HAH3DR600-S0E Open-loop Hall Current Sensor Technical Details
1. One-sentence Description
HAH3DR600-S0E is an open-loop three-phase current sensor specifically designed for high-power low-voltage scenarios in automobiles. It can accurately measure direct current, alternating current, or pulse current within the range of ±600A, providing electrical isolation and high-stability signal output.
2. Core Features
- Wide Range Coverage: The single package supports current detection within the range of ±600A, suitable for medium-power demand scenarios.
- Open-loop Hall Architecture: No closed-loop feedback circuit is required, simplifying the design and reducing costs.
- Low Voltage Compatibility: It only requires a single power supply of +5V, which is in line with the low-power consumption trend of automotive electronics.
- Stable across the Full Temperature Range: The operating temperature range is from -40°C to +125°C, ensuring excellent long-term operation stability.
- Ratio Output Characteristic: The output voltage is proportional to the supply voltage, providing stronger anti-interference ability.
- Three-phase Synchronous Monitoring: Integrated three-phase current detection function, suitable for multi-phase motor control.
3. Core Technical Indicators
| Category | Parameter | Typical Value/Range | Condition |
|---|---|---|---|
| Power Supply Characteristics | Input Voltage (Uc) | 4.75V~5.25V | Rated operating voltage |
| Power Consumption (3 phases) | 45~60mA | Uc = 5V | |
| Measurement Performance | Sensitivity (S) | 3.33mV/A | Uc = 5V, TA = 25°C |
| Linearity Error | ±0.5% (Full Range) | TA = 25°C | |
| Response Delay | 4μs | di/dt = 100A/μs | |
| Environmental Adaptability | Operating Temperature | -40°C~+125°C | Long-term stable operation |
| Storage Temperature | -50°C~+125°C | Non-operating state | |
| Isolation and Safety | Creepage Distance/Clearance | ≥5.08mm | Compliant with IEC60664 standard |
| Insulation Resistance | ≥500MΩ (500VDC) | ISO16750 standard |
4. The Story Behind the Chip
HAH3DR600-S0E is based on LEM Group's more than 40 years of technical accumulation in the field of magnetic sensors, and is specifically designed for the medium-power demands of new energy vehicles. Through the innovative open-loop architecture, while ensuring a linearity of ±0.5%, it achieves an ultra-low total error of ±40mV (full range), solving the pain points of traditional closed-loop solutions such as large volume and high cost, and becoming an ideal choice for on-board chargers (OBC) and electric drive systems.
5. Design Concept
- Minimalist Architecture: Eliminate the coils and amplifiers of the closed-loop system, reducing power consumption and costs.
- High Bandwidth Optimization: The 40kHz bandwidth supports fast transient response, suitable for high-frequency switching scenarios.
- Enhanced Anti-interference: Built-in RC filter network (optional 4.7nF capacitor) to suppress EMC noise.
- Modular Design: Unified mechanical dimensions are suitable for multi-range requirements, reducing the customer's design iteration cycle.
6. Application Scenarios
- New Energy Vehicles:
- On-board Charger (OBC): Monitor the charging current in real-time to ensure charging efficiency and safety.
- Electric Drive System: Detect the bus current of the inverter to optimize the motor control accuracy.
- Hybrid Power Systems: Coordinate the energy distribution between the engine and the battery to improve fuel economy.
- Charging Piles: Detect the charging and discharging current to ensure compatibility and safety.
7. The Unique Advantages of This Chip
- Ultra-high Sensitivity: The sensitivity of 3.33mV/A (better than similar products) reduces the difficulty of signal conditioning.
- Ultra-low Thermal Drift: TCUOEAV is only ±0.08mV/℃, leading the competitors by 50% in long-term stability.
- No Insertion Loss: Non-contact measurement avoids wire voltage drop and improves system efficiency.
- Flexible Deployment: Supports return busbar position compensation (±110mV@1000A), suitable for complex wiring scenarios.
- Automotive-grade Reliability: Passed the ISO16750-4 vibration/impact test, meeting the 10-year service life requirement.
8. What Engineers Must Know When Selecting
- Range Matching: Ensure that the measured current does not exceed ±600A (for example, the cross-sectional area of the busbar should be ≥30mm²).
- Sensitivity Calibration: The output formula needs to calculate the zero-point offset in advance.
- Environmental Compensation: The sensitivity drift at high temperatures needs to be corrected by software (TCSAV = ±0.01%/℃).
- Layout Constraints: The distance between the return busbar and the sensor should be ≤30mm (when >100mm, the error reaches ±110mV).
- Certification Compliance: It needs to comply with the AEC-Q100 automotive-grade standard and the GMW3097 radiated immunity requirements.
Summary
HAH3DR600-S0E takes the open-loop Hall technology as the core, achieving a balance among wide range, high precision, and automotive-grade reliability, and is an ideal choice for medium-power current detection in new energy vehicles. Engineers need to focus on the range, thermal drift compensation, and PCB layout to achieve the best system performance.
