Gasgoo Awards 2023 applicant: Automotive PWM output two-wire differential wheel speed sensor: SC9642 from Semiment Technology Co., Ltd

Product: Automotive PWM output two-wire differential wheel speed sensor: SC9642 

Description

SC9642TS is a two-wire current output wheel speed sensor IC based on Pulse Width Modulation (PWM) technology. It’s applied to ABS system which monitor vehicle speed and direction. No need for peripheral elements, and fast power on time, wide working frequency. This chip used BiCMOS process to ensure high ESD and EMC protection. Excellent sensitivity performance and accuracy at all operating temperature make the chip suitable for fierce automotive applications.  Main technical specifications: Operating voltage 4.5~24V, Absolute supply voltage +30V; 7mA/14mA current output; Magnetic offset correction range up to ±20mT; Operating temperature -40~150 degrees Celsius; Supports speed and direction detection;

Unique advantages

Dynamic self-correction technology; Anti-electromagnetic interference technology for output; Ultra-thin packaging technology;

Application

SC9642 is mainly used in automotive ABS wheel speed sensors, which provide wheel speed information for the anti-lock braking system (ABS) control system by detecting the  vehicle's wheel speed. It is one of the most critical sensors in automotive safety systems.

Prospect

Semiment designs and develops products that meet customer and market needs by deeply exploring the automotive electronics and industrial application markets and technological innovation. After years of technical accumulation, the company has formed three major product lines, including speed sensor IC, position sensor IC, and current sensor IC. The company has passed the ISO26262 automotive functional safety management system certification, and most of chip products have passed AEC-Q100 certification. The market share of position sensor chips in the domestic light EV motor control system exceeds 30%.  The company continues to invest in research and development and upgrade iteration of magnetic sensor chip technology. And based on mainstream magnetic sensor chip technology, Semiment deeply develops 3D Hall effect technology products, electromagnetic induction technology products, magnetic encoder chip products, and synchronously develops TMR technology products for automotive applications. The company conducts industrialization and mass production in high-performance application scenarios such as high precision and high sensitivity. At the same time, in order to implement the safety, reliability, and consistency requirements of automotive chip products, the company continuously improves its research and development capabilities and technical level, and develops and designs vehicle-grade chip products with high quality, high reliability, and functional safety based on the ISO26262 automotive functional safety management system certification.  In the future, in the development of new chips, the company will continue to deeply explore the application requirements of automotive electronic control systems based on magnetic sensor chip products, and based on the technology and business experience accumulation in analog and mixed-signal processing, continue to upgrade and iterate magnetic sensor chip products, and further develop analog and mixed-signal chips products such as power management and motor driver in automotive electronic control systems.