LEM Lem Automotive Current Sensor (HC7C Series)

BrandLEM
TypeAutomotive current sensor
Specially tailored for high-power and low-voltage automotive applications, providing accurate and reliable current measurement solutions for automotive electronic systems.
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Product Introduction

Overview
Employing ?open-loop Hall-effect technology?, the HC7C series delivers precise measurement of ?DC/AC currents? (0 to ±1200A). Designed for critical applications in ?new energy vehicles (NEVs)?, it provides high-accuracy current monitoring and control support for ?generators?, ?inverters?, and ?automotive electronic control systems (ECUs)?.

Key Features?

  • ?Precision Measurement?:Utilizes advanced Hall-effect sensing with calibration technology and reinforced insulation design, maintaining high-accuracy current measurement under extreme temperatures (-40°C to +125°C) and complex operating conditions13.
  • ?Extended Measurement Range?:Supports ±1200A current detection, addressing high-power demands in automotive electronic systems with flexible integration solutions14.
  • ?Rapid Dynamic Response?:Achieves ultra-low latency with 40kHz bandwidth for real-time current tracking, enhancing system stability and efficiency13.
  • ?Enhanced Reliability?:Validated minimal thermal/sensitivity drift through rigorous testing, ensuring prolonged operational stability in harsh environments.

Application

1. EV Powertrains?

  • ?Inverter Current Sensing?: Monitors phase currents with ±0.5° phase accuracy, optimizing FOC control
  • ?DC/DC Converters?: Provides ±5mA resolution for 48V/400V bus voltage regulation
  • ?Regenerative Braking?: Extends range by 7-12% through precise energy recovery control

2. HEV Systems?

  • ?Starter-Generator Control?: 200kHz sampling rate for cranking current detection
  • ?DC Busbar Protection?: Isolated measurement for ISO 6469-3 compliant fault detection

?3. Automotive ECUs?

  • ?Safety Systems?: <100μs overcurrent response for ASIL-C compliant protection
  • ?Energy Management?: CAN FD interface (8Mbps) for battery SOC calculation
Details Image

Current Sensor & IGBT Module Assembly Schematic