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Texas Instruments DRV8843PWPR
- Part No.:
- DRV8843PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DRV8843PWPR.pdf
- Description:
- IC MTR DRVR BIPLR 8.2-45V 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,617
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Product details
Overview
DRV8843PWPR from Texas Instruments is a dual H-bridge motor driver IC designed for precise control of brushed DC or bipolar stepper motors in automated equipment. It delivers up to 2.5-A peak output current per bridge, operates from 8.2 V to 45 V, integrates fixed-frequency PWM current regulation with four programmable current levels (0%, 38%, 71%, 100%), and features real-time fault reporting via open-drain nFAULT. It is used in printer paper feed mechanisms requiring bidirectional torque control and current-limited acceleration.
For engineers reviewing the DRV8843PWPR datasheet, DRV8843PWPR pinout, DRV8843PWPR application, or DRV8843PWPR equivalent, key selection considerations include its dual independent current-control capability, HTSSOP-28 PowerPAD™ thermal package, IN/IN logic interface with internal pulldowns, decay mode selection (slow/fast/mixed), and integrated 3.3-V reference output for microstepping.
Technical Context
The DRV8843PWPR implements two independent N-channel H-bridge power stages with integrated gate drivers, charge pump (CP1/CP2/VCP), and current-sense amplifiers (ISENA/ISENB) referenced to 5× gain. Each bridge supports IN/IN logic control and separate 2-bit current scaling (AI1/AI0, BI1/BI0) tied to external AVREF/BVREF inputs - enabling microstepping when driven by DACs.
It uses fixed-frequency (50 kHz) PWM current chopping with 3.75-μs blanking time, selectable decay mode (DECAY pin), and three-tier protection: overcurrent (3-A trip, independent of sense resistor), thermal shutdown (150–180°C), and undervoltage lockout (8.2 V). Fault status is reported asynchronously on open-drain nFAULT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8.2 V to 45 V - supports 12 V, 24 V, and 36 V industrial motor rails without external regulators. |
| Peak Output Current | 2.5 A per H-bridge - enables driving 24 V/1.5 A DC motors or 1.25 A/phase stepper windings with proper heatsinking. |
| RDS(ON) (HS + LS) | 400 mΩ at 24 V, 25°C - limits conduction loss to ≤2.5 W per bridge at 2.5 A, critical for thermal management in HTSSOP-28. |
| PWM Current Chopping | 50 kHz fixed frequency - ensures smooth torque delivery in stepper applications and avoids audible noise in DC motor control. |
| Current Level Control | Four discrete settings (0%/38%/71%/100%) - allows dynamic current reduction during hold phases to cut power dissipation by >60%. |
| Fault Reporting | Open-drain nFAULT - asserts low on overtemperature, overcurrent, or UVLO, enabling immediate system-level shutdown or retry logic. |
| Sleep Mode Quiescent Current | 10–20 μA - reduces standby power in battery-powered scanners or portable robotics between motion cycles. |
Pinout & Package
DRV8843PWPR is housed in a thermally enhanced HTSSOP-28 package (9.70 mm × 4.40 mm) with exposed PowerPAD™ for PCB-level heat sinking. The package supports ≥1.4°C/W junction-to-board thermal resistance when soldered to ≥1-in² copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (14, 28, PPAD) | Power ground / Thermal pad | Primary return path for motor current and IC bias; PPAD must be soldered to large copper area for thermal compliance. |
| VMA / VMB (4, 11) | Bridge A/B power supply | High-current inputs tied to same 8.2–45 V rail; each requires local 0.1-μF ceramic bypass to GND. |
| AOUT1 / AOUT2 (5, 7) BOUT1 / BOUT2 (10, 8) |
H-bridge outputs | Direct connections to motor windings; support forward/reverse drive and brake (slow decay) or coast (fast decay). |
| AIN1/AIN2, BIN1/BIN2 (21,20,22,23) | Logic control inputs | IN/IN interface with 100-kΩ internal pulldowns - accepts 3.3 V or 5 V logic; enables PWM speed control or direction sequencing. |
| AI0/AI1, BI0/BI1 (24,25,26,27) | Current scale select | 2-bit binary input per bridge - sets winding current to 0%, 38%, 71%, or 100% of full-scale (determined by VREF and RSENSE). |
| AVREF / BVREF (12, 13) | Current reference inputs | Analog voltage inputs (1–3.5 V) scaled by internal 2-bit DAC - enable microstepping when driven by external DACs. |
