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Texas Instruments DRV8811PWP
- Part No.:
- DRV8811PWP
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DRV8811PWP.pdf
- Description:
- IC MTR DRV BIPLR 3-5.5V 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,180
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Product details
Overview
DRV8811PWP from Texas Instruments is a bipolar stepper motor controller IC integrating dual H-bridge drivers, microstepping indexer logic, and PWM current regulation. It operates from 8 V to 38 V, delivers up to 1.9 A per winding, features 1.0 Ω total (HS+LS) RDS(on), and supports 1/8-step microstepping for precision motion control in office automation and factory equipment.
For engineers reviewing the DRV8811PWP datasheet, DRV8811PWP pinout, DRV8811PWP application, or DRV8811PWP equivalent, key selection considerations include step-and-direction interface compatibility, programmable decay mode (fast/slow/mixed), thermal shutdown behavior, and HTSSOP-28 PowerPAD™ package thermal performance.
Technical Context
The DRV8811PWP implements a fully integrated stepper driver architecture with two independent N-channel H-bridges, internal 8× current-sense amplification, and a state-machine-based microstepping indexer. Its STEP/DIR interface decouples motion control from current-loop management, enabling host MCU offload of phase sequencing and PWM timing.
Current regulation uses external RC networks on RCA/RCB pins to set blanking time (700–1200 ns) and fixed off-time (30–46 μs), while DECAY pin voltage (0.21×VCC to 0.6×VCC) selects fast, slow, or mixed decay modes-critical for torque consistency and audible noise suppression across motor loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8 V to 38 V - supports wide-input industrial and office equipment power rails without external DC-DC pre-regulation |
| Max Output Current | 1.9 A per winding - enables direct drive of NEMA 17–23 stepper motors without external current boost stages |
| Total RDS(on) | 1.0 Ω (HS+LS @ 25°C) - minimizes conduction loss and thermal rise at full-scale current |
| Microstep Resolution | 1/8-step - provides 200 × 8 = 1600 steps/rev positional resolution for smooth low-speed operation |
| Protection Features | UVLO (6.7 V), OCP (2.5–6.5 A), TSD (150°C) - autonomous fault response without host intervention |
| Logic Supply | 3 V to 5.5 V (VCC) - compatible with standard 3.3 V or 5 V microcontrollers |
| Step Frequency | Up to 500 kHz - supports high-speed positioning with minimal step jitter |
Pinout & Package
DRV8811PWP is housed in a thermally enhanced 28-pin HTSSOP (PWP) package measuring 9.70 mm × 4.40 mm, featuring an exposed PowerPAD™ thermal pad soldered to PCB ground for efficient heat dissipation (RθJA = 31.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| STEP (19) | Digital input | Rising-edge-triggered step command - advances indexer state; requires ≥1 μs pulse width |
| DIR (3) | Digital input | Direction control - sets forward/reverse sequence in microstep table |
| AOUT1/AOUT2 (4,25), BOUT1/BOUT2 (11,18) | H-bridge outputs | Drive bipolar stepper windings A and B; polarity defines current direction per step |
| ISENA/ISENB (1,14) | Current sense inputs | Connect to low-side sense resistors - enable 8× amplified current feedback for PWM chopping |
| VREF (8) | Analog reference input | Sets full-scale current: ICHOP = VREF / (8 × RSENSE) - e.g., 3.3 V + 0.22 Ω → 1.875 A |
| DECAY (5) | Analog mode select | Voltage threshold determines decay behavior: <0.21×VCC = fast, >0.6×VCC = slow, mid-range = mixed |
| RCA/RCB (6,9) | Timing network inputs | External R+C sets blanking time (ns) and off-time (μs) - tunes current loop stability per motor inductance |
| HOMEn (2) | Indexer status output | Active-low signal indicating home position (45° state) - used for mechanical homing verification |
| SLEEPn (27) | Power mode control | Logic high enables normal operation; low enters ultra-low-quiescent mode (12–20 μA VM supply) |
| ENABLEn (26) | Output gate control | Logic high disables all H-bridge outputs - retains indexer state but halts motor drive |
| RESETn (17) | Indexer reset | Active-low resets indexer to home state and disables outputs - required after fault recovery |
| VMA/VMB (28,15) | Motor power supplies | Must be tied to same 8–38 V rail - dual-supply topology eliminates cross-conduction risk |
