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DRV8823

www.ti.com

SLVS913D –JANUARY 2009–REVISED JANUARY 2010

4-BRIDGE SERIAL INTERFACE MOTOR DRIVER

Check for Samples: DRV8823

FEATURES

• Serial Digital Control Interface

• PWM motor Driver with Four H-Bridges

• Fully Protected Against Undervoltage,

Overtemperature, and Overcurrent

– Drives Two Stepper Motors, One Stepper

and Two DC Motors, or Four DC Motors • Thermally Enhanced Surface Mount Package

– Up to 1.5-A Current Per Winding

APPLICATIONS

– Low On-Resistance

• Printers

– Programmable Maximum Winding Current

• Scanners

– Three-Bit Winding Current Control Allows

• Office Automation Machines

up to Eight Current Levels

• Gaming Machines

– Selectable Slow or Mixed Decay Modes

• Factory Automation

• 8-V to 32-V Operating Supply Voltage Range

• Robotics

• Internal Charge Pump for Gate Drive

• Built-in 3.3-V Reference

DESCRIPTION/ORDERING INFORMATION

The DRV8823 provides an integrated motor driver solution for printers and other office automation equipment

applications.

The motor driver circuit includes four H-bridge drivers. Each of the motor driver blocks employ N-channel power

MOSFETs configured as an H-bridge to drive the motor windings.

A simple serial interface allows control of all functions of the motor driver with only a few digital signals. A

low-power sleep function is also provided.

The motor drivers provide PWM current control capability. The current is programmable, based on an externally

supplied reference voltage and an external current sense resistor. In addition, eight current levels (set via the

serial interface) allow microstepping with bipolar stepper motors.

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

lockout and overtemperature.

The DRV8823 is packaged in a 48 pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).

ORDERING INFORMATION

(1)

PACKAGE

(2)

ORDERABLE PART NUMBER TOP-SIDE MARKING

Reel of 2000 DRV8823DCAR

–40°C to 85°C PowerPad™ (HTSSOP) - DCA DRV8823

Tube of 40 DRV8823DCA

(1) For the most current package 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, PowerPAD are trademarks 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 (20 pages)

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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 4-BRIDGE SERIAL INTERFACE MOTOR DRIVER Check for Samples: DRV8823 FEATURES 1 • PWM motor Driver with Four H-Bridges – Drives Two Stepper Motors, One Stepper and Two DC Motors, or Four DC Motors – Up to 1.
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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.com FUNCTIONAL BLOCK DIAGRAM CP1 Dig. VCC V3P3 Charge Pump and Gate Drive Regulator 3.3V Regulator 0.47uF 6.3V CP2 0.01uF 35V +24 VCP VGD 0.
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 TERMINAL FUNCTIONS NAME NO. I/O (1) DESCRIPTION EXTERNAL COMPONENTS OR CONNECTIONS POWER AND GROUND VM (4 pins) 1, 2, 23, 24 - Motor supply voltage (multiple pins) Connect all VM pins together to motor supply voltage. Bypass to GND with several 0.1-mF, 35-V ceramic capacitors. V3P3 16 - 3.3 V regulator output Bypass to GND with 0.47-mF, 6.3-V ceramic capacitor.
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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN VM Motor power supply voltage range IMOT Continuous motor drive output current (1) VREF VREF input voltage (1) NOM 8 MAX UNIT 32 V 1.5 A 4 V TYP MAX UNIT 1 1 Power dissipation and thermal limits must be observed.
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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 FUNCTIONAL DESCRIPTION PWM Motor Drivers The DRV8823 contains four H-bridge motor drivers with current-control PWM circuitry. A block diagram showing drivers A and B of the motor control circuitry (as typically used to drive a bipolar stepper motor) is shown below. Drivers C and D are the same as A and B (though the rds(on) of the output FETs is different).
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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.com Bridge Control The xENBL bits in the serial interface registers enable current flow in each H-bridge when set to "1". The xPHASE bits in the serial interface registers control the direction of current flow through each H-bridge. The following table shows the logic: xPHASE xOUT1 xOUT2 1 H L 0 L H Current Regulation The motor driver employs fixed-frequency PWM current regulation (also called "current chopping").
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 Decay Mode During PWM current chopping, the H-bridge is enabled to drive through the motor winding until the PWM current chopping threshold is reached. This is shown in Figure 3 as case 1. The current flow direction shown indicates positive current flow in the step table below. 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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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.com Protection Circuits The DRV8823 is fully protected against undervoltage, overcurrent and overtemperature events. Overcurrent Protection (OCP) All of the drivers in DRV8823 are protected with an OCP (Over-Current Protection) circuit. The OCP circuit includes an analog current limit circuit, which acts by removing the gate drive form each output FET if the current through it exceeds a preset level.
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 Data Format Table 1. Motor 1 Command (Bridges A & B) D15 D12 Bit Name D11 ADDR BDECAY (= 0000) Reset Value x D10 D9 D8 B12 B11 B10 0 0 0 0 D7 D6 D5 BPHASE BENBL ADECAY 0 0 D4 D3 D2 A12 A11 A10 0 0 0 0 0 0 D1 D0 APHASE AENBL Table 2.
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DRV8823 SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 www.ti.com THERMAL INFORMATION Thermal Protection The DRV8823 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 thermal shutdown is an indication of either excessive power dissipation, insufficient heatsinking, or too high an ambient temperature.
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DRV8823 www.ti.com SLVS913D – JANUARY 2009 – REVISED JANUARY 2010 70 65 Thermal Resistance (RqJA) - °C/W 60 55 50 45 Low-K PCB (2 layer) 40 35 30 High-K PCB (4 layer with ground plane) 25 20 0 10 20 30 40 50 60 70 80 90 2 Backside Copper Area - cm Figure 5. Thermal Resistance vs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device DRV8823DCAR Package Package Pins Type Drawing SPQ HTSSOP 2000 DCA 48 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 24.4 Pack Materials-Page 1 8.6 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 15.8 1.8 12.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV8823DCAR HTSSOP DCA 48 2000 367.0 367.0 45.
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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.