HC5FW 200-S/SP1 , HC5FW200-S/SP1

HC5FW 200-S/SP1 Automotive Open-Loop Hall-Effect Current Sensor

HC5FW 200-S/SP1 High-Precision Current Sensing for Next-Generation Automotive Motor Control

Against the backdrop of rapidly evolving new energy vehicles and motor control systems, high-accuracy, high-reliability current sensing has become a key factor determining overall system performance and safety. HC5FW series automotive current sensors from LEM, a world-leading provider of electrical measurement solutions, are high-performance products designed precisely to meet these demanding requirements.

The HC5FW 200-S/SP1 is a flagship model of the HC5FW series, rated at 200 A and specifically developed for medium- to high-power automotive motor control applications. Combining outstanding accuracy, a wide operating temperature range, compact PCB mounting design, and excellent electrical isolation, it is the ideal choice for core modules such as traction inverters in new energy vehicles, electric power steering systems, and DCDC converters.

HC5FW 200-S/SP1 Key Specifications

HC5FW 200-S/SP1 Core Technical Advantages

High Accuracy & High Linearity for Precise Control
With ±2 % accuracy and ±1 % linearity, the HC5FW 200S/SP1 delivers reliable current data to motor control algorithms, optimising system efficiency and improving overall vehicle performance.

Fast Response for Dynamic Current Detection
A rapid response time of 6 µs enables the sensor to capture fast-changing currents in real time, providing essential feedback for overcurrent protection and real-time regulation.

Safe Electrical Isolation – Enhanced System Reliability
The open-loop Hall-effect technology inherently provides galvanic isolation between the primary power circuit and the secondary control circuit, eliminating the power loss and heat dissipation issues associated with shunt resistors. This significantly improves system safety and long-term stability.

Wide Temperature Range – Reliable in Harsh Environments
The wide operating temperature range of −40 °C to +125 °C, combined with LEM’s proprietary ASIC and precision-aligned magnetic core, ensures low drift and high stability even in severe automotive environments.

Compact Design – Easy Integration
The PCB through-hole mounting method and compact footprint allow easy integration into space-limited electronic control units. The unique circular aperture accommodates both rectangular and round busbars, and the built-in isolation sleeve meets demanding high-voltage insulation requirements.

High Reliability – Automotive Grade
The sensor is in active production (Active status) with tape-and-reel packaging. It is an automotive-grade product, fully RoHS3 compliant. The precisely assembled and calibrated magnetic core design ensures outstanding reliability in demanding motor control applications.

HC5FW 200-S/SP1 Typical Applications

The HC5FW 200-S/SP1 plays a critical role in many areas of automotive electrification and intelligent development:

Traction inverters for xEV (electric vehicles) – DC-link and phase current detection

Electric power steering (EPS)

Integrated starter-generators (ISG)

DC-DC converters

Battery management systems (BMS)

Automotive HVAC systems

Why Choose the HC5FW 200-S/SP1?

In motor control systems, accurate current sensing directly influences system efficiency and safety. As a representative product of LEM’s automotive current sensor family, the HC5FW 200-S/SP1 inherits LEM’s well-known high accuracy and reliability. The precisely assembled and calibrated magnetic core, together with LEM’s proprietary ASIC, ensures stable performance even in the most demanding motor control applications.

Whether you are developing a traction inverter for a new energy vehicle or designing a highend industrial motor control system, the HC5FW 200-S/SP1 provides a precise and reliable current sensing solution.