| VCC (10) | Logic supply | 3–5.5 V digital core supply - bypassed with 0.1 μF ceramic capacitor to GND |
| GND (7,21) | Reference plane | Two dedicated ground pins - separate analog/digital return paths reduce noise coupling |
| Thermal Pad | Thermal interface | Exposed copper pad - must be soldered to large PCB ground plane for RθJB = 11.5°C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| PWM microstepping indexer | Hardware-based 1/8-step sequencing eliminates MCU real-time interrupt burden and ensures deterministic step timing |
| Programmable decay modes | Fast/slow/mixed decay selection via DECAY pin voltage enables optimization of torque ripple, efficiency, and acoustic noise per motor type |
| Configurable current regulation | Independent RCA/RCB RC networks allow fine-tuning of blanking time and off-time for optimal current loop response across diverse motor inductances |
| Integrated protection suite | Autonomous UVLO, overcurrent, and thermal shutdown prevent damage during stall, short-circuit, or overheating - no firmware monitoring required |
| PowerPAD™ thermal package | HTSSOP-28 with exposed thermal pad achieves 2.8°C/W junction-to-case (bottom) resistance - sustains 1.9 A continuous current with proper PCB copper area |
Applications
| Printer Paper Feed System | Industrial CNC Axis Controller |
|---|---|
Use Scenario: Precise paper advancement and registration in laser and inkjet printers using NEMA 17 stepper motors. IC Role / Device Role / Timing Role: Stepper motor controller executing 1/8-step microstepping with STEP/DIR commands from printer SoC; manages current decay to minimize vibration-induced misfeeds. Use Value: Enables ±0.1 mm paper positioning accuracy and silent operation below 25 dB(A) via mixed-decay tuning - critical for office environments. | Use Scenario: Closed-loop motion control for X/Y/Z axes in benchtop CNC mills handling aluminum and plastics. IC Role / Device Role / Timing Role: Bipolar stepper driver delivering 1.9 A peak current with thermal shutdown protection; synchronizes step pulses with encoder feedback via external controller. Use Value: Sustains 100% torque at 1000 rpm without external heatsinking - reduces bill-of-materials by eliminating discrete MOSFETs and gate drivers. |
| Automated Document Scanner | Robotic Arm Joint Actuator |
Use Scenario: High-resolution flatbed scanner requiring smooth, jitter-free carriage movement across 300 mm travel range. IC Role / Device Role / Timing Role: Microstepping indexer driving 42 mm stepper motor; uses HOMEn output for automatic mechanical zero calibration at power-up. Use Value: Achieves sub-pixel image alignment via 1/8-step resolution and eliminates resonance peaks through programmable off-time adjustment. | Use Scenario: Low-inertia joint actuation in collaborative robots where precise torque control and fault resilience are mandatory. IC Role / Device Role / Timing Role: Stepper motor controller with overcurrent protection triggered at 4.5 A - prevents gear train damage during collision events. Use Value: Enables safe human-robot interaction by autonomously disabling outputs within 5 μs of fault detection - meets ISO/TS 15066 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8818PWP | Pin-to-pin compatible; higher 2.5-A rating and improved thermal metrics (RθJA = 27.5°C/W) | Preferred for continuous 2.0-A loads or ambient >70°C; identical STEP/DIR interface and register map | Select when higher current headroom or extended temperature operation is required - no layout changes needed |
| TMC2209-VQ | Integrated UART interface, stealthChop2 quiet stepping, lower 1.4-A rating, QFN-32 package | Targets ultra-low-noise applications (e.g., 3D printers); lacks HOMEn and SLEEPn pins; requires SPI configuration | Choose for acoustic-sensitive environments where silent operation outweighs pin compatibility - requires new PCB layout |
Compared with DRV8811PWP, DRV8818PWP offers higher current capability and better thermal performance in the same footprint, while TMC2209-VQ trades pin compatibility for advanced noise suppression and digital configurability - making DRV8811PWP optimal for cost-sensitive, drop-in stepper upgrades in existing HTSSOP-28 designs.
Availability
DRV8811PWP is available at Aetrix Electronics and suitable for printer paper feed systems, industrial CNC axis controllers, automated document scanners, and robotic arm joint actuators requiring stable component supply and long-term production continuity.
