0～50 A 導線内蔵電流センサー IC
当社の全内蔵型高絶縁電流センサー ソリューション ファミリーでは、外部絶縁コンポーネントをまったく必要とせずに、非常に低抵抗で正確に測定できます。
Allegro 独自のパッケージングでは、コアレス パッケージ設計で優れた磁気結合を形成するフリップ チップ技術を使用しています。また、当社のソリューションは、最大 4800 VRMS のガルバニック絶縁を提供します。こうした低プロファイルの小型フォーム ファクタ パッケージは、センサー抵抗器オペ アンプまたは大きな変流器構成の基板領域を削減するために理想的です。
電流センサー IC 0～50 A選択ガイド
Documentation & Resources
Technical Article
New 400 kHz Current Sensors Enable More Sustainable Designs in Switch-Mode Power Designs
Really Cool. Really Efficient. New 400 kHz current sensors enable more sustainable designs in switch-mode power designs.
Technical Article
Solar Energy Systems – New Market Trends in Current Sensing
P0103 - As solar installations grow larger and more ambitious by the day, new trends in current sensing are emerging for this expanding energy market.
Application Note
An Effective Method for Characterizing System Bandwidth in Complex Current Sensor Applications
This application note describes multiple methods for measuring
and characterizing system bandwidth, with a focus on
the impulse response method. Allegro’s ACS720 is the perfect device to validate the test methods outlined here.
FAQ
Current Sensors FAQ
Have questions about our industry-leading current sensor ICs? Check out our most frequently asked questions and answers.
Application Note
Achieving Closed-Loop Accuracy in Open-Loop Current Sensors
Closed-loop current sensing technology is employed in many industrial and automotive applications for accurate current sensing. Allegro MicroSystems has developed magnetic-based current sensor IC solutions that achieve near closed-loop accuracy using an open-loop topology.
Technical Article
Magnetic Current Sensing Drives Vehicle Electrification
Modern cars have become increasingly power hungry. Even the “least electrified” vehicles include advanced electronics for infotainment, safety, and engine control. Fully electric vehicles further add high-voltage power domains to charge and drive. Each of these systems shares the need for power monitoring and control, and this is where current sensors are used.
Application Note
New Approaches to High-Efficiency Current Sensing: Integrated Hall Sensor ICs Save Power and Space
AN296100: Allegro current sensor ICs allow design engineers to use Hall-effect based current sensor ICs in new applications where increased energy efficiency or new operating features are required. Wherever current sensing is needed, an integrated Hall-effect IC can provide a solution.
Application Note
Differential Current Sensing with the 1 MHz Bandwidth ACS733
AN296154 - This application note describes the use of the new highly isolated, high bandwidth ACS733 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and gives an overview of its features and advantages over a highspeed current transformer (CT) current sensing solution.
Application Note
A Micro-Packaged Linear Current Sensor IC
Traditionally, current sensing has been accomplished with sense resistors or current transformers that can take up a large PCB area. Sense resistor values from 10 to 50 mΩ can burn a significant amount of power at higher currents.
Application Note
Allegro MicroSystems - Managing External Magnetic Field Interference When Using ACS71x Current Sensor ICs
The highly compact Hall effect current sensor ICs without concentrators that are now available make it possible to enhance performance of small-current differentiation by simple layout steps and shielding the device from extraneous magnetic flux along its primary sensing axis.
Application Note
Improved Performance and Features of Allegro’s Next Generation, High Power Density CB Package Current Sensors
This application note will describe the use of the new high current ACS772 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and will give an overview
of its features and improvements from previous Allegro high-current sensors.
Technical Article
Current Sensing For Renewable Energy
In grid-tied photovoltaic systems, designers must focus on minimizing cost per watt to deliver the best possible return on investment.
Application Note
Hall Effect Current Sensing in Electric and Hybrid Vehicles
Improved energy efficiency in HEVs and EVs can be attained by using electrically-driven actuators instead of belt-driven and hydraulic actuators. For instance, in traditional internal combustion engines a fan belt drives the cooling fan, which operates continuously while the engine is running.
Application Note
Using Allegro Current Sensor ICs in Current Divider Configurations for Extended Measurement Range
This application note describes simple methods for increasing the measurable current range. These methods involve splitting the path of the current being sensed. Various options of devices and circuits are described.
Application Note
Increased Electric Motor Content in HEV Subsystems Require Current Sensing
To control the drive train in HEV and full EV vehicles, it is well-known that current sensing is required particularly in starter generator and main electric drive motor generator applications.