2025/09/24
2025/09/15
2025/08/29
2025/09/24
Driven by the surge in electric & intelligent vehicles, ITMS (integrated thermal-management systems), ADB/AFS/DLP front-lighting systems, HUD (head-up display) and smart & hidden air-vent controls are rapidly moving from flagship options to mainstream must-haves. These applications typically rely on stepper-motor drivers.
To address the growing demand for the stepper motor driver in electric & intelligent vehicles, NOVOSENSE has launched NSD8389-Q1 – the second-generation high-performance automotive stepper motor driver. This device allows OEM & Tiers to achieve high-precision and high-reliability stepper motor control while further advancing the shift towards electric and intelligent vehicles.
Applications for stepper motor driver
Key features of NSD8389-Q1
◆ Wide operating voltage range: 4.5V-36V (max. 40V)
◆ RDS(ON) and current: 900mΩ; 1.5A full scale
◆ Programmable micro-stepping up to 1/256 usteps
◆ 8 Decay Modes: smart tune, slow, and mixed decay options
◆ Slew rate & dead time & spread spectrum configurable
◆ the A Version supporting BLANK and OPL time configuration
◆ 16-bit SPI supporting daisy-chain
◆ Integrated sensorless stall detection, load open-circuit detection, and per-channel overcurrent detection
◆ Undervoltage lockout (VSUV & CPUV), temperature warning (OTW/UTW), and overtemperature protection (OTSD & TJ Fault)
◆ Operating junction temperature range: -40°C to 150°C
◆ Package options including VQFN24 and HTSSOP24
◆ AEC-Q100 qualified
NSD8389-Q1 features 1/256 programmable microstepping mode, 8 decay mode, integrated PWM frequency spread spectrum, slew rate, dead time, sensorless stall detection, SPI interface, temperature alarm and shutdown to support for flexible and reliable stepper motor control.
Sensorless stall detection for enhanced system design flexibility
SD8389-Q1 comes with sensorless stall detection capability – the back-EMF characteristics of the motor is monitored using its built-in ADC to allow real-time stall detection. NSD8389-Q1 adopts the same stall detection algorithm with NSD8381-Q1. For a detailed explanation of the stall detection mechanism, please refer to our video: Technology Sharing | Stepper Motor Stall Detection
Integrated protections and load detection capability for improved system stability
NSD8389-Q1 integrates robust protections, including undervoltage lockout (VSUV & CPUV), temperature warning (OTW/UTW), overtemperature protection (OTSD & TJ Fault), and output load open-circuit diagnosis and protection. Furthermore, each channel is equipped with overcurrent detection and load open-circuit detection capabilities, enhancing system safety and reliability.
Multiple variants available
NSD8389-Q1 is available in HTSSOP24 and QFN24 packages. A Version and non-A version are differentiated by default DRV_DIS states and BLANK/OPL time configurations. See the product selection guide below for details.