| DECAY (19) | Decay mode control | Logic low = slow decay (brake); high = fast decay (coast); open = mixed decay (75% fast + 25% slow) - affects torque ripple and heating. |
| nFAULT (18) | Fault status output | Open-drain active-low signal - pulled low during OCP, TSD, or UVLO; requires external pullup to 3.3 V or 5 V. |
| nSLEEP (17) | Sleep mode enable | Active-high input - disables gate drivers, charge pump, and V3P3OUT regulator to reduce quiescent current to ≤20 μA. |
| V3P3OUT (15) | Integrated 3.3-V LDO | Regulated output (3.2–3.4 V @ 1 mA) - powers external logic or serves as AVREF/BVREF source for simplified design. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent H-bridges | Enables simultaneous control of two DC motors or one bipolar stepper - eliminates need for two discrete drivers in space-constrained printers. |
| Programmable current regulation | Four discrete current levels per bridge (via AIx/BIx pins) - allows dynamic torque scaling during acceleration, running, and holding phases. |
| Configurable decay modes | Slow/fast/mixed decay selected by single DECAY pin - optimizes efficiency vs. torque ripple trade-off without firmware changes. |
| Integrated 3.3-V reference | V3P3OUT supplies external DACs or logic - removes need for external LDO in stepper microstepping designs, reducing BOM count. |
| Comprehensive protection suite | OCP (3-A trip), TSD (150°C activation), UVLO (8.2 V threshold), and fault flag - enables robust operation in unattended factory automation systems. |
Applications
| Printer Paper Transport | Scanner Carriage Drive |
|---|---|
|
Use Scenario: Bidirectional paper feeding and registration in inkjet/laser printers with variable load inertia. IC Role / Device Role / Timing Role: Dual H-bridge driver controlling two DC transport rollers - one for pickup, one for registration - with synchronized PWM speed profiles. Use Value: 2.5-A peak current handles stalled-paper conditions; current regulation prevents motor burnout during jams; nFAULT enables automatic retry after jam clearance. |
Use Scenario: Precision linear positioning of optical carriage across document platen with sub-millimeter repeatability. IC Role / Device Role / Timing Role: Bipolar stepper motor driver using microstepping (via AVREF/BVREF + DAC) to achieve 1/8-step resolution at 200 steps/rev. Use Value: Four-level current control reduces holding current by 62% vs. full scale, cutting idle power by >1.5 W; mixed decay minimizes vibration at reversal points. |
| Factory Automation Gripper | Robotic Joint Actuator |
|
Use Scenario: Electromechanical gripper actuation in pick-and-place systems requiring rapid open/close cycles with force limiting. IC Role / Device Role / Timing Role: Single brushed DC motor driver (using Bridge A only) with current-limited acceleration to prevent part slippage or damage. Use Value: Real-time OCP detection (3-A trip) halts motion within 10 μs on pinch events; nSLEEP cuts standby power to <20 μA between cycles. |
Use Scenario: Low-inertia joint actuation in collaborative robots where torque accuracy and thermal safety are critical. IC Role / Device Role / Timing Role: Dual H-bridge driving differential-wound DC motor for bidirectional torque with independent current sensing on both bridges. Use Value: Independent AIx/BIx scaling allows asymmetric current limits (e.g., 2.5 A forward / 1.5 A reverse) for safe human interaction; TSD auto-recovery prevents downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6612FNG | Lower voltage range (2.5–13.5 V), 1.2-A peak per bridge, no integrated charge pump or V3P3OUT. | Suitable for 5 V/12 V small DC motors only; lacks microstepping support and high-voltage compatibility. | Select DRV8843PWPR for 24 V+ systems, stepper control, or designs requiring integrated 3.3 V reference and thermal robustness. |
| DRV8833 | 2.7–10.8 V range, 1.5-A peak, no current regulation, no decay mode control, no nFAULT. | Limited to low-power 3.3 V/5 V applications like toys or simple actuators; no protection visibility or current feedback. | Choose DRV8843PWPR when overtemperature/overcurrent monitoring, programmable decay, or 24 V operation is required. |
Compared with TB6612FNG and DRV8833, the DRV8843PWPR uniquely supports 8.2–45 V operation, integrated current regulation with four discrete levels, mixed/slow/fast decay selection, and real-time fault reporting - making it the only option qualified for industrial 24 V stepper and high-torque DC motor control.
