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Texas Instruments DRV8841PWPR
- Part No.:
- DRV8841PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DRV8841PWPR.pdf
- Description:
- IC MTR DRVR BIPLR 8.2-45V 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
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Product details
Overview
DRV8841PWPR from Texas Instruments is a dual H-bridge motor driver IC designed for precise control of two brushed DC motors or one bipolar stepper motor in automated equipment. It delivers up to 2.5 A peak output per bridge at 24 V, features integrated current regulation with four programmable levels (0%, 38%, 71%, 100%), supports fast/slow/mixed decay modes via the DECAY pin, and includes real-time fault reporting via open-drain nFAULT. It is used in office automation machines requiring synchronized bidirectional motion and current-limited microstepping.
For engineers reviewing the DRV8841PWPR datasheet, DRV8841PWPR pinout, DRV8841PWPR application, or DRV8841PWPR equivalent, key selection considerations include its 8.2–45 V operating range, dual independent current-control DACs (AI1/AI0 and BI1/BI0), thermally enhanced HTSSOP-28 package with PowerPAD, integrated 3.3-V reference (V3P3OUT), and overcurrent/thermal/undervoltage protection with fault flagging.
Technical Context
The DRV8841PWPR integrates two independent N-channel H-bridge power stages with gate charge pump (CP1/CP2/VCP), each supporting PWM-controlled current regulation using a fixed-frequency chopping scheme with 3.75 µs blanking time. Current threshold is set by external sense resistors (ISENA/ISENB) and scaled by 5× gain amplifiers referenced to AVREF/BVREF inputs.
Its digital interface includes dedicated decay mode selection (DECAY), sleep control (nSLEEP), reset (nRESET), and fault indication (nFAULT). Internal logic uses pulldown/pullup resistors on all control pins (e.g., 100 kΩ pulldown on AI0/AI1, 130 kΩ pullup + 80 kΩ pulldown on DECAY), enabling robust operation without external biasing in most configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8.2 V to 45 V - supports wide-input industrial and office equipment power rails without external regulators |
| Peak Output Current | 2.5 A per H-bridge - enables direct driving of medium-power DC motors or stepper windings without external current boosting |
| RDS(ON) (HS+LS) | 400 mΩ at 24 V, 25°C - minimizes conduction loss and thermal rise under full-load conditions |
| Current Regulation | Four discrete levels (0%/38%/71%/100%) set by AI1/AI0 and BI1/BI0 - allows microstepping resolution and dynamic torque scaling |
| Fault Reporting | Open-drain nFAULT pin - asserts low on overtemperature, overcurrent, or undervoltage, enabling system-level error handling |
| Sleep Mode Current | 10–20 µA - reduces standby power in battery-backed or energy-sensitive applications |
| Reference Output | 3.3 V ±3% at ≤1 mA (V3P3OUT) - powers external DACs or logic, eliminating need for separate LDO |
Pinout & Package
DRV8841PWPR is housed in a thermally enhanced 28-pin HTSSOP package (9.70 mm × 4.40 mm) with exposed PowerPAD (PPAD) for improved heat dissipation. The package is RoHS-compliant and designed for surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VMA / VMB | Bridge A/B motor supply input | Must be connected to same 8.2–45 V rail; bypassed individually with 0.1-µF ceramic capacitors to GND |
| AOUT1 / AOUT2 / BOUT1 / BOUT2 | H-bridge output terminals | Direct connection points to motor windings; support bidirectional drive and braking via decay mode selection |
| ISENA / ISENB | Bridge A/B current sense return | Connect to low-side current sense resistor; internal 5× gain amplifier converts sense voltage to trip threshold |
| AI0 / AI1 / BI0 / BI1 | Bridge A/B current level select | Two-bit binary input (with internal 100 kΩ pulldown) sets 0%/38%/71%/100% full-scale current per bridge |
| DECAY | Decay mode control | Logic low = slow decay (brake), open = mixed decay (fast→slow), high = fast decay (coast); controls both bridges simultaneously |
| nFAULT | Fault status indicator | Open-drain output pulled low during overtemperature, overcurrent, or UVLO; requires external pullup for logic-level interfacing |
| nSLEEP | Low-power mode enable | Logic high = active operation; logic low = disables H-bridges, charge pump, V3P3OUT, and clocks; internal 100 kΩ pulldown |
| V3P3OUT | Integrated 3.3-V regulator output | Stable reference for AVREF/BVREF or external logic; load limited to 1 mA; eliminates need for external LDO in many designs |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent current regulation | Separate 2-bit DACs (AI1/AI0 and BI1/BI0) allow asymmetric current settings for stepper half-step or dual-motor torque balancing |
| Mixed decay mode | Automatically transitions from fast decay to slow decay at 75% of PWM cycle - reduces audible noise and improves current regulation stability |
| Integrated charge pump | Generates gate drive voltage (VCP) from VM supply - enables full N-channel H-bridge operation without external high-side drivers |
| Thermal shutdown with auto-recovery | Triggers at 150–160°C die temperature and resumes operation once junction cools - prevents permanent damage during transient overload |
| Programmable blanking time | Fixed 3.75 µs delay after H-bridge enable before current sensing activates - avoids false OCP trips due to switching transients |
Applications
| Printers | Scanners |
|---|---|
Use Scenario: Bidirectional paper feed and carriage positioning in inkjet/laser printers. IC Role / Device Role / Timing Role: Dual H-bridge driver controlling two DC motors - one for paper transport, one for printhead carriage - with synchronized PWM timing and current limiting. Use Value: Prevents motor stall-induced current spikes during paper jams via OCP and enables precise microstepping-like positioning using 4-level current control. | Use Scenario: Linear motion control of scanning head and document feeder in flatbed and ADF scanners. IC Role / Device Role / Timing Role: Single-chip solution driving both scanner motor and feeder motor with independent decay mode selection per bridge. Use Value: Mixed decay mode reduces mechanical vibration and acoustic noise during high-speed scan passes while maintaining positional accuracy. |
