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DRV8840

www.ti.com

SLVSAB7C –MAY 2010–REVISED AUGUST 2013

DC MOTOR DRIVER IC

Check for Samples: DRV8840

FEATURES

• 8.2-V to 45-V Operating Supply Voltage Range

• Thermally Enhanced Surface Mount Package

• Single H-Bridge Current-Control Motor Driver

– Drives One DC Motor

APPLICATIONS

– Brake Mode

• Printers

– Five-Bit Winding Current Control Allows Up

• Scanners

to 32 Current Levels

• Office Automation Machines

– Low MOSFET On-Resistance

• Gaming Machines

• 5-A Maximum Drive Current at 24 V, 25°C

• Factory Automation

• Built-In 3.3-V Reference Output

• Robotics

• Industry-Standard Parallel Digital Control

Interface

DESCRIPTION

The DRV8840 provides an integrated motor driver solution for printers, scanners, and other automated

equipment applications. The device has one H-bridge driver, and is intended to drive one DC motor. The output

driver block for each consists of N-channel power MOSFET’s configured as full H-bridges to drive the motor

windings. The DRV8840 can supply up to 5-A peak or 3.5-A output current (with proper heatsinking at 24 V and

25°C).

A simple parallel digital control interface is compatible with industry-standard devices. Decay mode is

programmable to allow braking or coasting of the motor when disabled.

Internal shutdown functions are provided for over current protection, short circuit protection, under voltage

lockout and overtemperature.

TheDRV8840 is available in a 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).

ORDERING INFORMATION

(1)

ORDERABLE PART TOP-SIDE

PACKAGE

(2)

NUMBER MARKING

–40°C to 85°C PowerPAD™ (HTSSOP) - PWP Reel of 2000 DRV8840PWPR 8840

(1) For the most current packaging and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

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.

2PowerPAD is a trademark of Texas Instruments.

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)

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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 DC MOTOR DRIVER IC Check for Samples: DRV8840 FEATURES 1 • 2 • • • Single H-Bridge Current-Control Motor Driver – Drives One DC Motor – Brake Mode – Five-Bit Winding Current Control Allows Up to 32 Current Levels – Low MOSFET On-Resistance 5-A Maximum Drive Current at 24 V, 25°C Built-In 3.3-V Reference Output Industry-Standard Parallel Digital Control Interface • • 8.
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DRV8840 SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 www.ti.com DEVICE INFORMATION Functional Block Diagram VM VM Internal Reference & Regs Int. VCC CP1 LS Gate Drive 0.01mF CP2 VM Charge Pump V3P3OUT 3.3V VCP 0.1mF 3.
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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 Table 1. TERMINAL FUNCTIONS NAME PIN I/O (1) EXTERNAL COMPONENTS OR CONNECTIONS DESCRIPTION POWER AND GROUND GND 14, 28 - Device ground VM 4, 11 - Bridge A power supply Connect to motor supply (8.2 - 45 V). Both pins must be connected to same supply. V3P3OUT 15 O 3.3-V regulator output Bypass to GND with a 0.47-μF, 6.3-V ceramic capacitor. Can be used to supply VREF.
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DRV8840 SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 www.ti.com PWP PACKAGE (TOP VIEW) CP1 CP2 VCP VM OUT1 ISEN OUT2 OUT2 ISEN OUT1 VM VREF VREF GND 1 2 3 28 27 26 4 25 5 24 6 7 8 23 GND (PPAD) 22 21 9 20 10 19 11 18 12 13 17 16 14 15 GND I4 I3 I2 I1 I0 NC ENBL PHASE DECAY nFAULT nSLEEP nRESET V3P3OUT ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) VMx VREF (1) (2) VALUE UNIT Power supply voltage range –0.
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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 THERMAL INFORMATION DRV8840 THERMAL METRIC (1) PWP UNITS 28 PINS Junction-to-ambient thermal resistance (2) θJA 31.6 (3) θJCtop Junction-to-case (top) thermal resistance θJB Junction-to-board thermal resistance (4) 5.6 ψJT Junction-to-top characterization parameter (5) 0.2 ψJB Junction-to-board characterization parameter (6) 5.5 θJCbot Junction-to-case (bottom) thermal resistance (7) 1.4 (1) (2) (3) (4) (5) (6) (7) 15.
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DRV8840 SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT POWER SUPPLIES IVM VM operating supply current VM = 24 V, fPWM < 50 kHz 5 8 mA IVMQ VM sleep mode supply current VM = 24 V 10 20 μA VUVLO VM undervoltage lockout voltage VM rising 7.8 8.2 V 3.3 3.4 V V3P3OUT REGULATOR V3P3 V3P3OUT voltage IOUT = 0 to 1 mA 3.
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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 FUNCTIONAL DESCRIPTION PWM Motor Driver The DRV8840 contains one H-bridge motor driver with current-control PWM circuitry. A block diagram of the motor control circuitry is shown in Figure 1. VM OCP VM VCP, VGD OUT1 Predrive DCM OUT2 ENBL PHASE PWM DECAY OCP ISEN + I[4:0] A =5 DAC 5 VREF Figure 1. Motor Control Circuitry Note that there are multiple VM, ISEN, OUT, and VREF pins.
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DRV8840 SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 www.ti.com Current Regulation The maximum current through the motor winding is regulated by a fixed-frequency PWM current regulation, or current chopping. When the H-bridge is enabled, current rises through the winding at a rate dependent on the DC voltage and inductance of the winding. Once the current hits the current chopping threshold, the bridge disables the current until the beginning of the next PWM cycle.
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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 Table 3. Pin Functions (continued) I[4..0] RELATIVE CURRENT (% FULL-SCALE CHOPPING CURRENT) 0x17h 90% 0x18h 92% 0x19h 94% 0x1Ah 96% 0x1Bh 97% 0x1Ch 98% 0x1Dh 99% 0x1Eh 100% 0x1Fh 100% Decay Mode and Braking During PWM current chopping, the H-bridge is enabled to drive current through the motor winding until the PWM current chopping threshold is reached. This is shown in Figure 2 as case 1.
PAGE 10
DRV8840 SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 www.ti.com The DRV8840 supports fast decay and slow decay mode. Slow or fast decay mode is selected by the state of the DECAY pin - logic low selects slow decay, and logic high sets fast decay mode. The DECAY pin has both an internal pullup resistor of approximately 130 kΩ and an internal pulldown resistor of approximately 80 kΩ. This sets the mixed decay mode if the pin is left open or undriven.
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DRV8840 www.ti.com SLVSAB7C – MAY 2010 – REVISED AUGUST 2013 THERMAL INFORMATION Thermal Protection The DRV8840 has thermal shutdown (TSD) as described above. If the die temperature exceeds approximately 150°C, the device will be disabled until the temperature drops to a safe level. Any tendency of the device to enter TSD is an indication of either excessive power dissipation, insufficient heatsinking, or too high an ambient temperature.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device DRV8840PWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 28 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 16.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.2 1.8 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 13-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV8840PWPR HTSSOP PWP 28 2000 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.