Date: 25th July 2011
Piezo haptic driver packs 105-V boost
converter, power diode, and 50-V to 200-V diff amp
Texas Instruments Incorporated (TI) has introduced the
DRV8662, a piezo haptic driver for mobile consumer and industrial
designs.
DRV8662 features an integrated 105-V boost converter, power
diode, and 50-V to 200-V peak-to-peak (Vpp) fully-differential
amplifier, resulting in a solution size that is 50 percent
smaller than leading competitors and also lowers total solution
cost by 40 percent compared to competing solutions, claims
TI.
"Realistic tactile feedback effects considerably enhance
the overall user experience of touch-enabled consumer electronics
devices," said Steve Anderson, senior vice president
of TI's High Performance Analog business. "The integration
of the DRV8662 haptics driver makes it easy to include effects
like localized vibrations and frequency variations in both
touch screen-input devices and those without a touch screen,
from mobile phones and tablets to computer accessories,
home appliances, and industrial automation consoles."
The Key features and benefits as per TI include:
Piezo modules enable fast start-up time (1.5 milliseconds),
thin form-factor and high bandwidth, resulting in the production
of haptic effects not possible with inertial-based actuators.
Drives piezo actuator capacitances from 50 to 680 nanofarad
(nF) at 300 Hz, enabling a wide variety of high-resolution
haptic effects, including feedback localized to specific
areas of the device, as well as vibrations and pulses that
change in frequency based on how the user is interacting
with the device.
Transformer-less design and wide supply range of 3.0 to
5.5-V with direct battery connection reduces solution size
and cost.
Thermal overload protection prevents damage when the device
is overdriven.
Available: Now
Price: $1.75 each for 1K units
Package: 4-mm x 4-mm x 0.9-mm QFN package
For more information visit: www.ti.com
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