1. One-Sentence Description
The HAH3DR 800-S07/SP4 is a three-phase open-loop Hall effect current sensor designed for automotive applications, supporting high-precision measurement of DC, AC, and pulsed currents (±800A) with electrical isolation and wide-temperature stability.
2. Core Features
- Open-Loop Hall Effect Technology: Based on the proportional relationship between magnetic field strength and current (B=a×Ip), non-contact measurement is achieved through Hall voltage.
- Wide Measurement Range: Single-channel current detection range up to ±800A, suitable for high-power scenarios.
- Low Voltage Compatibility: Requires only 5V DC power supply, adapting to vehicle low-voltage systems.
- High Reliability: No insertion loss, high-frequency bandwidth (40kHz), and strong anti-interference capability.
- Integrated Design: Single module covers three-phase current detection, simplifying wiring.
- Mainstream Platform Adaptation: Perfectly matches Infineon HybridPACK™ drive systems.
- Weldless Installation: Press-fit terminals or blind threaded holes (SP4 series) design improves assembly efficiency.
3.Core Technical Indicators
4. The Story Behind the Chip
The HAH3DR series originates from LEM Group’s deep insight into the electrification trend of automobiles. Traditional current detection solutions have problems such as large volume and susceptibility to interference, while the open-loop Hall technology solves these pain points through integrated design. The HAH3DR 800-S07/SP4 uses patented magnetic circuit optimization (such as the blind threaded hole design of the SP4 series) to reduce thermal drift while ensuring accuracy, which is particularly suitable for the harsh environment of new energy vehicles.
5. Design Philosophy
- High Reliability Priority: Passed ±125℃ temperature resistance test, 8kV ESD protection, and 1000-hour high-temperature aging screening to ensure long-term stability in vehicle scenarios.
- Balance of Precision and Efficiency: Introduce temperature compensation algorithms (TCU, TCS) to control sensitivity temperature drift within ±0.03%/℃.
- Modular Expansion: Supports multi-phase integration, facilitating the construction of three-phase motor control systems.
6. Application Scenarios
- New Energy Vehicles: Real-time current monitoring of battery management systems (BMS) and motor controllers (MCU).
- Hybrid Systems: Power management of DC/DC converters and chargers in HEV/EV.
- Industrial Fields: Current detection and protection for charging piles and frequency converters.
7. Unique Advantages
- Zero Insertion Loss: No conduction resistance, avoiding energy waste.
- Extremely Fast Response: 90% output delay is only 2~6μs, adapting to high-frequency switching scenarios.
- Installation Convenience: The SP4 series has built-in blind threaded holes, which can be fixed on the heat dissipation substrate without welding.
- Full Working Condition Calibration: Provides error compensation data in the full temperature range of -40℃~125℃ (see total error curve).
8. What Engineers Must Know for Selection
- Rated Current Matching: Select models according to the load (e.g., 800A corresponds to HAH3DR 800-S07/SP4).
- Thermal Design Considerations: The maximum allowable current is limited by the temperature rise of the busbar copper, core, and ASIC (needs collaborative design).
- Anti-Interference Measures: It is recommended to use RC filters (optional) and shielded cables to suppress EMC noise.
- Certification Compliance: Passed ISO 16750-4 vibration/temperature shock tests to meet automotive-grade reliability requirements.
- Diagnostic Interface: Optional 10kΩ resistor connected to the signal line for online fault detection.
Conclusion: The HAH3DR 800-S07/SP4 has become a core component for current detection in new energy vehicles with its high precision, wide temperature range, and weldless design. Engineers need to focus on temperature compensation parameters and mechanical installation specifications to fully leverage its performance advantages.
Contact:
Sylvia Xu | ECSource Components Co.,Limited
Top 10 Test Laboratory Distributors in Asia.
D-U-N-S Number:655918890 | ISO90001 Certificated Company
Phone/Whatsapp: 0086-19806586673
Email:sylvia@ecsource.net
Line Card : FPGA, RF, MEMORY,CONNECTOR,Power
