DRV2605L Datasheet, PDF (1/69 Pages) Texas Instruments – DRV2605L 2 to 5.2 V Haptic Driver for LRA and ERM With Effect Library and Smart-Loop Architecture

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV2605L
SLOS854C – MAY 2014 – REVISED SEPTEMBER 2014
DRV2605L 2 to 5.2 V Haptic Driver for LRA and ERM
With Effect Library and Smart-Loop Architecture
1 Features
•1 Flexible Haptic and Vibration Driver
– LRA (Linear Resonance Actuator)
– ERM (Eccentric Rotating Mass)
• I²C-Controlled Digital Playback Engine
– Waveform Sequencer and Trigger
– Real-Time Playback Mode through I²C
– I²C Dual-Mode Drive (Open and Closed Loop)
• Smart-Loop Architecture⁽¹⁾
– Automatic Overdrive and Braking
– Automatic Resonance Tracking and Reporting
(LRA Only)
– Automatic Actuator Diagnostic
– Automatic Level Calibration
– Wide Support for Actuator Models
• Licensed Immersion TouchSense^® 2200 features:
– Integrated Immersion Effect Library
– Audio-to-Vibe
• Drive Compensation Over Battery Discharge
• Wide Voltage Operation (2 V to 5.2 V)
• Efficient Differential Switching Output Drive
• PWM Input With 0% to 100% Duty-Cycle Control
Range
• Hardware Trigger Input
• Fast Start-up Time
• 1.8 V Compatible, V_DD-Tolerant Digital Interface
(1) _{Patent pending control algorithm}
2 Applications
• Mobile Phones and Tablets
• Watches and Wearable Technology
• Remote Controls, Mice, and Peripheral Devices
• Touch-Enabled Devices
• Industrial Human-Machine Interfaces
• Electronic Point of Sale (ePOS)
3 Description
The DRV2605L device is a low-voltage haptic driver
which includes a haptic-effect library and provides a
closed-loop actuator-control system for high-quality
haptic feedback for ERM and LRA. This schema
helps improve actuator performance in terms of
acceleration consistency, start time, and brake time
and is accessible through a shared I²C compatible
bus or PWM input signal.
1
The DRV2605L device offers a licensed version of
TouchSense 2200 software from Immersion which
eliminates the need to design haptic waveforms
because the software includes over 100 licensed
effects (6 ERM libraries and 1 LRA library) and audio-
to-vibe features.
Additionally, the real-time playback mode allows the
host processor to bypass the library playback engine
and play waveforms directly from the host through
I²C.
The smart-loop architecture inside the DRV2605L
device allows simple auto-resonant drive for the LRA
as well as feedback-optimized ERM drive allowing for
automatic overdrive and braking. This architecture
creates a simplified input waveform interface as well
as reliable motor control and consistent motor
performance. The DRV2605L device also features
automatic transition to an open-loop system in the
event that an LRA actuator is not generating a valid
back-EMF voltage. When the LRA generates a valid
back-EMF voltage, the DRV2605L device
automatically synchronizes with the LRA. The
DRV2605L also allows for open-loop driving through
the use of internally-generated PWM. Additionally, the
audio-to-vibe mode automatically converts an audio
input signal to meaningful tactile effects.
For an important notice regarding Immersion
software, see the Legal Notice section.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (MAX)
DRV2605L
DSBGA (9)
1.50 mm × 1.50 mm
DRV2605L
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
VDD
Supply
correction
ROM
Gate
drive
OUT+
SDA
SCL
EN
IN/TRIG
REG
I²C I/F
REG
Control and
playback
engine
Back-EMF
detection
Gate
drive
LRA
M or
ERM
OUT±
GND
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.