| Office Automation Machines | Robotics |
Use Scenario: Actuation of staplers, hole punchers, and document sorters in multifunction devices. IC Role / Device Role / Timing Role: H-bridge driver delivering short-duration, high-torque pulses to solenoid-like loads with controlled current ramp-up. Use Value: Adjustable current levels (38%/71%/100%) allow tuning of actuator force without hardware changes; nFAULT provides immediate feedback on mechanical binding. | Use Scenario: Low-cost bipedal or wheeled robot joint control using small bipolar stepper motors. IC Role / Device Role / Timing Role: Stepper driver implementing microstepping via external DAC + AVREF/BVREF, with real-time thermal monitoring. Use Value: Integrated 3.3-V reference (V3P3OUT) powers external DACs; thermal shutdown prevents motor coil overheating during stalled conditions. |
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 max voltage (13.5 V), lower peak current (1.2 A), no integrated charge pump - requires external bootstrap circuitry for N-FET bridges | Better suited for low-voltage battery-powered robots; lacks programmable decay modes and current DACs | Select when cost and board space are critical and supply voltage stays below 13.5 V |
| DRV8833 | Max 11-V supply, 1.5-A peak, no V3P3OUT, no mixed decay - simpler control interface but fewer configuration options | Ideal for compact consumer electronics with single low-voltage motor; lacks thermal shutdown auto-recovery | Choose for space-constrained USB-powered devices where 45-V operation and advanced current control are unnecessary |
Compared with TB6612FNG and DRV8833, the DRV8841PWPR offers wider voltage range, higher current capability, integrated charge pump, programmable decay modes, and autonomous thermal recovery - making it optimal for industrial-grade office automation and stepper-based motion systems requiring robustness and configurability.
Availability
DRV8841PWPR is available at Aetrix Electronics and suitable for printers, scanners, and office automation machines requiring stable component supply across extended production lifecycles and varying ambient temperatures.
Supply support for DRV8841PWPR 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 connectivity technologies with decades of motor control IP investment.
The DRV8841PWPR belongs to TI's high-performance motor driver product line, engineered specifically for precision motion control in automated office equipment and factory automation systems where reliability, thermal resilience, and flexible current regulation are essential.
FAQ
What is the maximum continuous motor current supported by the DRV8841PWPR?
The DRV8841PWPR supports up to 2.5 A peak output current per H-bridge at 24 V and 25°C ambient, with a recommended continuous RMS current of 1.75 A per bridge when properly heatsinked. Derating is required above 25°C per the RθJA = 31.6°C/W thermal metric; actual continuous current depends on PCB copper area, airflow, and ambient temperature.
How does the DRV8841PWPR implement current regulation for stepper motor microstepping?
The DRV8841PWPR enables microstepping by accepting analog reference voltages (AVREF/BVREF) and applying them to internal 2-bit DACs (AI1/AI0 and BI1/BI0) that scale full-scale current to 0%, 38%, 71%, or 100%. Combined with external DACs driving AVREF/BVREF, this allows fine-grained current control per winding - a prerequisite for true microstepping - while the 5× current-sense amplifier ensures accurate trip thresholds.
Can the DRV8841PWPR operate without external current sense resistors?
Yes - the DRV8841PWPR can disable current regulation by connecting ISENA/ISENB directly to GND and AVREF/BVREF to V3P3OUT. In this mode, the device functions as a basic dual H-bridge with PWM speed control only, retaining all protection features (OCP, TSD, UVLO) but bypassing closed-loop current chopping.
What is the role of the DECAY pin on the DRV8841PWPR, and how does mixed decay work?
The DECAY pin on the DRV8841PWPR selects decay mode for both H-bridges: low = slow decay (braking), high = fast decay (coasting), open = mixed decay. In mixed decay, the device starts with fast decay for 75% of the PWM cycle then switches to slow decay for the remainder - reducing audible noise and improving current waveform fidelity compared to pure fast or slow decay.
Does the DRV8841PWPR require external components for gate drive, and what are the mandatory ones?
Yes - the DRV8841PWPR requires external charge pump capacitors: a 0.01-µF capacitor between CP1 and CP2, and a 0.1-µF ceramic capacitor from VCP to VM (with optional 1-MΩ resistor). Additionally, 0.1-µF bypass capacitors are mandatory at VMA and VMB, and bulk capacitance must be added per application requirements. No external bootstrap diodes or high-side drivers are needed due to the integrated charge pump.
DRV8841PWPR 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
DRV8841PWPR FAQ
1.How can I place an order for DRV8841PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8841PWPR 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 DRV8841PWPR reliable?
The price and inventory of DRV8841PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8841PWPR is usually 5 days.
3.What payment methods are accepted for DRV8841PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8841PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8841PWPR?
DRV8841PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8841PWPR 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 DRV8841PWPR?
For technical support, including DRV8841PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8841PWPR requirements.
6.How does Aetrix verify that DRV8841PWPR is sourced from the original manufacturer or authorized distributors?
All DRV8841PWPR 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 DRV8841PWPR meets industry standards.
7.What is the process for return or replacement of DRV8841PWPR?
All DRV8841PWPR units undergo pre-shipment inspection (PSI). If there is an issue with DRV8841PWPR, 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 DRV8841PWPR part is unused and in its original packaging.
Return procedure for DRV8841PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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