Southchip launches linear Hall-effect current sensor
2026-07-14
Southchip announced the release of its new linear Hall-effect current sensor chip series SCS910X, delivering a high-precision, fully domestic solution for wide-range current detection based on external magnetic concentrators. The series is ideally suited for high-current applications such as phase current sensing in electric vehicle traction inverters and current modules in photovoltaic inverters.
As the second major addition to Southchip's magnetic sensing portfolio, SCS910X series is offered in three package options (TO-94/BS/BV), each achieving industry-leading performance across key specifications including temperature drift accuracy, bandwidth, and current range. Both automotive-grade (AEC-Q100 Grade 0) and industrial-grade versions are available, with the automotive-grade devices qualified for reliable operation across a wide temperature range of -40℃ to +150℃.
SCS910X series leverages a closed-loop architecture combined with CFC algorithms and Southchip's proprietary Hall-sensing process, delivering superior temperature drift performance, wider bandwidth, and enhanced reliability.
Superior Temperature Drift Performance: SCS910X series achieves a sensitivity temperature drift of less than ±0.5% and a zero-point voltage drift of less than ±1mV across the full temperature range. This ensures exceptional current measurement accuracy even under extreme cold or high-temperature operation conditions, significantly outperforming competing solutions.
Wider Bandwidth: SCS910X series is available in two speed grades: 1MHz bandwidth with 0.5μs response time and 400kHz bandwidth with 1μs response time, with overcurrent protection response as fast as 1μs. This enables low-latency, low-distortion current sensing and fast overcurrent protection for motor control systems, delivering industry-leading bandwidth and response speed.
Enhanced Reliability: All pins of SCS910X series support 12V DC withstand voltage and undervoltage lockout, providing industry-leading protection for safe system operation. The series offers best-in-class ESD performance, with HBM ratings up to ±8kV and CDM ratings up to ±2kV, while achieving MSL Level 1 (Moisture Sensitivity Level) – significantly improving robustness during manufacturing and end-user applications.
Flexible Selection with Low-Voltage Programmability
SCS910X series supports both ratiometric and fixed-output modes. Ratiometric versions scale output signals (sensitivity and zero-point voltage) proportionally with supply voltage, with gain versions offering open-drain OCD output (factory-programmable overcurrent threshold, hysteresis, and filter delay). Fixed-output versions maintain stable output independent of supply voltage variations, with gain versions providing a VREF reference voltage output for improved stability in power-disturbed environment.
The series supports a wide sensitivity programming range of 0.18mV/G to 12.9mV/G, corresponding to a full-scale magnetic flux density range of ±200Gauss to ±5000Gauss, significantly reducing the complexity of magnetic core design for users.
SCS910X is available in both 3.3V and 5V versions to accommodate different control system voltage levels. Multiple package options offer strong compatibility, including a 1mm ultra-thin TO-94 package, along with various lead forming options (different standoff heights for L-bend and V-bend configurations), supporting both PCB surface-mount and diverse customer mechanical designs – making it an ideal choice for current sensing module vendors and integrated electric drive system designers.
Southchip's Magnetic Sensing Portfolio
With the rapid adoption of electric vehicles and the growing penetration of 800V platforms and SiC/GaN wide-bandgap semiconductors, the demand for high-performance current sensing has never been greater. High-precision Hall-effect sensors have become essential sensing components in electric drive systems – and SCS910X series is purpose-built to address this high-growth, high-performance application space.
Earlier, Southchip introduced SCS81XX series of integrated current sensors, which embed both the conductor and magnetic core within the package. These devices are optimized for compact, moderate-current applications below 200A, offering advantages such as small footprint, minimal external components, and plug-and-play simplicity.
SCS910X series, by contrast, requires an external magnetic concentrator and is specifically designed for wide-range, high-current applications spanning 70A to over 1600A, delivering exceptional flexibility, strong immunity to external magnetic interference, and scalable range.
Together, the two series complement each other seamlessly, covering the full spectrum of current sensing requirement – from module-level to full traction-drive systems.
