100k

470pF

100k

470pF

OUT

OUT-

OUT+

From DRV2603

Hardware Configuration

www.ti.com

Table 2. Hardware Overview (continued)

Signal

Description

I/O

The audio jack is connected to an ADC on the MSP430. This is used for

Audio

Input

audio-to-haptics conversion using special software on the MSP430.

Hardware configuration details can be found in the following sections.

3.2

Power Supply Selection

The DRV2603EVM-CT can be powered by USB or an external power supply (VBAT). Jumpers “DRV” and

“MSP” are used to select USB or VBAT for the DRV2603 and MSP430G2553, respectively. See the

following table for possible configurations.

Supply Configuration

DRV

MSP

DRV2603 Supply Voltage

(1)

USB – Both

USB

USB

5V

DRV2603 External Supply, MSP430

VBAT

USB

VBAT

USB

External Supply - Both

VBAT

VBAT

VBAT

USB with 3.3V LDO

USB

USB

3.3V (R4 = Short, R5 = Open)

(1)

The DRV2603 supply must be on before operating the MSP430.

(2)

If a 3.3V DRV2603 supply voltage is preferred while using the USB as the power source, remove R5 and add a zero ohm

resistor across R4.

3.3

Using an External Actuator

Figure 8. Terminal Block and Test Points

The DRV2603EVM-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 will disconnect the on-board actuators from the DRV2603.

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.

8

DRV2603 ERM/LRA Haptic Driver Evaluation Kit

SLOU340A – May 2012 – Revised May 2012

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