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Texas Instruments DRV8426PRGER
- Part No.:
- DRV8426PRGER
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
DRV8426PRGER.pdf
- Description:
- 35V, 1.5A BIPOLAR STEPPER OR DUA
- Quantity:
- Payment:
- Shipping:
Inventory:2,987
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Product details
Overview
DRV8426PRGER from Texas Instruments is a dual H-bridge motor driver IC designed for precise bipolar stepper and brushed-DC motor control in space-constrained industrial systems. It delivers 1.5-A full-scale stepper current or 2.5-A peak brushed-DC current, operates from 4.5 V to 33 V, integrates current sensing with ±5% accuracy, and supports PHASE/ENABLE and PWM control interfaces.
For engineers reviewing the DRV8426PRGER datasheet, DRV8426PRGER pinout, DRV8426PRGER application, or DRV8426PRGER equivalent, key selection criteria include integrated current sense architecture eliminating external shunts, quad-level decay mode configuration (Smart Tune Dynamic/Ripple, mixed, fast), 24-pin VQFN package with exposed thermal pad, and compatibility with TI's DRV8424/8436/8434 families for design reuse.
Technical Context
The DRV8426PRGER integrates two N-channel H-bridges with internal current mirror sensing-replacing external shunt resistors-and a charge pump for high-side gate drive. Its Smart Tune technology dynamically adjusts decay behavior per PWM cycle based on winding impedance, supply voltage, and load dynamics.
It supports four configurable off-times (7/16/24/32 μs) via TOFF pin and offers independent decay mode selection per bridge using ADECAY/BDECAY pins. Protection includes VM UVLO (4.25 V), charge pump UVLO, overcurrent (2.5 A), and thermal shutdown (150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 33 V - Enables direct integration with 12 V/24 V industrial power rails without external regulation. |
| Full-Scale Stepper Current | 1.5 A - Sets maximum continuous winding current for microstepping precision in bipolar stepper applications. |
| Peak Brushed-DC Current | 2.5 A - Supports transient torque demands in dual brushed-DC motor configurations. |
| RDS(ON) (HS + LS) | 900 mΩ at 24 V, 25°C - Determines conduction loss and thermal rise under load; impacts PCB copper area requirements. |
| Current Sense Accuracy | ±5% full-scale - Eliminates need for external sense resistors while maintaining closed-loop current regulation fidelity. |
| Sleep Current | 2 µA - Enables ultra-low-power standby in battery-backed or energy-sensitive motion systems. |
| Logic Input Compatibility | 1.8 V / 3.3 V / 5.0 V - Allows direct interfacing with MCU GPIOs across multiple voltage domains without level shifters. |
Pinout & Package
VQFN-24 package (4.0 mm × 4.0 mm) with exposed thermal pad; RoHS-compliant, moisture-sensitive level 2a per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUT1, AOUT2 | H-bridge A motor outputs | Connect directly to one stepper winding or brushed-DC motor terminals; rated for 2.5-A peak current. |
| BOUT1, BOUT2 | H-bridge B motor outputs | Drive second motor winding or independent brushed-DC load; electrically isolated from A-side outputs. |
| APH, AEN / BIN1, BIN2 | Bridge A PH/EN or Bridge B PWM inputs | DRV8426PRGER uses PH/EN interface (not PWM); AEN enables bridge A; APH controls direction; internal pulldowns simplify MCU interface. |
| VREFA, VREFB | Current regulation reference inputs | Set full-scale chopping current via external voltage (0.05–3.3 V); transimpedance gain = 2.2 V/A determines IREG = VREF/2.2. |
| nFAULT | Open-drain fault indicator | Pulled low on UVLO, OCP, OTSD, or CPUV; requires external pullup; clears on nSLEEP low pulse. |
| nSLEEP | Low-power enable input | Logic high activates device; logic low reduces supply current to 2 µA; internal pulldown ensures safe default state. |
| TOFF, ADECAY, BDECAY | Quad-level configuration pins | Resistor-tied or direct-connected pins selecting off-time (7/16/24/32 μs) and decay mode (Smart Tune Dynamic/Ripple, mixed, fast) per bridge. |
