BOOSTXL-DRV8323RS is a 15A, three-phase brushless DC drive stage based
on the DRV8323RS gate driver and CSD88599Q5DC NexFETTM power blocks. The module has
an individual DC bus and three-phase voltage sensing as well as three low-side
current shunt amplifiers, making this board for BLDC/PMSM control with C2000
LaunchPad development kits suitable for use with the sensorless InstaSPIN-FOC
algorithm. The drive stage has IDRIVE configuration, along with a fault pin and
protection for short circuit, thermal, shoot-through, and under voltage conditions
through configurable SPI by C2000 MCUs.
- The BOOSTXL-DRV8323RS
Hardware Files are on the BOOSTXL-DRV8323RS page within ti.com.
- For more details about the BOOSTXL-DRV8323RS, see the User's Guide for the
EVM.
- Make sure that the following
items are completed as described below, and then connect the BOOSTXL-DRV8323RS to J1/J3 and J4/J2 of the LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 as shown in Figure 3-12.
- Populate C9, C10, and C11
with a 47nF capacitor.
- Bend J3-29 and J3-30 of
the LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 with 90 degrees so that they are not
connected to the BOOSTXL-DRV8323RS as shown in Figure 3-11.
- If using the DAC128S085EVM board, bend J5-42 of the LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 with 90 degrees to avoid connecting that
pin to the DAC128S085EVM board. This EVM board is only used for
debugging purposes to monitor various software variables, it's optional
and not nessary for a motor control.
- Bend J2-12 of the LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 with 90 degrees so that they are not
connected to the BOOSTXL-DRV8323RS. For LAUNCHXL-F280025C and LAUNCHXL-F280039C use a jumper wire to connect
J4-18(nSCS/GAIN) and J4-4 of BOOSTXL-DRV8323RS to use SPIA-STE of the C2000 device
directly as shown in Figure 3-11. For LAUNCHXL-F2800137 use a jumper wire to connect
J4-18(nSCS/GAIN) and J4-16 of BOOSTXL-DRV8323RS.
- Use a jumper wire to
connect J3-29 of the LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 to J3-11 of the BOOSTXL-DRV8323RS if the potentiometer functionality is
desired to be used on the BOOSTXL-DRV8323RS for setting the reference speed.
- Connect the motor, encoder, and
Hall sensors to the BOOSTXL-DRV8323RS and LAUNCHXL-F280025C, LAUNCHXL-F280039C, or LAUNCHXL-F2800137 boards as described in Table 3-2 and shown in Figure 3-12.
- Connect a supply voltage
ranging from 6 to 40 V from a battery or a DC voltage source to the
voltage supply pins as shown in Figure 3-12. The ABS max supply voltage rating for the DRV8323RS is 65V, so care
must be taken to ensure that the voltage does not exceed this value
during operation. This is particularly important while slowing down or
braking the motor, which can cause the supply voltage to rise
substantially. Power should only be applied when instructed to do so in
Section 3.5, keep disconnected otherwise.