Allegro Microsystems announced the launch of the ACS37002 family of advanced Hall-effect current sensors. The ACS37002 has 400kHz sensing bandwidth up to 180 A with low offset and better than 1% typical total accuracy over the full -40°C to 150°C automotive temperature range. The high-speed operation allows customers to operate at higher switching frequencies and […]
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Coreless current sensors handle 1 kA with no magnetic shield
Allegro MicroSystems announced the launch of the world’s first standalone Hall-based coreless current sensor, the ACS37612. This device measures currents from 200A to >1000A flowing through a PCB or a busbar with a typical accuracy of 1% — and without requiring a magnetic concentrator core or a shield. The differential Hall-elements used to measure the magnetic […]
Current sensors sport ultra-low series resistance, 5-kV isolation rating
Allegro MicroSystems has announced the release of the brand-new custom SOIC16W package, named “MC”, which marks a leap forward in the industry’s current sensing capabilities for power dense applications that require high isolation with low power loss. This new package has an ultra-low 265uOhm series resistance—more than 2.5 times lower than existing SOIC16W solutions—while delivering […]
Ultra-low current, low EMI DC/DC regulator optimized for keep-alive supply apps
Allegro MicroSystems announced the launch of the ARG81800—a robust, ultra-low Iq, low EMI DC/DC regulator ideal for keep-alive supply applications. The device sets a new standard, introducing features that help engineers easily achieve tightening OEM standards, such as: Ultra-low quiescent current mode 150°C operating temperature – for demanding automotive or industrial operating conditions Pin open/short […]
Three-phase BLDC driver integrates power loss brake
Allegro MicroSystems announced the launch of the world’s first three-phase BLDC driver IC with integrated power loss brake (PLB) features. The A89331 code-free, sinusoidal sensorless fan driver is designed to improve thermal efficiency, which reduces energy use and data center costs. The new PLB features also improve safety and reduce the bill of materials (BoM) […]
Surface-mount current sensors handle up to 400 A
Allegro MicroSystems announced significant ease-of-use enhancements to its popular high current fully integrated ACS772/3 current sensor “CB” package family. These industry-leading, automotive-grade high voltage isolation current sensors already provide economical and precise solutions for both AC and DC current sensing up to 400A. Building on that leadership and deep customer-understanding, Allegro’s new surface-mount leadform option for […]
Code-free FOC BLDC motor drivers target fan, cooling apps
Allegro MicroSystems announced the launch of the company’s QuietMotion family. This family consists of the first-to-market Field Oriented Control (FOC) brushless DC (BLDC) electric motor controllers that are customer code-free. The devices are designed to provide reliable and efficient low audible noise performance while reducing design cycle time. Whereas most FOC BLDC drivers require software developers to […]
Top power electronics stories of 2017
Here are the power electronics features that got the most interest from readers in 2017. Teardown: Inside Ikea’s smart LED bulb As smart LED bulbs go, this one is pretty simple. It doesn’t incorporate any sort of smartphone app and can’t be controlled over the Internet, like some other smart bulbs […]