Availability
DRV8843PWPR is available at Aetrix Electronics and suitable for printer paper transport systems, scanner carriage drives, factory automation grippers, robotic joint actuators, and office equipment requiring stable component supply across multi-year production cycles.
Supply support for DRV8843PWPR 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, embedded processing, and power management technologies, with decades of expertise in motor control ICs and industrial-grade reliability.
The DRV8843PWPR belongs to TI's high-voltage motor driver product line, engineered specifically for precision motion control in printers, scanners, and factory automation - emphasizing thermal resilience, current accuracy, and system-level fault visibility.
FAQ
What is the maximum continuous motor current supported by the DRV8843PWPR?
The DRV8843PWPR supports 2.5-A peak output current per H-bridge, with continuous current limited to 1.75 A RMS under 24 V and TA = 25°C with adequate heatsinking. Actual continuous current depends on PCB thermal design - the HTSSOP-28 PowerPAD™ must be soldered to ≥1-in² copper area to sustain 1.75 A continuously. Exceeding this without thermal margin triggers thermal shutdown (TSD) at 150–180°C die temperature.
How does the DRV8843PWPR implement current regulation for stepper motor microstepping?
The DRV8843PWPR enables microstepping by accepting analog reference voltages on AVREF and BVREF pins, which feed internal 2-bit DACs (AI1/AI0 and BI1/BI0) to scale current to 0%, 38%, 71%, or 100% of full scale. With 5× current-sense amplifier gain and external sense resistors, users can generate precise fractional currents - e.g., 1.25 A full scale yields 0.9 A (71%) or 0.475 A (38%) per phase, directly supporting 1/4- or 1/8-step resolution when paired with external sequencers.
Can the DRV8843PWPR drive a single bipolar stepper motor, and how are the bridges configured?
Yes, the DRV8843PWPR is explicitly designed to drive one bipolar stepper motor using both H-bridges: Bridge A controls phase A (AOUT1/AOUT2), Bridge B controls phase B (BOUT1/BOUT2). Each bridge is independently controlled via AIN1/AIN2 and BIN1/BIN2, with current regulation set separately via AIx and BIx pins. This configuration supports full-step, half-step, and microstepping - confirmed in TI's datasheet Section 1 (Features) and Section 2 (Applications).
What protection features does the DRV8843PWPR provide, and how are faults signaled?
The DRV8843PWPR provides overcurrent protection (OCP) with 3-A trip threshold, thermal shutdown (TSD) at 150–180°C, and undervoltage lockout (UVLO) at 8.2 V. All three protections assert the open-drain nFAULT pin low. OCP and TSD cause latched shutdown until nRESET is pulsed or VM is cycled; UVLO releases automatically when VM rises above threshold. No external components are needed - all protection circuitry is fully integrated.
Is the V3P3OUT pin on the DRV8843PWPR regulated, and what load can it drive?
Yes, V3P3OUT is an integrated 3.3-V LDO regulator with output voltage of 3.2–3.4 V across 0–1 mA load current. It is specified to supply up to 1 mA - sufficient to power external logic, microcontroller I/O, or DAC reference inputs. In DRV8843PWPR designs, V3P3OUT is commonly used as the AVREF/BVREF source for stepper current scaling, eliminating an external regulator and simplifying layout.
DRV8843PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Parallel
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 1.75A
- Voltage - Supply:
- 8.2V ~ 45V
- Voltage - Load:
- 8.2V ~ 45V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
DRV8843PWPR FAQ
1.How can I place an order for DRV8843PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8843PWPR 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 DRV8843PWPR reliable?
The price and inventory of DRV8843PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8843PWPR is usually 5 days.
3.What payment methods are accepted for DRV8843PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8843PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8843PWPR?
DRV8843PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8843PWPR 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 DRV8843PWPR?
For technical support, including DRV8843PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8843PWPR requirements.
6.How does Aetrix verify that DRV8843PWPR is sourced from the original manufacturer or authorized distributors?
All DRV8843PWPR 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 DRV8843PWPR meets industry standards.
7.What is the process for return or replacement of DRV8843PWPR?
All DRV8843PWPR units undergo pre-shipment inspection (PSI). If there is an issue with DRV8843PWPR, 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 DRV8843PWPR part is unused and in its original packaging.
Return procedure for DRV8843PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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