DRV2605EVM-BT Datasheet, PDF (6/34 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – evaluation kit for the DRV2605 ERM and LRA Haptic Driver.

Hardware Overview
VBQOUT
VBAT
GND
S2
EG1257
D13
Orange
VUSB
J2
11
1
10
2
9
3
8
4
7
5
6
ZX62-B-5PA(11)
GND
GND
RSTDC0DDDNPR0D4N0P0DRN4P1R42
13
C17
1µF
2
3
C16
4.7µF 1
GND R12
15
10.0k
R13
7.32k
12
R16
14.7k 16
R17
8.66k
U3
IN
OUT
OUT
BAT
BAT
TS
ITERM
CHG
PGOOD
EN1
EN2
CE
ILIM
TMR
ISET
EP
VSS
BQ24232RGTR
GND
Battery Management
C15
10
4.7µF
11
R9
GND
9
1.50k
VBQOUT
R11
0
7
VBQOUT _DN0RP14
6
R15
5
VUSB ^DN0P
GND
4
R44 R18
14
0
0
17
8
DN0RP45 _GND
GND
R19
0 _GND
GND
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CAUTION
To minimize risk of personal injury or property damage, never use rechargeable
batteries to power the boards. Only use 1.5V AAA alkaline batteries.
Connect only either the included USB cable or the included AAA battery pack.
In an event that both are connected, the BQ24232 selects the power source
using the Dynamic Power Path Management (DPPM) feature. Refer to the
datasheet of BQ24232 for more information about this feature.
TI does not recommend any changes to the circuitry around the BQ24232.
Figure 4. Battery / Power Source Management
5.3 TPS63051 Buck-Boost Converter
The onboard TPS63051 DC-DC converter is used to power the board including the Bluetooth radio and
LEDs. The TPS63051 is a fixed-voltage part meaning that the output voltage is steady at 3.3 V even for
any changes in the battery voltage within the operating conditions. An automatic buck boost switching
converter is desirable in this application to provide a steady output in cases where the battery voltage is
unsteady analogous to the typical voltage drain of a battery. The PGOOD LED D14 indicates that the
board is powered-up and the DC-DC converter is operational. The board is configured in PFM mode
through a resistor R37 which pulls the PFM/PWM pin to low. The REGVDD is the fixed 3.3-V rail for the
board.
6
DRV2605EVM-BT User's Guide
Copyright © 2014, Texas Instruments Incorporated
SLOU391 – May 2014
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