Small high-bandwidth current sensors boost efficiency
Allegro MicroSystems has launched its new high-bandwidth current sensors, the ACS37030 and the ACS37032, which enable high-performance power conversion with GaN and SiC technologies in electrified vehicles, clean energy systems and data center applications.
Current high-power-density GaN and SiC FET charging and power systems demand high-speed, low-loss devices to ensure efficiency and reliability. Existing current sensors have limited operating ranges, are relatively bulky and heavy, resulting in designs that require additional components and larger bills of materials (BOMs).
Allegro has introduced two high-bandwidth current sensors — the ACS37030 and ACS37032 — designed to provide efficiency and high-performance with reduced design time and board space. They employ a dual signal paths approach, with one path capturing low-frequency and DC current using Hall-effect elements and the other path capturing high-frequency current data through an inductive coil.
“Our ACS37030/2 is the first market solution capable of responding fast enough for high-speed SiC and GaN protection while also providing low-frequency content for power-conversion control,” said Matt Hein, product line manager of current sensors at Allegro. “Designers can now minimize their system footprint when using GaN and SiC architectures.”
The compact design, efficiency improvements and cost reductions of the ACS37030 and ACS37032 current sensors make them suitable for high frequency switching in power electronic systems.
The current sensors enable efficient and rapid management of high-switching frequencies and thermal conditions for high voltages and currents. They deliver fast response times that provide critical protection and higher efficiency through minimized energy loss and thermal dissipation.
The current sensors feature a 2% sensitivity error over temperature, while the inductive coil properties increase the signal-to-noise ratio (SNR) as frequency increases, minimizing noise and simplifying electromagnetic compatibility. His enables stable and safe control while reducing electromagnetic interference.
The ACS37030 and ACS37032 are offered in a compact and efficient fused-lead SOIC-6 package that can withstand harsh automotive and industrial environments for reliability and protection.
Balancing cost considerations while minimizing design complexity, the current sensors simplify design and facilitate easy-to-design, cost-optimized, high-power, high-frequency switching power conversion for GaN and SiC devices.
www.allegromicro.com/en/acs37030-2
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