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Allegro Introduces New Hall Effect Monitoring IC ACS37800

Allegro MicroSystems has released the ACS37800, a Hall-effect power monitoring IC for single-phase AC and DC solutions in a small PCB footprint.

AllegroAnother industry-first innovation, Allegro’s ACS37800 is an integrated power monitoring chip that allows simultaneous measurement of power, voltage, and current for AC and DC signals with an isolation rating of up to 1480 Vpk in a small SOIC16W package, reducing the solution BOM size, cost, and complexity.

“Our newest power monitoring chip is a gamechanger for IoT devices, smart lighting, data centers, and telecom applications, in particular,” says Shaun Milano, Business Unit Director for Current Sensors at Allegro. “We’ve improved on our first-generation integrated solution by adding the ability to measure voltage, current and power in AC as well as DC at the same time – and with reinforced isolation, our customers can eliminate many expensive components on their PCBs. The ACS37800 dramatically simplifies measuring power in a unique single-chip solution.”

The new ACS37800 allows devices to easily track power consumption and to optimize energy use by detecting reduced power efficiency for predictive maintenance. This makes the ACS37800 ideal for motor control, building automation, and a variety of green industrial applications.

Offered in an efficient SOIC16 footprint, the ACS37800 IC further reduces PCB size and significantly reduces bill of materials (BOM) cost and complexity by eliminating the need for many components that competitive solutions require in similar conditions.

For example, the integrated 517 Vrms reinforced isolation enables current sensing without expensive opto-isolators, Rogowski coils, oversized current transformers, isolated operational amplifiers, or shunt resistors.

Thanks to its onboard regulator, the ACS37800 can be powered from the same voltage supply as the system microprocessor (5 V or 3.3 V).

The ACS37800 IC simplifies common power triangle measurements by calculating parameters such as the active, reactive, and apparent power as well as instantaneous and RMS values of the current, voltage, or power.

Furthermore, the ACS37800 can average these parameters with many instantaneous measurements over one minute, avoiding inaccuracies when waveforms are asymmetric. These features reduce the reliance on microcontroller unit (MCU) resources for critical calculations.

Allegro has two decades of experience in developing market-leading current sensor technology, offering reliable Hall-based and giant magnetoresistance (GMR) magnetic current sensors that meet industrial and automotive customers’ evolving needs.

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Aishwarya Saxena

A book geek, with creative mind, an electronics degree, and zealous for writing.Creativity is the one thing in her opinion which drove her to enter into editing field. Allured towards south Indian cuisine and culture, love to discover new cultures and their customs. Relishes in discovering new music genres.

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