SLVUCD3A November   2021  – August 2022 DRV8328

 

  1.   Abstract
  2. 1Introduction
  3. 2Quick Start Guide
  4. 3Hardware and Software Overview
    1. 3.1 Hardware Connections Overview – DRV8328AEVM + LAUNCHXL-F280049C
    2. 3.2 Connection Details
    3. 3.3 LED Lights
    4. 3.4 DRV8328AEVM Configurability and Switch Functions
      1. 3.4.1 DRV8328A/B Compatibility
      2. 3.4.2 DRV8328C/D Compatibility
    5. 3.5 Interfacing DRV8328AEVM and LAUNCHXL-F280049C LaunchPad
  5. 4Hardware Setup
  6. 5Firmware and GUI Application
    1. 5.1 Connecting to the DRV8328xEVM GUI
    2. 5.2 DRV8328AEVM GUI Quick Start Guide
    3. 5.3 Using the DRV8328AEVM-GUI
  7. 6Schematics
    1. 6.1  DRV8328A/B/C/D
    2. 6.2  DRV8328C/D variant select
    3. 6.3  Status LEDs
    4. 6.4  LaunchPad Connectors and Connections
    5. 6.5  External 3.3V LDO
    6. 6.6  Power Stage and MOSFETs
    7. 6.7  Main Supply Input
    8. 6.8  Hall Sensor and Hall Power Selection
    9. 6.9  Connectors, Selectors, and Analog Control Interface
    10. 6.10 Voltage Sense and Protection
  8.   Trademarks
  9. 7Revision History

3.4 DRV8328AEVM Configurability and Switch Functions

The DRV8328AEVM includes a variety of user-selectable jumpers and unpopulated components on the PCB to choose user settings and evaluate the DRV8328A, DRV8328B, DRV8328C, or DRV8328D device. A summary of those selectable settings is listed in Table 3-2 (defaults in bold) and can be seen on the board in Figure 3-6.

Section 3.4.1 and Section 3.4.2 describes the changes that need to be made to the board in order to use the variants of the DRV8328 device.

Table 3-2 Description of user selectable settings on DRV8328AEVM

Id.

Setting Name

Description

Position

Function

A

nSLEEP switch

Places DRV8328 in sleep mode

S1 = Right

Sleep mode

S1 = Left

Operating mode

B

External CSA output filter

RC output filter to suppress high frequency transients of CSA output from current shunt.

R59 = 56 ohms, C31 = 2200 pF

Fc ~1 MHz

C

Power stage MOSFETs and passive components

Optional passive components for tuning power stage, for example series gate resistors, RC snubbers, PVDD-GND capacitors, PVDD-LSS capacitors

R43, R44, R45, R49, R50, R51 = 10 ohm

Series gate resistors (GHA, GHB, GHC, GLA, GLB, GLC)

R40/C10, R41/C11, R42/C12, R55/C24, R56/C22, R57/C23

RC snubbers

(HS FET A, HS FET B, HS FET C, LS FET A, LS FET B, LS FET C)

C14, C16, C18 = 2.2 uF

PVDD-VDRAIN bypass capacitor

C19, C20, C21 = 0.01 uF

PVDD-LSS bypass capacitors

D

LDO jumpers

Jumpers to enable the external LDO and disable the LDO output. Remove jumpers if DRV8328C/D is used.

J8 = Populated

LDO is enabled

J8 = DNP

LDO is disabled

J16 = Populated

LDO outputs 3.3 V

J16 = DNP

LDO output removed

E

Dead time potentiometer, jumper, & resistor

Jumper to enable dead time control from potentiometer and potentiometer used to set the resistance for DT pin (DRV8328A/B only).

J14 = Populated

DT from pot is enabled

J14 = DNP

DT from pot is disabled

R99 (CW = more DT, CCW = less DT)

Sets dead time of gate outputs

R91

Fixed resistor for DT pin

F

HALL_PWR select

Use J6 to supply Hall power from 3.3 V or 5 V.

J11 = AVDD

Supplies AVDD to Hall power

J11 = EXT

Supply external hall power from HALL_PWR_EXT

G

VDSLVL potentiometer, select and disable jumpers

Potentiometer to set VDSLVL between 0.1-2.5 V, VDSLVL_SEL to select voltage source, disable jumper to disable VDSLVL

J15 = POT

VDSLVL set from potentiometer

J15 = EXT

VDSLVL set from VDS_EXT

J13 = Populated

VDSLVL is disabled (100 kΩ to GVDD)

J13 = DNP

VDSLVL is enabled

R92

Sets VDSLVL from 0.1 V-2.5 V

H

DRV8328 A/B or C/D select

0-ohm resistors to populate depending of variant of DRV8328 used on the EVM.

R1-R10 = DNP, R11 – R21 = 0-ohm

DRV8328A is populated

DRV8328B is populated

R1-R10 = 0-ohm, R11 – R21 = DNP

DRV8328C is populated

DRV8328D is populated

I

DRVOFF switch

Turns off the gate driver outputs.

S2 = Down

Drivers are on

S2 = Up

Drivers are off (DRVOFF is enabled)

J

Phase voltage feedback

Resistor divider and filtering capacitor for phase voltage feedback to MCU ADCs.

R67, R70, C45

Phase A voltage feedback

R68, R71, C46

Phase B voltage feedback

R69, R72, C47

Phase C voltage feedback
Figure 3-6 User-adjustable jumpers, resistors, and switches on DRV8328AEVM