Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - motor controllers Half-bridge (2) Parallel, PWM QFN 10

Gate

Drive

VDD

GND

LRA or

DC Motor

DRV2603

2.5 V – 5.2 V

OUT+

OUT-

Control

Engine

Level

Correction

Supply

Correction

VDD

Gate

Drive

Back-EMF

Detection

PWM

LRA / ERM

DRV2603

www.ti.com

SLOS754A –JUNE 2012–REVISED JANUARY 2014

Haptic Drive with Auto-Resonance Detection for Linear Resonance Actuators (LRA)

Check for Samples: DRV2603

FEATURES

DESCRIPTION

The DRV2603 is a haptic driver designed specifically

• Flexible Haptic/Vibra Driver

to solve common obstacles in driving both Linear

– LRA (Linear Resonance Actuator)

Resonance Actuator (LRA) and Eccentric Rotating

– ERM (Eccentric Rotating Mass)

Mass (ERM) haptic elements. The DRV2603 is also

designed for low latency, has excellent efficiency, and

• Auto Resonance Tracking for LRA

plenty of drive strength for actuators commonly used

– No Frequency Calibration Required

in the portable market.

– Automatic Drive Commutation

LRA actuators typically have a narrow frequency

– Automatic Braking Algorithm

band over which they have an adequate haptic

– Wide Input PWM Frequency Range

response. This frequency window is typically ±2.5 Hz

wide or less, so driving an LRA actuator presents a

• Constant Vibration Strength Over Supply

challenge. The DRV2603 solves this problem by

• Automatic Input Level Translation

employing auto resonance tracking, which

• 0% to 100% Duty Cycle Control Range

automatically detects and tracks the optimum

commutation frequency. This means that any input

• Fast Start Up Time

PWM frequency within the input range (10 kHz to 250

• Differential Drive from Single-Ended Input

kHz) will automatically produce the correct resonant

• Wide Supply Voltage Range of 2.5 V to 5.2 V

output frequency. As an additional benefit, the

DRV2603 implements an optimal braking algorithm to

• 1.8 V Compatible, 5 V Tolerant Digital Pins

stop the LRA from ringing out, leaving the user with a

• Available in a 2 mm × 2 mm × 0.75 mm

crisp haptic sensation.

leadless QFN package (RUN)

For both ERM and LRA actuators, the automatic input

level translation solves issues with low voltage PWM

APPLICATIONS

sources without adding additional external

• Mobile Phones

components, so if the digital I/O levels vary, the

• Tablets

output voltage does not change. The DRV2603 also

has supply correction that ensures no supply

• Touch Enabled Devices

regulation is required for constant vibration strength,

allowing an efficient, direct-battery connection.

spacer

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (18 pages)

PAGE 1
DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 Haptic Drive with Auto-Resonance Detection for Linear Resonance Actuators (LRA) Check for Samples: DRV2603 FEATURES DESCRIPTION • The DRV2603 is a haptic driver designed specifically to solve common obstacles in driving both Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements.
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DRV2603 SLOS754A – JUNE 2012 – REVISED JANUARY 2014 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION Part Number Package Symbolization DRV2603RUNR 10-pin, 2 mm x 2 mm x 0.75 mm, RUN 2603 DRV2603RUNT 10-pin, 2 mm x 2 mm x 0.
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DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 THERMAL INFORMATION THERMAL METRIC (1) RUN (10 pins) θJA Junction-to-ambient thermal resistance θJCtop Junction-to-case (top) thermal resistance θJB Junction-to-board thermal resistance 70.4 ψJT Junction-to-top characterization parameter 1.3 ψJB Junction-to-board characterization parameter 70.4 θJCbot Junction-to-case (bottom) thermal resistance n/a (1) UNITS 153.
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DRV2603 SLOS754A – JUNE 2012 – REVISED JANUARY 2014 www.ti.com TYPICAL CHARACTERISTICS EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING Startup Waveform EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING LRA Full-Scale Drive VDD = 3.6 V LRA Mode Full−Scale Input VOUT(P−P) = 2.2 VRMS 0 1m 2m 3m 4m 5m 6m t − Time − s 7m 8m 9m 10m 0 5m 10m 15m 20m 25m 30m t − Time − s 35m 40m Figure 1. Figure 2.
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DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 TYPICAL CHARACTERISTICS (continued) EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING EXTRA LINES FOR SPACING LRA PWM Modulation VDD = 3.6 V LRA Mode PWM Sequence = {100%, 87.5%, 75%, 62.5%, 0%} ERM PWM Modulation VDD = 3.6 V ERM Mode PWM Sequence = {100%, 87.5%, 75%, 62.
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DRV2603 SLOS754A – JUNE 2012 – REVISED JANUARY 2014 www.ti.com TYPICAL CHARACTERISTICS (continued) ALTERNATE TEST SETUP If a digital oscilloscope with digital filtering is not available, a 1st order, low-pass, RC filter network can be used instead. Care must be taken not to use a filter impedance that is too low. This can interfere with the back-EMF behavior of the actuator and corrupt the operation of the auto resonance function. A recommended circuit is shown in Figure 8.
PAGE 7
DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 APPLICATION INFORMATION OPERATION The DRV2603 is a haptic and vibratory driver designed specifically to meet the needs of haptic and vibration applications in the portable market. The DRV2603 has two modes of operation, ERM mode and LRA mode. ERM mode is designed to drive Eccentric Rotating Mass motors, which are generally DC motors of the bar or coin type.
PAGE 8
DRV2603 SLOS754A – JUNE 2012 – REVISED JANUARY 2014 www.ti.com LRA MODE When in LRA mode, the DRV2603 employs a simple control scheme that is designed to be compatible with ERM mode signaling. A 100% input duty cycle gives full vibration strength, and a 0% to 50% input duty cycle gives no vibration strength. The auto resonance detection algorithm takes care of the physical layer signaling and commutation required by linear resonance actuators.
PAGE 9
DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 ECCENTRIC ROTATING MASS MOTORS (ERM) Eccentric Rotating Mass motors, or ERMs, are typically DC-controlled motors of the bar or coin type. ERMs can be driven in the clockwise direction or counter-clockwise depending on the polarity of voltage across its two terminals. Bi-directional drive is made possible in a single-supply system by differential outputs that are capable of sourcing and sinking current.
PAGE 10
DRV2603 SLOS754A – JUNE 2012 – REVISED JANUARY 2014 www.ti.com The full-scale, open-load output voltage of the DRV2603 in ERM mode is 3.6V. The output stage has a total nominal RDS of 1.9 Ω. When driving a 20 Ω ERM at full-scale, the differential voltage seen at the outputs is approximately 3.3 V. When driving a 10 Ω ERM at full-scale, the output voltage is approximately 3.0 V. The voltage seen at the outputs as a function of input duty cycle is given by this equation.
PAGE 11
DRV2603 www.ti.com SLOS754A – JUNE 2012 – REVISED JANUARY 2014 REVISION HISTORY Changes from Original (June 2012) to Revision A • Page Changed from 1 page data sheet to full data sheet in product folder ..................................................................................
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 31-Jan-2014 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 31-Jan-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DRV2603RUNR QFN RUN 10 3000 180.0 8.4 2.3 2.3 1.15 4.0 8.0 Q2 DRV2603RUNT QFN RUN 10 250 180.0 8.4 2.3 2.3 1.15 4.0 8.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 31-Jan-2014 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV2603RUNR QFN RUN 10 3000 210.0 185.0 35.0 DRV2603RUNT QFN RUN 10 250 210.0 185.0 35.
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