SLVUCD3A November 2021 – August 2022 DRV8328
- Abstract
- 1Introduction
- 2Quick Start Guide
- 3Hardware and Software Overview
- 4Hardware Setup
- 5Firmware and GUI Application
-
6Schematics
- 6.1 DRV8328A/B/C/D
- 6.2 DRV8328C/D variant select
- 6.3 Status LEDs
- 6.4 LaunchPad Connectors and Connections
- 6.5 External 3.3V LDO
- 6.6 Power Stage and MOSFETs
- 6.7 Main Supply Input
- 6.8 Hall Sensor and Hall Power Selection
- 6.9 Connectors, Selectors, and Analog Control Interface
- 6.10 Voltage Sense and Protection
- Trademarks
- 7Revision History
3.4.2 DRV8328C/D Compatibility
The DRV8328AEVM is also compatible with the DRV8328C and DRV8328D variants to spin a 3-phase Brushless-DC motor but requires modifications to the EVM. The main modifications are removing and populating the correct 0-ohm resistors so pins of the DRV8328C/D variants are properly configured for their functions.
The DRV8328C and DRV8328D device remove the VDSLVL and dead time pins and are replaced with a DRVOFF shutdown pin and LDO (AVDD). The main difference between the two devices are that DRV8328C operates in 6x PWM mode and DRV8328D operates in 3x PWM mode.
Figure 3-8 shows the default components to select the C/D variant when the DRV8328C or DRV8328D is used. Ensure resistors R11-R21 are removed, resistors R1-R10 are populated, and C1 is populated. You can use the spare capacitor C45 to populate to C1.
It is also good to remove J8 and J16 to prevent AVDD from back-powering into the external LDO since AVDD comes from the DRV8328C/D.
Figure 3-8 Resistors to populate for DRV8328C/D deviceTable 3-4 shows the resistors to be only populated as well as their pin and functions.
DRV8328C/D Pin | Function | Populated Components |
|---|---|---|
18 | DRVOFF | R6 |
19 | AVDD | R4/C1 |
20 | INHC | R2 |
21 | INHB | R7 |
22 | INHA | R5 |
23 | INLC | R3 |
24 | INLB | R8 |
25 | INLA | R1 |
26 | nSLEEP | R10 |
27 | nFAULT | R9 |