DRV2665 Driver Datasheet

DRV2665 Datasheet, PDF, Equivalent


Part Number

DRV2665

Description

Piezo Haptic Driver

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download DRV2665 Datasheet


DRV2665
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DRV2665
SLOS740B – MAY 2012 – REVISED AUGUST 2015
DRV2665 Piezo Haptic Driver with Integrated Boost Converter and Digital Front End
1 Features
1 Integrated Digital Front End
– Up to 400-kHz I2C Bus Control
– 100-Byte Internal FIFO Interface
– Immersion TS5000-Compliant
– Optional Analog Inputs
• High Voltage Piezo-Haptic Driver
– Drives up to 100 nF at 200 VPP and 300 Hz
– Drives up to 150 nF at 150 VPP and 300 Hz
– Drives up to 330 nF at 100 VPP and 300 Hz
– Drives up to 680 nF at 50 VPP and 300 Hz
– Differential Output
• 105-V Integrated Boost Converter
– Adjustable Boost Voltage
– Adjustable Boost Current Limit
– Integrated Power FET and Diode
– No Transformer Required
• 2-ms Fast Start Up Time
• 3- to 5.5-V Wide Supply Voltage Range
• 1.8-V Compatible, VDD Tolerant Digital Pins
2 Applications
• Mobile Phones
• Tablets
• Portable Computers
• Keyboards and Mice
• Electronic Gaming
• Touch Enabled Devices
3 Description
The DRV2665 device is a piezo haptic driver with
integrated 105-V boost switch, integrated power
diode, integrated fully-differential amplifier, and
integrated digital front end. This versatile device is
capable of driving both high-voltage and low-voltage
piezo haptic actuators. The input signal can be driven
as haptic packets over the I2C port or through the
analog inputs.
The digital interface of the DRV2665 device is
available through an I2C compatible bus. A digital
interface relieves the costly processor burden of the
PWM generation or additional analog channel
requirements in the host system. Any writes to the
internal first-in, first-out buffer (FIFO) will
automatically wake up the device and begin playing
the waveform after the 2 ms internal start-up
procedure. When the data flow stops or the FIFO
under-runs, the DRV2665 device will automatically
enter a pop-less shutdown procedure.
The boost voltage is set using two external resistors,
and the boost current limit is programmable through
the REXT resistor. A typical start-up time of 2 ms
makes the DRV2665 device an ideal piezo driver for
fast haptic responses. Thermal overload protection
prevents the device from being damaged when
overdriven.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (MAX)
DRV2665
QFN (20)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
3.0 V to 5.5 V
I2C
Analog
Input
Simplified Schematic
L1
C(VDD)
CBULK
VDD
C(REG)
REG
RPU RPU
SDA
SCL
IN+
IN-
SW
BST
PVDD
FB
OUT+
OUT-
C(BST)
R1
R2
Piezo
Actuator
PUMP
C(PUMP)
GND
REXT
R(EXT)
1
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.

DRV2665
DRV2665
SLOS740B – MAY 2012 – REVISED AUGUST 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Switching Characteristics .......................................... 6
6.8 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 12
7.5 Programming........................................................... 13
7.6 Register Map........................................................... 17
8 Application and Implementation ........................ 20
8.1 Application Information............................................ 20
8.2 Typical Application ................................................. 21
8.3 Initialization Setup ................................................... 23
9 Power Supply Recommendations...................... 23
10 Layout................................................................... 24
10.1 Layout Guidelines ................................................. 24
10.2 Layout Example .................................................... 24
11 Device and Documentation Support ................. 25
11.1 Community Resources.......................................... 25
11.2 Trademarks ........................................................... 25
11.3 Electrostatic Discharge Caution ............................ 25
11.4 Glossary ................................................................ 25
12 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (January 2014) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes section, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section. .............................................................. 1
• Added Exception description to Brownout Protection section .............................................................................................. 11
Changes from Original (May 2012) to Revision A
Page
• Changed from one-page data sheet to full data sheet in product folder ................................................................................ 1
2 Submit Documentation Feedback
Product Folder Links: DRV2665
Copyright © 2012–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design DRV2665 SL OS740B – MAY 2012 – REVISED AUGUST 2015 DRV2665 Piezo Haptic Driver with I ntegrated Boost Converter and Digital F ront End 1 Features •1 Integrated Di gital Front End – Up to 400-kHz I2C B us Control – 100-Byte Internal FIFO I nterface – Immersion TS5000-Compliant – Optional Analog Inputs • High Vo ltage Piezo-Haptic Driver – Drives up to 100 nF at 200 VPP and 300 Hz – Dr ives up to 150 nF at 150 VPP and 300 Hz – Drives up to 330 nF at 100 VPP and 300 Hz – Drives up to 680 nF at 50 V PP and 300 Hz – Differential Output 105-V Integrated Boost Converter – Adjustable Boost Voltage – Adjustabl e Boost Current Limit – Integrated Po wer FET and Diode – No Transformer Re quired • 2-ms Fast Start Up Time • 3- to 5.5-V Wide Supply Voltage Range 1.8-V Compatible, VDD Tolerant Digit al Pins 2 Applications • Mobile Phones • Tablets • Portable Computers • Keyboards and Mice • Electronic G.
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