HLSR 10-P
10A rated open-loop Hall effect current transducer with voltage output, ideal for industrial automation and motor drives
Product Overview
Description
The HLSR 10-P is a compact open-loop Hall effect current transducer designed for industrial applications requiring reliable current measurement up to 10A. It features a single supply voltage operation (3.3V or 5V), voltage output (0.5V to 4.5V centered at 2.5V), and excellent price-performance ratio.
Based on open-loop Hall effect technology, the HLSR series offers non-contact current measurement with galvanic isolation between primary and secondary circuits. The sensor provides 2.5kV isolation voltage and operates over a wide temperature range of -40°C to +105°C, making it suitable for demanding industrial environments.
The HLSR 10-P is particularly well-suited for applications such as motor drives, power supplies, lighting ballasts, and home appliances where cost-effective current monitoring is required. Its compact PCB-mount package allows for easy integration into space-constrained designs.
Product Series
HLSR
Primary Application
Current Transducers
Key Features
- High efficiency and reliability
- Optimized for industrial applications
- Comprehensive technical support
- Available from stock
Specifications
| Rated Current | 10A |
|---|---|
| Measurement Range | ±25A |
| Supply Voltage | 3.3V or 5V |
| Output Type | Voltage (0.5V-4.5V) |
| Accuracy | ±1% |
| Response Time | 3.5 μs |
| Bandwidth | 100 kHz |
| Isolation Voltage | 2.5 kV |
| Operating Temperature | -40°C to +105°C |
Applications
Motor Drives
Variable frequency drives and servo motor controls
Power Supplies
SMPS, UPS, and industrial power systems
Renewable Energy
Solar inverters and wind turbine converters
EV Charging
Electric vehicle charging stations
FAE Expert Insights
"The HLSR 10-P is an excellent choice for cost-sensitive applications requiring reliable current measurement. In our field experience, this sensor performs exceptionally well in motor drive applications where the 100kHz bandwidth adequately captures the fundamental current waveform. The 1% accuracy is sufficient for most protection and monitoring functions. Key advantages include the single supply operation which simplifies power supply design, and the ratiometric output that tracks supply voltage variations. One consideration is that being open-loop, it has higher temperature drift compared to closed-loop alternatives - approximately 0.5% per 10°C. For applications requiring higher precision, consider the CAS series closed-loop sensors. The HLSR 10-P is particularly popular in HVAC systems and small motor drives where cost is a primary concern."
Cost-effective solution for general industrial applications,Single supply operation simplifies power supply design,Ratiometric output tracks supply voltage variations
— Robert Liu, BeiLuo
Frequently Asked Questions
What is the output voltage range of HLSR 10-P?
The HLSR 10-P provides a ratiometric voltage output centered at Vcc/2 (2.5V for 5V supply, 1.65V for 3.3V supply). At zero current, output is Vcc/2. At +10A, output is approximately Vcc/2 + 2V (4.5V for 5V supply). At -10A, output is approximately Vcc/2 - 2V (0.5V for 5V supply). This ratiometric output ensures the sensor maintains accuracy even with supply voltage variations.
The ratiometric output simplifies ADC interface design. If your microcontroller ADC uses the same 5V or 3.3V reference as the sensor supply, the digital reading will be independent of actual supply voltage variations.
Can HLSR 10-P measure currents higher than 10A?
Yes, the HLSR 10-P can measure currents beyond its 10A rated value. The sensor has a linear measurement range of ±25A, though accuracy specifications are guaranteed only up to the rated 10A. Between 10A and 25A, the sensor continues to provide output but with reduced accuracy. Beyond ±25A, the output saturates. For continuous operation above 10A, consider the HLSR 20-P or HLSR 32-P models which offer higher rated current ranges.
For occasional peak currents up to 25A, HLSR 10-P can be used. For continuous operation above 10A or frequent peaks, select HLSR 20-P (20A rated) or HLSR 32-P (32A rated) for better accuracy and linearity.
What PCB layout considerations apply to HLSR 10-P?
For optimal HLSR 10-P performance: 1) Keep the current-carrying trace centered in the sensor aperture; 2) Maintain clearance between primary and secondary circuits per isolation requirements; 3) Place decoupling capacitors (100nF ceramic) close to supply pins; 4) Route output traces away from high-current paths to minimize interference; 5) Ensure adequate copper width for the measured current; 6) Consider thermal management for continuous high-current operation. The sensor footprint is compatible with standard PCB assembly processes.
Use wide copper traces (minimum 2mm for 10A) for the current path through the sensor. Place the sensor away from high-frequency switching components to minimize EMI coupling. Add a 100nF ceramic capacitor between Vcc and GND as close to the sensor as possible.