PWM_BL - GPIO3
1PWM_CH - GPIO4
1PWM_CL - GPIO5
Additionally, the schematics for the BOOSTXL-DRV8301
(which can be found in the downloadable zip file: href="//www.ti.com/lit/zip/slvc539" or BOOSTXL-DRV8301 ) on
http://www.ti.com/tool/BOOSTXL-DRV8301?DCMP=drv8301-boosterpack&HQS=drv8301-boosterpack
show the connection of the CPU to the DRV8301 chip on sheets 1 and 2 as being:
PWM_AH
PWM_AL
PWM_BH
PWM_BL
PWM_CH
PWM_CL
Thus confirming that there are 6 connections required and each pair has a High and a Low PWM signal.
Now the MathLab/Simulink Example which states "Note: This example requires a TI F28069 LaunchPad with 2 BOOSTXL-DRV8301 booster packs connected to Three-Phase Brushless Motors" and can be found in the Texas Instruments Embedded Coder Examples file named "c28069pmsmfocdual_ert.slx" found in the examples under
"Permanent Magnet Synchronous Motor Field-Oriented Control"
2 BOOSTXL-DRV8301 + LAUNCHXL-F28069M C2000 Piccolo LaunchPad: c28069pmsmfocdual_ert.slx
This example shows only THREE (3) ePWM blocks ePWM1, ePWM2, and ePWM3 for one motor and appears to ignore the High and Low gating.
Whereas the example "c2812pmsmsim.slx" in "Simulation of a FOC Using PMSM Model" shows connections for the full six PWM's
PWM1/PWM2 and PWM3/PWM4 and PWM5/PWM6
Shouldn't there be SIX ePWM modules on the c28069pmsmfocdual_ert.slx example?
Please consult with your Matlab/Simulink breathren and consider providing a useful answer. I'm sure both companies can work together to promote the sales of Texas Instruments products.
Thanks.
