Texas Instruments DRV2605EVM-BT 데이터 시트
EN
A1
VREG
A2
OUT+
A3
IN/TRIG
B1
SDA
B2
GND
B3
SCL
C1
VDD
C2
OUT-
C3
U1
DRV2605YZF
GND
GND
GND
SCL
SDA
Place Motor Pads
DRV_EN
0.1uF
C2
10.0k
R8
10.0k
R1
REG_VDD
1µF
C3
VBQOUT
VBAT
0
R38
0
R39
DRV_TRIG
OUT+
OUT-
TP1
TP2
Hardware Overview
5
Hardware Overview
5.1
DRV2605 Haptic Driver
The DRV2605EVM-BT’s DRV2605 haptic driver is powered by onboard bq24232 battery management
chip. The DRV2605 is capable of driving ERM and LRA actuators. The BLE microcontroller's I2C, EN and
trigger pins are connected to the DRV2605. There are 123 library effects embedded inside the DRV2605.
The DRV2605 is configured to play LRA actuator waveforms on statup which can be configured differently
if needed. The DRV2605EVM-BT has optional pad to set into an external trigger mode to play a particular
pattern on an external microcontroller output trigger. An example of this is described in
chip. The DRV2605 is capable of driving ERM and LRA actuators. The BLE microcontroller's I2C, EN and
trigger pins are connected to the DRV2605. There are 123 library effects embedded inside the DRV2605.
The DRV2605 is configured to play LRA actuator waveforms on statup which can be configured differently
if needed. The DRV2605EVM-BT has optional pad to set into an external trigger mode to play a particular
pattern on an external microcontroller output trigger. An example of this is described in
There are two capacitors: one for decoupling and the other for the internal regulator of the chip. The
rectangular bounding silkscreen around the DRV2605 on the DRV2605EVM-BT highlights the solution
size.
rectangular bounding silkscreen around the DRV2605 on the DRV2605EVM-BT highlights the solution
size.
Figure 3. Smart Haptic Driver
5.2
BQ24232 Battery Management IC
The bq24232 is a USB-capable lithium-ion battery charger with dynamic power path management. This
chip is purely used in this application to manage the selection of the power supply between a battery pack
or a USB source. The battery management chip delivers power directly to the DRV2605 haptic driver and
the TPS63051 DC-DC buck-boost converter. Net VBQOUT is the output of the battery management chip.
chip is purely used in this application to manage the selection of the power supply between a battery pack
or a USB source. The battery management chip delivers power directly to the DRV2605 haptic driver and
the TPS63051 DC-DC buck-boost converter. Net VBQOUT is the output of the battery management chip.
5
SLOU391 – May 2014
DRV2605EVM-BT User's Guide
Copyright © 2014, Texas Instruments Incorporated