1. One-sentence Description
The HLSR 16-P is a wide-range (±40A), high-bandwidth (400kHz) open-loop current sensor supporting dual power supplies of 3.3V/5V, designed for high-precision current detection in industrial drives and new energy systems.
2. Core Features
- Dual Power Supply Compatibility: Supports 3.3V/5V reference voltage input, adapting to low-power MCUs.
- Strong Magnetic Field Interference Resistance: Built-in three-layer shielding structure, with 8kV ESD (HBM model) protection.
- Ultra-Low Offset Current: Typical value of ±100mA reduces system calibration complexity.
- Wide-Temperature Stability: Operating temperature range of -40℃~105℃, with a temperature drift coefficient of only ±0.075mV/℃.
- Safety Certification: Compliant with UL 508/EN 61010 certifications, with a creepage distance of >8mm.
3. Core Technical Indicators
| Parameter | Symbol | Unit | Minimum Value | Typical Value | Maximum Value | Remarks |
| Bandwidth (-3dB) | BW | kHz | – | 400 | – | Fast transient response |
| Linearity Error | ε_L | % | ±0.5 | – | ±0.5 | Full range of 0~±40A |
| Noise Density | u_no | μV/√Hz | – | 11.3 | – | 100Hz~100kHz frequency band |
| Temperature Coefficient (Reference Voltage) | TCU_ref | ppm/℃ | -170 | – | 170 | Full-temperature-range stability guarantee |
| Hysteresis Error | I_OM | A | -0.25 | – | 0.25 | Reliable even under 10× overload |
4. The Story Behind the Chip
The development of HLSR 16-P focuses on addressing the challenges of complex electromagnetic environments in industrial drives and new energy systems:
- Innovative Shielding Technology: Uses nanocrystalline alloy core + three-layer shielding to suppress external magnetic field interference.
- Intelligent Calibration Algorithm: Integrates temperature compensation model to achieve ±0.5% linearity (including temperature drift).
- Green Process: Compliant with RoHS standards, with VO-grade flame-retardant housing to reduce environmental pollution.
5. Design Philosophy
- Flexibility Priority: Supports 3.3V SPI interface version (SP option) for low-power embedded systems.
- Thermal Management Optimization: Reserved heat dissipation space in PCB layout, with junction-to-ambient thermal resistance of only 20℃/W.
- Safety Redundancy Design: Dual-insulation structure supports applications at 3000m altitude.
- Usability Enhancement: Provides external reference voltage input to simplify ADC interface adaptation.
6. Application Scenarios
- Industrial Automation: Phase current sampling for frequency converters, closed-loop control for servo motors.
- New Energy Systems: MPPT tracking for photovoltaic inverters, charge-discharge management for energy storage batteries.
- Power Equipment: Energy metering for welding machines, UPS battery health monitoring.
- Laboratory Instruments: High-precision electronic loads, battery charge-discharge testing systems.
7. Unique Advantages
- Extreme Anti-Interference: 8kV ESD protection + 600Vrms isolation voltage, suitable for harsh electromagnetic environments.
- Wide Range Coverage: ±40A dynamic range supports large-current transient detection.
- Low-Power Benchmark: 19mA@5V (typical products usually >30mA).
- Ultra-Thin Design: 12mm height saves 50% PCB space (compared to traditional modules).
8. What Engineers Must Know for Selection
- Range Matching Principle: Ensure the measured current does not exceed ±40A (long-term overload may damage the core).
Key PCB Layout Points:
- Keep the main current path straight and away from switching power supply noise sources.
- Copper-clad grounding shielding for sensitive areas (pins 1-4).
- Use 1.6mm diameter through-holes to avoid accuracy drift due to mechanical stress.
Temperature Compensation Formula:
- (Compensation coefficients need adjustment according to the actual temperature range).
- Certification Compliance: Requires 3000Vrms/min insulation testing (UL 508 standard).
Conclusion: The HLSR 16-P, with its wide range, high noise immunity, and high integration, is an ideal choice for current detection in industrial drives and new energy systems. Engineers only need to focus on PCB layout details and temperature compensation strategies to quickly implement highly reliable solutions.
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