| VM, PGND, GND | Power and ground terminals | VM (4.5–33 V) powers motor stage; PGND handles high-current return; GND is logic ground-separate routing recommended. |
| VCP, CPH, CPL | Charge pump nodes | VCP supplies high-side gate drive; CPH/CPL require 0.022-μF ceramic flying capacitor; VCP-to-VM needs 0.22-μF ceramic storage cap. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sense | Replaces two external shunt resistors; saves >12 mm² board area and eliminates 1–2 W of sense resistor power loss. |
| Smart Tune Dynamic Decay | Automatically optimizes fast/slow decay ratio each PWM cycle to minimize current ripple without manual tuning. |
| Inrush current limiting | Prevents voltage droop and MOSFET stress during brushed-DC motor startup by controlling initial slew rate. |
| Spread spectrum clocking | Reduces EMI peak amplitude by modulating internal oscillator frequency-critical for EMC-compliant industrial designs. |
| Configurable off-time PWM | Four discrete tOFF options (7/16/24/32 μs) allow trade-off between current ripple, efficiency, and audible noise in stepper applications. |
Applications
| Printers and Scanners | ATMs and Currency Counters |
|---|---|
Use Scenario: Bidirectional paper feed and scanner carriage positioning with microstepping resolution. IC Role / Device Role / Timing Role: Dual H-bridge driver controlling one bipolar stepper (carriage) and one brushed-DC motor (paper feed) simultaneously. Use Value: Integrated current sense enables closed-loop stall detection without added components; Smart Tune Dynamic Decay suppresses vibration-induced missteps at high speed. | Use Scenario: Precise banknote transport, stacking, and validation actuation in compact cash-handling modules. IC Role / Device Role / Timing Role: Drives two independent brushed-DC motors-one for note separation, one for stacker advancement-with coordinated start/stop timing. Use Value: 2.5-A peak current supports rapid acceleration of high-inertia rollers; low 2-µA sleep current extends battery life in portable ATMs. |
| Factory Automation Robotics | Vacuum and Toy Robotics |
Use Scenario: Joint actuation in collaborative robotic arms requiring smooth torque delivery and thermal resilience. IC Role / Device Role / Timing Role: Controls dual-axis stepper motors (shoulder/elbow) with real-time current regulation and thermal fault reporting. Use Value: 150°C thermal shutdown and VM UVLO prevent damage during extended duty cycles; RDS(ON) = 900 mΩ limits junction temperature rise on 4×4 mm QFN. | Use Scenario: Compact vacuum cleaner brush roll and suction fan control in consumer-grade cordless units. IC Role / Device Role / Timing Role: Powers one brushed-DC motor (brush roll) and one small stepper (fan baffle) from shared 24-V battery pack. Use Value: Spread spectrum clocking meets Class B EMC limits; PH/EN interface simplifies firmware control on low-cost MCUs with limited PWM resources. |
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 |
|---|---|---|---|
| DRV8424PRGER | Lower RDS(ON) (330 mΩ HS+LS), same 33-V max, identical pinout and feature set. | Better suited for high-efficiency, thermally constrained 24-V brushed-DC applications needing <1-A RMS current. | Select DRV8424PRGER when lower conduction loss and reduced thermal footprint outweigh cost sensitivity. |
| DRV8436PRGER | Higher voltage rating (48 V), same RDS(ON) (900 mΩ), identical pinout and Smart Tune features. | Required for 36–48-V industrial platforms where 33-V headroom is insufficient. | Choose DRV8436PRGER for future-proofing in 48-V battery-powered robotics or factory equipment upgrades. |
Compared with DRV8424PRGER and DRV8436PRGER, the DRV8426PRGER balances voltage range (4.5–33 V), thermal performance (RDS(ON) = 900 mΩ), and cost-making it optimal for mainstream 12/24-V industrial motion where 48-V capability or sub-500-mΩ RDS(ON) are unnecessary.
