Naxin Micro launches a new car grade programmable stepper motor driver NSD8381 Q1
Time:2023-12-19
Views:470
With the rapid popularization of intelligent new energy vehicles, a series of high-end configurations such as adaptive headlights, centralized thermal management systems, and HUD head up display are gradually becoming industry standards. This trend has also led to a rapid increase in demand for stepper drives in the automotive supply chain and OEMs. Faced with the demand for such applications, Nano Microelectronics has launched a new NSD8381-Q1 automotive grade programmable stepper motor driver. This product is designed specifically for headlight stepper control, head up display position adjustment motor, HVAC damper motor, and drive control of various valves, with excellent performance and stability.
Naxin Micro launches a new car grade programmable stepper motor driver NSD8381-Q1
NSD8381-Q1 Product Features:
• Wide working voltage: 4.5V-36V (maximum 40V)
• Current up to 1.35A, conducting resistance (HS+LS): 1.2 Ω
• Programmable multiple subdivision modes, up to 32 subdivision modes
• Four programmable decay modes
• Programmable input IO port for direct control of stepper clock/direction/hold, or direct half bridge control
• Built in current sensor and PWM controller, 16 speed (4 positions) motor running current and holding current configuration
• Support PWM jitter for EMC performance optimization
• Support configuration of output stage swing rate and dead time
• 24 bit, 4MHz SPI communication
• Ultra low power sleep mode
• Integrated back electromotive force detection can achieve sensorless stall and stall detection
• Supports bus undervoltage lockout (VSUV), overcurrent protection (OCP), temperature alarm (OTW/UTW), and over temperature protection (OTSD)
• Support open circuit diagnosis and protection for output loads
• Working temperature: -40 ° C~125 ° C
• Packaging form: VQFN40, VQFN32
• AEC-Q100 certification
NSD8381-Q1 Functional Block Diagram
NSD8381-Q1 is an automotive grade highly integrated two-phase bipolar stepper motor driver, with programmable micro step mode, programmable decay mode, integrated ADC, PWM frequency swing, sensorless stall detection, integrated serial peripheral interface (SPI), overheating alarm and shutdown characteristics.
Fine and smooth stepper motor control
NSD8381-Q1 aims to optimize the precise and smooth operation and EMC issues of stepper motors from various aspects such as subdivision mode, decay mode, current loop control, PWM frequency regulation, and driver stage switch speed regulation, ensuring smooth and precise motor operation, precise positioning, and optimizing EMC performance.
NSD8381-Q1 supports programmable multi fine step mode, up to 32 fine step modes; Supports four programmable decay modes (automatic mixing decay mode 1, automatic mixing decay mode 2, slow decay mode, mixed decay mode), and can freely match fast/slow/mixed decay modes during the current rise and fall cycles. Built in current detection eliminates the need for external sampling to detect resistance. 16 level (4-bit) current configuration, which can control hold and running current separately. Support PWM frequency jitter, pressure swing rate adjustment, and optimize the EMC performance of the motor.
NSD8381-Q1 motor current waveform under different subdivision modes
Fully independent 4-way half bridge control
NSD8381-Q1 supports configuration with 4 independent half bridge drives, which can drive general inductive resistive loads, DC motors, or LEDs. More flexible adaptation to different load conditions.
Application diagram of NSD8381-Q1 driving stepper motor and 2 DC motors
Senseless stall protection function
When a stepper motor is in operation, there is a specific relationship between the back electromotive force and phase current, which can reflect the operating status of the stepper motor. The back electromotive force detection module of the built-in point motor in NSD8381-Q1 will sample the back electromotive force of the motor at the zero crossing point of the current in each cycle. By comparing the back electromotive force voltage with the built-in threshold voltage, determine the operating status of the motor.
When the motor is stuck, the current zero crossing point and back electromotive force waveform
Current zero crossing and back electromotive force waveform during motor operation
Comprehensive protection functions
NSD8381-Q1 integrates full function protection support, supporting bus undervoltage locking (VSUV), overcurrent protection (OCP), temperature alarm (OTW/UTW), and over temperature protection (OTSD), and supporting open circuit diagnosis and protection of output loads. All protection functions can not only be accurately read through SPI, but NSD8381-Q1 also features output pins that can map fault outputs, making MCU response to faults more efficient.
More compact packaging
NSD8381-Q1 offers both VQFN40 (6mm x 6mm) and VQFN32 (5mm x 5mm) packages, with smaller dimensions to help customers achieve higher integration of PCBA and control BOM costs.
Samples can be provided for the above products. If you need to apply for samples, please email them to sales@novosns.com Or call 0512-62601802-810 for consultation.
NSD8381-Q1 Series Product Selection Table
About Nano Microelectronics
Nanochip Microelectronics (referred to as Nanochip Microelectronics, stock code 688052 on the Science and Technology Innovation Board) is a high-performance and highly reliable analog and mixed signal chip company. Since its establishment in 2013, the company has focused on three major directions: sensors, signal chains, and power management, providing a rich range of semiconductor products and solutions, which have been widely applied in the fields of automotive, industrial, information communication, and consumer electronics.
Naxin Micro‘s mission is to "perceive" and "drive" the future, and jointly build a green, intelligent, and interconnected "chip" world, committed to providing chip level solutions for the connection between the digital world and the real world.
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