Allegro introduces a 400kHz current sensor with a rated isolation voltage of 5kV with increased accuracy

Allegro, a global leader in power and sensing solutions for motion control and energy saving systems, announced the introduction of the ACS37002 series of advanced Hall Effect current sensors capable of supporting up to 180A and 400kHz bandwidth with low offset voltages. And the typical total accuracy is better than 1% in the whole range of -40 ~ 150 ° C automotive temperature.

The high-speed operation capability of the new product allows customers to choose higher switching frequencies while supporting more efficient SiC and GaN switching platforms. The ACS37002 series also uses differential sensing technology for high immunity to external magnetic fields and offers three surface mount options optimized for low noise, high isolation or the lowest internal power consumption in its class.

Bob Briano, product line manager at Allegro, said: "With the introduction of the ACS37002 series sensors, the industry no longer needs to compromise between speed, accuracy and power density. The new product family comes in an easy-to-use, surface-mount package and meets new performance standards that design engineers will really value."

The ACS37002 is ideal for demanding applications such as the green energy industry and electric vehicles, including:

● Solar inverter;

● Car charger power factor correction;

● DC/DC converter loop control;

● Various high voltage inverters for electric vehicles.

With outstanding electrical performance, advanced packaging and factory calibration capabilities, the ACS37002 is a complete solution for many challenging applications. Allegro factory programming and its plug-and-play capabilities allow designers to accelerate time-to-market in the highly competitive green energy and energy-efficient vehicle market.

High performance, simplified and fast switching power converter system design for ACS37002

In most power conversion applications, faster switching speeds increase efficiency, so the industry is increasingly adopting SiC and GaN switches to achieve higher speeds. With the release of the ACS37002 product family, Allegro is responding directly to this market trend by maximizing the speed of Hall sensors. High-speed current sensors with higher accuracy and DC stability enable tighter control of the motor or power converter control loop, which improves the overall efficiency of the system. While enabling faster switching, the ACS37002 also helps designers reduce the overall system size.

Briano added: "With the increasing energy efficiency trend in industries such as automotive and green energy, more and more designers are adopting SiC and GaN designs, and the 400kHz bandwidth of the ACS37002 product family enables designers to accurately sense these faster switching currents."

Multiple integrated functions simplify design and reduce system size

The ACS37002 is highly integrated and factory-calibrated to help designers reduce system size and accelerate time-to-market by shortening design cycles. The ACS37002 integrates a variety of features, including:

● Fast overcurrent fault detection to ensure system reliability;

● Reference output for accuracy in high-noise environments;

● The optional sensitivity setting of 4 pins in a single component reduces the number of parts in stock for the design platform.

● The ACS37002 is available in three different SOICW-16 packages: