Information

72 | Signal Chain Guide 2013 Texas Instruments
Monitoring and Control
Haptic Drivers
Get more information: www.ti.com/product/DRV2667
DRV2667 Industry’s Most Highly Integrated Piezo Haptic Driver
DRV2667
DRV2667 functional block diagram
Haptics is a technology that makes use of motor vibrations to create tactile response
in electronics, providing feedback that you can feel in addition to what you see and
hear. TI’s DRV2667 is a highly integrated piezo haptic driver featuring advanced digital
interface, configurable boost converter and high voltage amplifier. Unlike competing
devices, the DRV2667 does not require a large, expensive transformer, making it the
industry’s smallest complete single-chip solution for piezo haptic waveform genera
-
tion. High-voltage drive technology combined with ultra-small solution size make the
DR
V2667 ideal for systems requiring the best possible tactile feedback experience.
Key Features
• High-voltagedifferentialamplifier
generates up to 200 Vpp output allow-
ing support of a wide range of piezo
actuators
•
15Vto105Vboostconverter
eliminates the need for external
components and a transformer
•
Digitalinterface,integratedmemory
and 2-ms startup allow faster response
time and a more realistic experience
• Completesingle-chipsolutionforhigh-
voltage piezo haptics saves board
space and cost
• Piezohapticsenablesthehighest
fidelity “HD” haptic experience for a
wide range of pr
oducts such as smart-
phones, tablets, white goods and
automotive applications
Applications
• Smartphones
• Tablets
• E-readers
• Mouse/touchpads
• Remotecontrols
• Whitegoods
• Gamingmachines
C
VBST
VDD
VREG
SDA
SCL
IN+
IN-
VPUMP
GND
SW
VBST
PVDD
FB
OUT+
OUT-
REXT
L1
I
2
C
Analog
Input
R 1
R 2
Piezo
Actuator
3 V to 5.5 V
C
VDD
R
PU
R
PU
C
V
REG
C
PUMP
R
EXT
DRV2667