EmbeddedRelated.com
Jacob Beningo
Live online course · Jacob Beningo
AI for Embedded Developers
$100 off for EmbeddedRelated readers until Nov 1 · 5 live sessions, Dec 7-11
Discount ends in
18days 02hrs 57min 44sec
Learn More →
    Parts    DRV8434RGER
DRV8434RGER

TIDRV8434RGER

Texas Instruments
Bipolar Motor Driver Power MOSFET Step/Direction 24-VQFN (4x4)
Active2,819 in stock
Datasheet Digi-Key Compare Prices

Overview

The DRV8434RGER is a highly integrated bipolar stepper motor driver featuring an H-bridge design with a Step/Direction interface. It supports a wide operating voltage from 4.5V to 48V and can deliver up to 2.5A of output current, making it suitable for industrial and automation applications. The device includes integrated current sensing and advanced tuning features to simplify system design and improve motor performance.

Why Choose This Part

This driver eliminates the need for external sense resistors through integrated current sensing, reducing PCB area and BOM cost. It features TI's Smart Tune technology for automatic decay mode adjustment, ensuring optimal current regulation across varying motor conditions. Additionally, the 2uA sleep current and comprehensive protection suite (UVLO, OCP, OTSD) enhance system efficiency and reliability.

Applications

Industrial Robotics
High-precision motion control in factory automation and robotic arms requiring up to 1/256 microstepping.
3D Printers and CNC Machines
Quiet and smooth motor operation enabled by Smart Tune and spread spectrum clocking technologies.
ATM and Money Handling
Reliable paper and bill feeding mechanisms with integrated protection features like overcurrent and thermal shutdown.
Medical Equipment
Precise fluid pumping and positioning in medical devices that benefit from the 4 percent current accuracy.

Key Specifications

Function Driver - Fully Integrated, Control and Power Stage
Interface Step/Direction
Technology Power MOSFET
Applications General Purpose
Mounting Type Surface Mount
Package / Case 24-VFQFN Exposed Pad
Step Resolution >256 Microsteps
Current - Output 2.5A
Voltage - Supply 4.5V ~ 48V
Motor Type - AC, DC Brushless DC (BLDC), Brushed DC
Motor Type - Stepper Bipolar
Output Configuration Half Bridge (2)
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 24-VQFN (4x4)

Getting Started

To evaluate this part, use the DRV8434EVM evaluation module which allows for easy tuning of the Step/Direction interface. Ensure the thermal pad of the VQFN package is properly soldered to a large copper ground plane to manage heat at higher current levels. Configure the microstepping and decay modes via the hardware pins or the digital interface provided on the dev board.

DRV8434 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Output I Function Interface Technology Step Resolution Motor Type - AC, DC Stock
DRV8434RGER (this part) 2.5A Driver - Fully Int.. Step/Direction Power MOSFET >256 Microsteps Brushless DC (BLDC.. 2,819
DRV8434SRGER 2.5A Driver - Fully Int.. SPI, Step/Direction NMOS 1 ~ 1/256 Brushed DC 8,547
DRV8434ARGER 2.5A Driver - Fully Int.. Step/Direction NMOS 1 ~ 1/256 Brushed DC 3,827
DRV8434EEVM — Motor Controller/D.. — — — — 6
DRV8434SEVM — Motor Controller/D.. — — — — 40
DRV8434AQWRGERQ1 1.8A Driver - Fully Int.. PWM, SPI, Step/Dir.. Power MOSFET 1 ~ 1/256 Brushless DC (BLDC) 1,371
DRV8434AEVM — Motor Controller/D.. — — — — 54
Also available as: DRV8434APWPR

Also Consider

DRV8434S TITexas Instruments - Choose this version if an SPI interface is required for advanced configuration and diagnostic reporting instead of hardware pins.
DRV8424 TITexas Instruments - A pin-compatible alternative for applications requiring slightly lower current (up to 2.5A peak) but with similar integrated sensing.
TMC2209 Trinamic - An alternative for 3D printing applications known for ultra-quiet StealthChop technology at lower operating voltages.