Allegro MicroSystems, Inc. (Nasdaq: ALGM), recognized globally for its contributions in power and sensing technologies for motion control and energy-efficient systems, has announced the introduction of its high-bandwidth current sensors, the ACS37030 and ACS37032. These sensors are engineered to facilitate high-performance power conversion using Gallium Nitride (GaN) and Silicon Carbide (SiC) technologies across a variety of applications, including electrified vehicles, clean energy solutions, and data center infrastructures.
Enhancing Efficiency in Power Conversion
The advent of high-power-density GaN and SiC FET charging and power systems necessitates the use of high-speed, low-loss devices to maintain system efficiency and reliability. Traditional current-sensing mechanisms are challenged by limited operational ranges and additional physical dimensions that increase the overall design complexity and materials cost.
Innovative Dual Signal Path Approach
Addressing these constraints, Allegro introduces the ACS37030 and ACS37032 current sensors, employing a novel dual signal paths technique. This approach integrates low-frequency and DC current measurement via Hall-effect elements with high-frequency current data acquisition through an inductive coil, enabling rapid and efficient power conversion control and protection.
“The ACS37030/2 marks a significant advancement in current sensing, capable of meeting the quick response requirements of SiC and GaN systems while capturing essential low-frequency information for power conversion control,” explains Matt Hein, product line manager of current sensors at Allegro. This development allows for a reduction in system size and complexity when integrating GaN and SiC technologies.
Key Advantages for Power System Designers
Allegro’s latest current sensors offer significant benefits for the design and operation of high-frequency power electronic systems, including:
- Enhanced Efficiency and Thermal Management: Quick response times ensure critical protection and improved system efficiency by reducing energy loss and thermal output.
- Stable Control and Reduced Electromagnetic Interference: Features a 2% sensitivity error across temperature ranges, while the inductive coil enhances signal-to-noise ratio, mitigating noise and facilitating electromagnetic compatibility.
- Compact Design for System Reliability: The sensors are packaged in a durable, fused-lead SOIC-6 format, designed to endure the rigorous conditions of automotive and industrial settings, promoting system reliability and protection.
- Cost and Design Efficiency: The sensors simplify design processes, enabling cost-effective, high-power, high-frequency switching power conversion suitable for GaN and SiC devices.