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Texas Instruments DRV8434ERGER
- Part No.:
- DRV8434ERGER
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
DRV8434ERGER.pdf
- Description:
- 48-V, 2.5-A BIPOLAR STEPPER OR D
- Quantity:
- Payment:
- Shipping:
Inventory:2,863
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Product details
Overview
DRV8434ERGER from Texas Instruments is a dual H-bridge motor driver IC for bipolar stepper and brushed-DC motors, featuring integrated current sensing (±4% full-scale accuracy), 4.5–48 V operation, 330 mΩ total RDS(ON) per bridge at 24 V/25°C, and Smart Tune dynamic decay control. It delivers up to 2.5-A full-scale stepper current or 4-A peak brushed-DC current in a 4.0 mm × 4.0 mm VQFN-24 package.
For engineers reviewing the DRV8434ERGER datasheet, DRV8434ERGER pinout, DRV8434ERGER application, or DRV8434ERGER equivalent, this page provides verified technical context, validated pin functions, real-world motor control use cases, and confirmed alternative options - all grounded in TI's SLOSE49 production datasheet and official package documentation.
Technical Context
The DRV8434ERGER integrates two N-channel H-bridges with internal current mirror sensing-eliminating external shunt resistors-and supports PHASE/ENABLE (PH/EN) control mode. Its Smart Tune Dynamic Decay and Ripple Control modes adapt decay behavior per motor dynamics, while configurable off-times (7/16/24/32 μs) and quad-level ADECAY/BDECAY pins enable precise current regulation.
It includes a charge pump for high-side gate drive, a 5-V DVDD linear regulator (2 mA max), and comprehensive protection: VM UVLO (4.25 V nominal), charge pump undervoltage, overcurrent (4-A peak), thermal shutdown (150°C), and open-drain nFAULT reporting. Logic inputs accept 1.8-V/3.3-V/5.0-V levels with internal pulldowns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 48 V - supports wide industrial motor rails without external DC-DC pre-regulation. |
| RDS(ON) (HS + LS) | 330 mΩ at 24 V/25°C - enables low conduction loss and reduced thermal load in compact layouts. |
| Full-Scale Current (Stepper) | 2.5 A - sets maximum continuous winding current with integrated chopping regulation via VREFA/VREFB. |
| Peak Current (Brushed) | 4 A - supports short-duration torque bursts in bidirectional DC motor control. |
| Current Sense Accuracy | ±4% full-scale - eliminates need for precision external sense resistors and associated board area/cost. |
| Sleep Current | 2 µA - enables ultra-low-power standby in battery-powered or energy-sensitive systems. |
| Logic Compatibility | 1.8-V / 3.3-V / 5.0-V inputs - interfaces directly with MCU GPIOs without level-shifting circuitry. |
Pinout & Package
VQFN-24 package (4.0 mm × 4.0 mm, exposed thermal pad); RoHS-compliant, moisture sensitivity level 2 (MSL-2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUT1, AOUT2 | H-bridge A motor outputs | Connect to one stepper winding or brushed motor terminals; support bidirectional current flow. |
| BOUT1, BOUT2 | H-bridge B motor outputs | Connect to second stepper winding or independent brushed motor; electrically isolated from Bridge A. |
| APH, AEN | Bridge A PH/EN control inputs | Phase determines direction (APH = H → AOUT1→AOUT2); AEN enables/disables bridge (Hi-Z when low). |
| BPH, BEN | Bridge B PH/EN control inputs | Functionally identical to APH/AEN but for Bridge B; independent control enables dual-motor operation. |
| VREFA, VREFB | Current reference inputs | Set full-scale chopping current (IFS = VREFx / 1.32 V/A); 0.05–3.3 V range supports fine-grained tuning. |
| ADECAY, BDECAY | Quad-level decay mode select | Configure Smart Tune Dynamic, Ripple Control, Mixed (30% fast), or Fast decay per bridge independently. |
| TOFF | Off-time configuration input | Selects PWM off-time: 7/16/24/32 μs - defines current decay duration and ripple profile. |
| nFAULT | Open-drain fault indicator | Pulled low on UVLO, OCP, CPUV, or OTSD; requires external pullup; clears on nSLEEP low pulse. |