Supply support for DRV8811PWP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in motor control IC design and high-reliability power management solutions.
The DRV8811PWP belongs to TI's integrated stepper motor driver product line, engineered for cost-effective, thermally robust motion control in office automation, factory equipment, and precision instrumentation - emphasizing ease of use via STEP/DIR interface and hardware-based microstepping.
FAQ
What is the maximum continuous output current supported by the DRV8811PWP?
The DRV8811PWP supports up to 1.9 A per winding continuously under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). This rating assumes use of the exposed PowerPAD™ thermal pad soldered to a ≥4 cm² copper area and operation within the 8 V to 38 V supply range. Peak current capability is internally limited to 4.5 A for overcurrent protection triggering, but sustained operation above 1.9 A requires derating based on ambient temperature and heatsinking.
How does the DRV8811PWP implement microstepping without external microcontroller intervention?
DRV8811PWP integrates a dedicated hardware indexer that sequences motor phases based on STEP and DIR inputs - eliminating the need for the host MCU to generate PWM waveforms or manage current profiles. The USM0/USM1 pins configure resolution (full/half/quarter/eighth-step), while the internal DAC scales VREF to achieve fractional current levels per microstep. This allows the DRV8811PWP to execute precise 1/8-step motion using only two GPIO lines from a low-end microcontroller.
Can the DRV8811PWP drive unipolar stepper motors?
No, the DRV8811PWP is designed exclusively for bipolar stepper motors with center-tapped or dual-winding configurations. Its dual H-bridge architecture requires four terminals (AOUT1/AOUT2 and BOUT1/BOUT2) to reverse current direction in each winding - a topology incompatible with standard 5- or 6-wire unipolar motors. Attempting to connect a unipolar motor may result in improper commutation, reduced torque, or device malfunction. For unipolar applications, consider dedicated unipolar drivers such as the ULN2003A.
What is the function of the HOMEn pin on the DRV8811PWP, and how is it used in system design?
The HOMEn pin on DRV8811PWP is an open-drain output that asserts logic low only when the internal indexer is in the home state (45° position in the microstep table), which occurs at power-up or after RESETn activation. System designers use this signal to verify mechanical homing - for example, by coupling it with a limit switch to calibrate absolute position. Unlike encoder-based homing, HOMEn provides deterministic electrical alignment without additional sensors, reducing BOM cost in printers and scanners where repeatable start position is essential.
Does the DRV8811PWP require external components for basic operation, and which ones are mandatory?
Yes, the DRV8811PWP requires several external components for reliable operation: (1) A 0.22-μF ceramic capacitor between CP1 and CP2 for charge pump operation; (2) 0.1-μF bypass capacitors on VCC and VGD; (3) Current sense resistors (e.g., 0.22 Ω) connected to ISENA/ISENB; (4) RC networks on RCA/RCB pins to set blanking time and off-time; and (5) a solid thermal connection from the PowerPAD™ to PCB ground. Omitting any of these compromises current regulation accuracy, gate drive stability, or thermal safety - particularly the thermal pad, which is mandatory to sustain 1.9-A operation.
DRV8811PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Logic
- Technology:
- Power MOSFET
- Step Resolution:
- 1, 1/2, 1/4, 1/8
- Applications:
- General Purpose
- Current - Output:
- 1.9A
- Voltage - Supply:
- 3V ~ 5.5V
- Voltage - Load:
- 8V ~ 38V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
DRV8811PWP FAQ
1.How can I place an order for DRV8811PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8811PWP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DRV8811PWP reliable?
The price and inventory of DRV8811PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8811PWP is usually 5 days.
3.What payment methods are accepted for DRV8811PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8811PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8811PWP?
DRV8811PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8811PWP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DRV8811PWP?
For technical support, including DRV8811PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8811PWP requirements.
6.How does Aetrix verify that DRV8811PWP is sourced from the original manufacturer or authorized distributors?
All DRV8811PWP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DRV8811PWP meets industry standards.
7.What is the process for return or replacement of DRV8811PWP?
All DRV8811PWP units undergo pre-shipment inspection (PSI). If there is an issue with DRV8811PWP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DRV8811PWP part is unused and in its original packaging.
Return procedure for DRV8811PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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