Using An External Actuator; Pwm Input; Terminal Block And Test Points; External Pwm Input - Texas Instruments DRV2604EVM-CT User Manual

Hardware Configuration
4.3

Using an External Actuator

The DRV2604EVM-CT can be used with an external actuator. Follow the instructions below to attach an
actuator to the OUT terminal block.
1. Remove jumpers JP3 and JP4, which disconnects the on-board actuators from the DRV2604.
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.
It is important to use the green terminal block when connecting an external actuator. The OUT+ and OUT–
testpoints have low-pass filters and should only be used for oscilloscope and bench measurements.
4.4

PWM Input

AUDIO
MSP430
PWM/
GPIO
JP1
Shorted
Open
To control the DRV2604 using PWM, follow the instructions below:
1. Enter Additional Hardware
2. Select Mode 2 (00010'b) using the increment mode button (+).
• B1 – Disable Amplifier
• B2 – ERM Mode
• B3 – LRA Mode
14
DRV2604 ERM, LRA Haptic Driver Evaluation Kit
470pF
Figure 14. Terminal Block and Test Points
R40, 0Q
R41, NP
R43, 0Q
C11
R8
P3.1
JP1
SDA
SCL
SDA SCL
Figure 15. External PWM Input
PWM Source
MSP430
External PWM using PWM test point
Modes.
Copyright © 2013, Texas Instruments Incorporated
OUT- OUT+
OUT
470pF
100k 100k
From DRV2604
EN PWM
EN
IN/TRIG
SDA
SCL
DRV2604
OUT+
GND
VDD
OUT-
SLOU355 – March 2013
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