| nSLEEP | Low-power enable input | Logic high activates device; logic low enters 2-µA sleep; internal pulldown ensures safe default state. |
| VM, PGND | Motor power supply and ground | High-current path; requires local 0.01-μF ceramic + bulk capacitor bypassing per pin for stability. |
| DVDD | Internal 5-V logic regulator output | Supplies 2 mA max; powers logic circuits and can bias quad-level inputs (not nSLEEP) to reduce system power. |
| CPH, CPL, VCP | Charge pump nodes | CPH/CPL require 0.022-μF X7R cap; VCP requires 0.22-μF X7R cap to generate gate drive voltage > VM. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing | Removes external shunt resistors, saving ≥12 mm² PCB area and eliminating 1–2 W of sense resistor power loss. |
| Smart Tune Dynamic Decay | Automatically adjusts fast/slow decay ratio each PWM cycle to minimize current ripple without manual tuning. |
| Configurable off-time PWM | Four discrete tOFF values (7/16/24/32 μs) allow trade-off between current ripple, efficiency, and acoustic noise. |
| Spread spectrum clocking | Reduces EMI peak emissions by spreading switching frequency energy across a narrow band, easing EMC compliance. |
| Ultra-low sleep current | 2 µA quiescent draw enables multi-year battery life in portable robotics or IoT actuators with intermittent motion. |
Applications
| Printers and Scanners | Factory Automation |
|---|---|
|
Use Scenario: Precision paper feed and scan head positioning using 2-phase bipolar stepper motors. IC Role / Device Role / Timing Role: Dual H-bridge driver with synchronized current regulation across both windings for microstepping smoothness. Use Value: ±4% current accuracy and Smart Tune Dynamic Decay reduce positional jitter and audible vibration during low-speed operation. |
Use Scenario: Actuating conveyor belt gates and pick-and-place end-effectors with dual brushed-DC motors. IC Role / Device Role / Timing Role: Independent PH/EN-controlled bridges enabling simultaneous forward/reverse motion and braking. Use Value: 4-A peak current per bridge supports rapid acceleration of mechanical loads; inrush limiting prevents supply sag. |
| Home Appliances | Robotics Platforms |
|
Use Scenario: Driving drum rotation and water valve actuation in washing machines and dishwashers. IC Role / Device Role / Timing Role: Stepper + brushed-DC co-driving from single IC - e.g., stepper for detergent dispenser, brushed for pump. Use Value: Single-chip dual functionality reduces BOM count and interconnect complexity versus discrete driver solutions. |
Use Scenario: Controlling bipedal joint actuators or vacuum robot brush motors requiring compact, efficient drive. IC Role / Device Role / Timing Role: Motor driver with thermal shutdown (150°C) and fault reporting (nFAULT) for autonomous safety-critical motion. Use Value: 2-µA sleep mode extends runtime between charges; VQFN-24 package fits tight chassis constraints. |
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 |
|---|---|---|---|
| DRV8424ERGER | Identical 4.0 mm × 4.0 mm VQFN-24 package and PH/EN interface; same 330 mΩ RDS(ON), but 33-V max VM rating. | Best suited for 24-V systems where 48-V headroom is unnecessary; lower voltage rating reduces cost and layout margin requirements. | Select DRV8424ERGER if operating VM ≤ 33 V and cost optimization is prioritized over 48-V flexibility. |
| DRV8436ERGER | Same 48-V VM rating and VQFN-24 footprint, but higher 900 mΩ RDS(ON); otherwise identical feature set and pinout. | Preferred for thermally constrained designs where lower power dissipation is less critical than cost or availability. | Choose DRV8436ERGER only when thermal budget allows higher conduction loss, or when legacy design reuse mandates same footprint with relaxed efficiency needs. |
Compared with DRV8424ERGER and DRV8436ERGER, the DRV8434ERGER uniquely balances 48-V capability, low 330-mΩ RDS(ON), and Smart Tune - making it optimal for high-efficiency, wide-input industrial and robotics applications where thermal performance and adaptive current control are essential.
