The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).
The DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.
A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin.
The DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins datasheet | PDF | HTML | 30 ago 2024 |
| White paper | Inside Tomorrow’s SDVs: Integrating Remote-Controlled Edge Nodes | PDF | HTML | 22 sep 2025 |
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El módulo de evaluación (EVM) DRV8434A permite una fácil evaluación del dispositivo DRV8434A.
Los dispositivos DRV8434A son soluciones integradas de controlador de motor para motores paso a paso bipolares. El dispositivo integra dos puentes en H MOSFET de potencia de canal N, circuitos de regulación (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
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