TIDRV8434AQWRGERQ1
Overview
The DRV8434AQWRGERQ1 is an AEC-Q100 qualified bipolar stepper motor driver designed for automotive applications requiring up to 2.5A peak output current. It integrates a full control and power stage, supporting microstepping up to 1/256 and operating across a wide supply range of 4.5V to 48V. The device features sensorless stall detection and smart tune ripple control to optimize motor efficiency and noise performance.
Why Choose This Part
This driver offers sensorless stall detection to eliminate the cost and complexity of external sensors or limit switches. It includes spread spectrum clocking to reduce EMI and smart tune decay modes that automatically adjust for optimal current regulation across varying motor conditions.
Applications
Key Specifications
Getting Started
Evaluation can be performed using the DRV8434AEVM hardware, which allows for quick testing of the STEP/DIR interface and current regulation settings. Engineers should focus on thermal PCB layout given the 4x4mm VQFN package and configure the nFAULT and STALL pins for real-time diagnostic monitoring in safety-capable systems.
DRV8434 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Output I | Function | Interface | Technology | Motor Type - AC, DC | Output Configuration | Stock |
|---|---|---|---|---|---|---|---|
| DRV8434AQWRGERQ1 (this part) | 1.8A | Driver - Fully Int.. | PWM, SPI, Step/Dir.. | Power MOSFET | Brushless DC (BLDC) | Half Bridge (4) | 1,371 |
| DRV8434ARGER | 2.5A | Driver - Fully Int.. | Step/Direction | NMOS | Brushed DC | Half Bridge | 3,827 |
| DRV8434SRGER | 2.5A | Driver - Fully Int.. | SPI, Step/Direction | NMOS | Brushed DC | Half Bridge | 2,094 |
| DRV8434EEVM | — | Motor Controller/D.. | — | — | — | — | 6 |
| DRV8434SEVM | — | Motor Controller/D.. | — | — | — | — | 40 |
| DRV8434AEVM | — | Motor Controller/D.. | — | — | — | — | 61 |