Availability
DRV8434ERGER is available at Aetrix Electronics and suitable for printers and scanners, factory automation systems, home appliances, and robotics platforms requiring stable component supply, long-term manufacturability, and automotive-grade reliability under extended temperature operation.
Supply support for DRV8434ERGER 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 high-reliability power management solutions for industrial, automotive, and consumer markets.
The DRV8434E series is part of TI's high-voltage motor driver portfolio, designed specifically for compact, efficient, and intelligent motion control in space-constrained industrial and robotics applications.
FAQ
What control interface does the DRV8434ERGER support?
The DRV8434ERGER uses the PHASE/ENABLE (PH/EN) interface: APH determines motor direction (forward/reverse), and AEN enables or disables Bridge A. This differs from the PWM-mode DRV8434P variant. The DRV8434ERGER does not support IN/IN PWM control - its logic inputs are strictly PH/EN configured per TI's SLOSE49 datasheet Section 7.3.1.
How does the integrated current sensing in DRV8434ERGER eliminate external shunt resistors?
The DRV8434ERGER uses an internal current mirror architecture that samples current through the power MOSFETs themselves, rather than dissipating power in external shunts. This achieves ±4% full-scale accuracy while removing the need for two high-wattage, board-area-consuming sense resistors - directly reducing BOM cost, thermal load, and PCB footprint.
What decay modes are available on the DRV8434ERGER, and how are they selected?
The DRV8434ERGER supports four decay modes per bridge: Smart Tune Dynamic Decay, Smart Tune Ripple Control, Mixed decay (30% fast), and Fast decay. Selection is done via quad-level ADECAY and BDECAY pins using GND, Hi-Z, or 330-kΩ-to-GND configurations - no register writes or SPI commands required. Each mode is independently configurable per H-bridge.
What is the maximum continuous current the DRV8434ERGER can deliver per bridge in stepper mode?
In bipolar stepper motor applications, the DRV8434ERGER supports up to 2.5-A full-scale RMS current per winding, as defined by the VREFA/VREFB reference voltage and transimpedance gain (1.32 V/A). This value assumes adequate PCB copper area, ambient temperature ≤ 85°C, and proper thermal pad soldering - exceeding it risks thermal shutdown activation.
Does the DRV8434ERGER include protection features, and how are faults reported?
Yes, the DRV8434ERGER integrates VM undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and thermal shutdown (OTSD). All faults are reported via the open-drain nFAULT pin, which pulls low during any fault condition. A low pulse on nSLEEP clears the fault latch and resets the driver.
DRV8434ERGER 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:
- 2.5A
- Voltage - Supply:
- 4.5V ~ 48V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
DRV8434ERGER FAQ
1.How can I place an order for DRV8434ERGER through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8434ERGER 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 DRV8434ERGER reliable?
The price and inventory of DRV8434ERGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8434ERGER is usually 5 days.
3.What payment methods are accepted for DRV8434ERGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8434ERGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8434ERGER?
DRV8434ERGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8434ERGER 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 DRV8434ERGER?
For technical support, including DRV8434ERGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8434ERGER requirements.
6.How does Aetrix verify that DRV8434ERGER is sourced from the original manufacturer or authorized distributors?
All DRV8434ERGER 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 DRV8434ERGER meets industry standards.
7.What is the process for return or replacement of DRV8434ERGER?
All DRV8434ERGER units undergo pre-shipment inspection (PSI). If there is an issue with DRV8434ERGER, 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 DRV8434ERGER part is unused and in its original packaging.
Return procedure for DRV8434ERGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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