Texas Instruments EVM for Piezo Haptic Driver with Boost, Digital Front End, and Internal Waveform Memory DRV2667EVM-CT DRV2667EVM-CT 数据表
产品代码
DRV2667EVM-CT
C
VBST
VDD
VREG
SDA
SCL
IN+
IN-
VPUMP
GND
SW
VBST
PVDD
FB
OUT+
OUT-
REXT
L1
I2C
Analog
Input
R 1
R 2
Piezo
Actuator
Actuator
3 V to 5.5 V
C
VDD
R
PU
R
PU
C
VREG
C
PUMP
R
EXT
DRV2667
SLOS751A – MARCH 2013 – REVISED JANUARY 2014
Piezo Haptic Driver with Boost, Digital Front End, and Internal Waveform Memory
Check for Samples:
1
FEATURES
DESCRIPTION
The DRV2667 is a piezo haptic driver with integrated
•
Integrated Digital Front End
105
V
boost
switch,
integrated
power
diode,
–
I
2
C Bus Control up to 400 kHz
integrated fully-differential amplifier, and integrated
–
Advanced Waveform Synthesizer
digital front end. This versatile device is capable of
driving both high-voltage and low-voltage piezo haptic
driving both high-voltage and low-voltage piezo haptic
–
2 kB Internal Waveform Memory
actuators. The input signal can be driven over the I
2
C
–
Internal 100 Byte FIFO Interface
port or the analog inputs.
–
Immersion TS5000 Compliant
The DRV2667 digital interface is available via an I
2
C
–
Optional Analog Inputs
compatible bus. A digital interface relieves the costly
•
High Voltage Piezo-Haptic Driver
processor burden of PWM generation or additional
analog channel requirements in the host system. Any
analog channel requirements in the host system. Any
–
Drives up to 100 nF at 200 V
PP
and 300 Hz
writes to the internal FIFO will automatically wake up
–
Drives up to 150 nF at 150 V
PP
and 300 Hz
the device and begin playing the waveform after the 2
–
Drives up to 330 nF at 100 V
PP
and 300 Hz
ms internal startup procedure. When the data flow
stops or the FIFO under-runs, the device will
stops or the FIFO under-runs, the device will
–
Drives up to 680 nF at 50 V
PP
and 300 Hz
automatically enter a pop-less shutdown procedure.
–
Differential Output
The DRV2667 also includes deep volatile waveform
•
Integrated 105 V Boost Converter
memory to store and recall waveforms with minimal
–
Adjustable Boost Voltage
latency as well as an advanced waveform synthesizer
–
Adjustable Boost Current Limit
to construct complex haptic waveforms with minimal
memory usage. This provide a means of hardware
memory usage. This provide a means of hardware
–
Integrated Power FET and Diode
acceleration, relieving the host processor of haptic
–
No Transformer Required
generation duties as well as minimizing bus traffic
•
Fast Start Up Time of 2 ms (typical)
over the haptic interface.
•
Wide Supply Voltage Range of 3 V to 5.5 V
The boost voltage is set using two external resistors,
•
1.8 V Compatible, VDD Tolerant Digital Pins
and the boost current limit is programmable via the
R
R
EXT
resistor. A typical start-up time of 2 ms makes
•
Available in a 4 mm × 4 mm × 0.9 mm QFN
the DRV2667 an ideal piezo driver for fast haptic
package (RGP)
responses. Thermal overload protection prevents the
•
Pin-Similar with DRV8662 and Pin-Compatible
device from being damaged when overdriven.
with DRV2665
APPLICATIONS
•
Mobile Phones
•
Tablets
•
Portable Computers
•
Keyboards and Mice
•
Electronic Gaming
•
Touch Enabled Devices
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2013–2014, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.