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DRV8812

www.ti.com

SLVS997F –OCTOBER 2009–REVISED AUGUST 2013

DUAL-BRIDGE MOTOR CONTROLLER IC

Check for Samples: DRV8812

FEATURES

APPLICATIONS

• Dual-H-Bridge Current-Control Motor Driver

• Automatic Teller Machines

– Capable of Driving a Bipolar Stepper or • Money Handling Machines

Two DC Motors

• Video Security Cameras

– Two-Bit Winding Current Control Allows Up

• Printers

to Four Current Levels

• Scanners

– Low MOSFET On-Resistance

• Office Automation Machines

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

• Gaming Machines

• Built-In 3.3-V Reference Output

• Factory Automation

• Industry-Standard Parallel Digital Control

• Robotics

Interface

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

• Thermally Enhanced HTSSOP and QFN

Surface Mount Packages

DESCRIPTION

The DRV8812 provides an integrated motor driver solution for printers, scanners, and other automated

equipment applications. The device has two H-bridge drivers, and can drive a bipolar stepper motor or two DC

motors. The output driver block for each consists of N-channel power MOSFET’s configured as full H-bridges to

drive the motor windings. The DRV8812 is capable of driving up to 1.6-A of 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.

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

lockout and overtemperature.

The DRV8812 is available in a 28-pin HTSSOP package with PowerPAD™ and in a 28-pin QFN package

PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).

ORDERING INFORMATION

(1)

ORDERABLE PART TOP-SIDE

PACKAGE

(2)

NUMBER MARKING

PowerPAD™ (HTSSOP) - PWP Reel of 2000 DRV8812PWPR

–40°C to 85°C DRV8812

PowerPAD™ (QFN) - RHD Reel of 3000 DRV8812RHDR

(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 (22 pages)

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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 DUAL-BRIDGE MOTOR CONTROLLER IC Check for Samples: DRV8812 FEATURES APPLICATIONS • • • • • • • • • • 1 2 • • • • • Dual-H-Bridge Current-Control Motor Driver – Capable of Driving a Bipolar Stepper or Two DC Motors – Two-Bit Winding Current Control Allows Up to Four Current Levels – Low MOSFET On-Resistance 1.6-A Maximum Drive Current at 24 V, 25°C Built-In 3.
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DRV8812 SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 www.ti.com DEVICE INFORMATION Functional Block Diagram VM VM CP1 Int. VCC Internal 0.01mF LS Gate Reference & Drive Regs V3P3OUT CP2 VM Charge Pump 3.3V VCP 3.3V 0.
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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 Table 1. TERMINAL FUNCTIONS NAME PIN PWP RHD I/O (1) EXTERNAL COMPONENTS OR CONNECTIONS DESCRIPTION POWER AND GROUND GND 14, 28 3, 17 - Device ground VMA 4 7 - Bridge A power supply VMB 11 14 - Bridge B power supply V3P3OUT 15 18 O 3.3-V regulator output CP1 1 4 IO Charge pump flying capacitor CP2 2 5 IO Charge pump flying capacitor VCP 3 6 IO High-side gate drive voltage Connect a 0.
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DRV8812 SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 www.ti.
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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) VMx VREF (1) (2) VALUE UNIT Power supply voltage range –0.3 to 47 V Digital pin voltage range –0.5 to 7 V Input voltage –0.3 to 4 V –0.3 to 0.8 V Peak motor drive output current, t < 1 μS Internally limited A Continuous motor drive output current (3) 1.
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DRV8812 SLVS997F – OCTOBER 2009 – 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 V3P3OUT REGULATOR V3P3 V3P3OUT voltage IOUT = 0 to 1 mA, VM = 24 V, TJ = 25°C 3.18 3.
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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 FUNCTIONAL DESCRIPTION PWM Motor Drivers The DRV8812 contains two H-bridge motor drivers with current-control PWM circuitry. A block diagram of the motor control circuitry is shown in Figure 1. A bipolar stepper motor is shown, but the drivers can also drive two separate DC motors. Figure 1. Motor Control Circuitry Note that there are multiple VM motor power supply pins. All VM pins must be connected together to the motor supply voltage.
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DRV8812 SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 www.ti.com Bridge Control The xPHASE input pins control the direction of current flow through each H-bridge. The xENBL input pins enable the H-bridge outputs when active high. Table 2 shows the logic. Table 2. H-Bridge Logic xENBL xPHASE xOUT1 xOUT2 0 X Z Z 1 1 H L 1 0 L H Current Regulation The current through the motor windings is regulated by a fixed-frequency PWM current regulation, or current chopping.
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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 Decay Mode 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. The current flow direction shown indicates the state when the xENBL pin is high. Once the chopping current threshold is reached, the H-bridge can operate in two different states, fast decay or slow decay.
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DRV8812 SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 www.ti.com Driving nSLEEP low will put the device into a low power sleep state. In this state, the H-bridges are disabled, the gate drive charge pump is stopped, the V3P3OUT regulator is disabled, and all internal clocks are stopped. In this state all inputs are ignored until nSLEEP returns inactive high. When returning from sleep mode, some time (approximately 1 ms) needs to pass before the motor driver becomes fully operational.
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DRV8812 www.ti.com SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013 THERMAL INFORMATION Thermal Protection The DRV8812 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 OPTION ADDENDUM www.ti.com 4-Sep-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2013 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 DRV8812PWPR HTSSOP PWP 28 2000 330.0 16.4 6.9 10.2 1.8 12.0 16.0 Q1 DRV8812RHDR VQFN RHD 28 3000 330.0 DRV8812RHDT VQFN RHD 28 250 180.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 12.4 5.3 5.3 1.5 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 31-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV8812PWPR HTSSOP PWP 28 2000 367.0 367.0 38.0 DRV8812RHDR VQFN RHD 28 3000 367.0 367.0 35.0 DRV8812RHDT VQFN RHD 28 250 210.0 185.0 35.
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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.