Availability
DRV8426PRGER is available at Aetrix Electronics and suitable for printers and scanners, ATMs and currency counters, and factory automation robotics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DRV8426PRGER 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The DRV8426PRGER belongs to TI's high-performance motor driver product line, engineered for industrial motion control applications demanding integrated current sensing, intelligent decay management, and robust protection in compact packages.
FAQ
What motor types does the DRV8426PRGER support?
The DRV8426PRGER supports one bipolar stepper motor or two independent brushed-DC motors. It can also drive four unidirectional brushed-DC motors using half-bridge mode per output pair. The DRV8426PRGER achieves this through two fully independent N-channel H-bridges with integrated current regulation and Smart Tune decay control-enabling precise torque and position control without external sense resistors.
How does the integrated current sense work in the DRV8426PRGER?
The DRV8426PRGER uses an internal current mirror architecture that senses motor current through the power MOSFETs themselves, eliminating external shunt resistors. Voltage applied to VREFA/VREFB (0.05–3.3 V) sets the full-scale current threshold via transimpedance gain of 2.2 V/A, yielding ±5% accuracy. This design reduces board area, BOM cost, and power loss-key advantages confirmed in the DRV8426PRGER datasheet Section 7.3.3.
What decay modes are available on the DRV8426PRGER and how are they selected?
The DRV8426PRGER offers Smart Tune Dynamic Decay, Smart Tune Ripple Control, mixed decay (30% fast), and fast decay-selected independently per bridge via ADECAY and BDECAY pins. These are quad-level inputs: grounded (0), tied to DVDD (1), Hi-Z, or pulled to GND via 330-kΩ resistor. Smart Tune modes auto-optimize decay behavior each PWM cycle; mixed and fast modes provide deterministic timing. All modes are documented in DRV8426PRGER datasheet Table 7-5.
What is the purpose of the TOFF pin on the DRV8426PRGER?
The TOFF pin on the DRV8426PRGER configures the PWM off-time during current chopping for all decay modes except Smart Tune Ripple Control. It accepts four quad-level states-ground (7 μs), DVDD (16 μs), Hi-Z (24 μs), or 330-kΩ-to-GND (32 μs)-allowing precise adjustment of current ripple, efficiency, and acoustic noise. The setting takes effect after a 10-μs deglitch time, as specified in DRV8426PRGER datasheet Section 7.3.4.
Does the DRV8426PRGER support 1.8-V logic inputs?
Yes, the DRV8426PRGER supports 1.8-V, 3.3-V, and 5.0-V logic inputs on all control pins (APH, AEN, nSLEEP, etc.), with VIH(min) = 1.5 V and VIL(max) = 0.6 V across temperature. This allows direct interfacing with low-voltage MCUs without level-shifting circuitry. Input hysteresis of 150 mV ensures noise immunity, and leakage current remains below ±1 μA-verified in DRV8426PRGER Electrical Characteristics Table 6.5.
DRV8426PRGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- 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 (2)
- Interface:
- PWM
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 1.5A
- Voltage - Supply:
- 0V ~ 5.5V
- Voltage - Load:
- 4.5V ~ 33V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
DRV8426PRGER FAQ
1.How can I place an order for DRV8426PRGER through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8426PRGER 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 DRV8426PRGER reliable?
The price and inventory of DRV8426PRGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8426PRGER is usually 5 days.
3.What payment methods are accepted for DRV8426PRGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8426PRGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8426PRGER?
DRV8426PRGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8426PRGER 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 DRV8426PRGER?
For technical support, including DRV8426PRGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8426PRGER requirements.
6.How does Aetrix verify that DRV8426PRGER is sourced from the original manufacturer or authorized distributors?
All DRV8426PRGER 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 DRV8426PRGER meets industry standards.
7.What is the process for return or replacement of DRV8426PRGER?
All DRV8426PRGER units undergo pre-shipment inspection (PSI). If there is an issue with DRV8426PRGER, 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 DRV8426PRGER part is unused and in its original packaging.
Return procedure for DRV8426PRGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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