Hardware Configuration
10
SLOU435B – December 2015 – Revised February 2019
Copyright © 2015–2019, Texas Instruments Incorporated
DRV2624 ERM, LRA haptic driver evaluation kit
4
Hardware Configuration
The DRV2624EVM-CT is very flexible and can be used to completely evaluate the DRV2624. The
following sections list the various hardware configurations.
4.1
Input and Output Overview
The DRV2624EVM-CT allows complete evaluation of the DRV2624 though test points, jacks, and
connectors.
gives a brief description of the hardware.
Table 2. Hardware Overview
Signal
Description
I/O
DRV TRIG
External input or monitor to DRV2624 IN/TRIG pin
Input/Output
NRST
External DRV2624 shutdown control
Input
OUT+/OUT–
Filtered output test points for observation, connect to oscilloscope or
measurement equipment
Output
USB
USB power (5 V)
Input
VBAT
External Supply Power (2.5 V – 5.5 V)
Input
SBW
MSP430 programming header
Input/Output
I
2
C
DRV2624 and MSP430 I
2
C bus
Input/Output
Hardware configuration details can be found in the following sections.
4.2
Power Supply Selection
The DRV2624EVM-CT can be powered by USB and an external power supply (VBAT). Jumpers J3 is
used to select USB or VBAT for the DRV2624 and MSP430G2553, respectively. See
for possible
configurations.
(1)
The DRV2624 supply must be on before operating the MSP430.
Table 3. Power Supply Configurations
Supply Configuration
DRV
MSP
DRV2624 Supply Voltage
(1)
USB – Both
USB
USB
5 V
DRV2624 external supply, MSP430
USB
VBAT
USB
VBAT
4.3
Using an External Actuator
The DRV2624EVM-CT can be used with an external actuator. Follow the instructions below to attach an
actuator to the
OUT
terminal block.
1. Remove jumpers J8 and J9 to disconnect the on-board actuators from the DRV2624.
2. Attach the positive and negative leads of the actuator to the green
OUT
terminal block keeping in mind
polarity.
3. Screw down the terminal block to secure the actuator leads.
Use the green terminal block when connecting an external actuator. The
OUT+
and
OUT–
test points
have low-pass filters and should only be used for oscilloscope and bench measurements.