NSD8381-Q1 is an automotive-grade high-integration bipolar stepper motor driver. It features 1/32 programmable microstepping mode, programmable decay mode, integrated ADC, PWM frequency spread spectrum, sensorless stall detection, SPI, temperature alarm and shutdown to support for flexible and reliable stepper motor control. NSD8381 is specially designed for stepper motor drivers of headlight step control, HUD position adjustment motors, HVAC EXV (Electronic Expansion Valve) and flap motors, with excellent performance and stability.
Product Features
- Wide operating voltage: 4.5V-36V (Absolute max rating 40V)
- Current up to 1.35A, Rdson (HS+LS): 1.2Ω
- Programmable micro-stepping, up to 1/32 micro-stepping mode
- Four programmable decay modes:Slow Decay,Mixed Decay,Auto Decay 1,Auto Decay 2
- IO direct control of clock/direction/hold, or direct half-bridge control
- Integrated current sensor and controller. Support 16-level (4-bit) current configuration for motor running and holding
- Support PWM frequency spread spectrum for EMC performance optimization
- Support slew rate and dead time configuration
- 24-bit, 4Mhz SPI communication
- Ultra-low power sleep mode
- Integrated BEMF detection for sensorless stall detection
- Support VBat undervoltage lockout (VSUV), overcurrent protection (OCP), temperature warn(OTW/UTW) and overtemperature protection (OTSD)
- Support open-circuit diagnosis and protection of load
- Working temperature: Tj=-40°C~150°C
- AEC-Q100 qualified
Application
- HVAC Climate Flap motor
- Electronic expansion valves and multi-port valves
- Headlight step control (ADB/AFS)
- HUD position adjustment motor
Functional Block Diagram
For more product information, please contact us.
