Allegro's New ACS37800 IC Integrates Power, Voltage, and Current Monitoring with Reinforced Isolation

Allegro's New ACS37800 IC Integrates Power, Voltage, and Current Monitoring with Reinforced Isolation

1月06日，2021年

Single-chip solution simplifies industrial and home automation applications seeking to reduce board space and optimize energy efficiency

Allegro MicroSystems, Inc. (“Allegro”) (Nasdaq: ALGM), a global leader in sensing and power, announced the launch of the ACS37800, a Hall-effect power monitoring IC for single-phase AC and DC solutions in a small PCB footprint. Another 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.

Extensive integration and power triangle calculations simplify BOM and shrink time to market

Offered in an efficient SOIC16 footprint, the ACS37800further 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 integrated517 Vrmsreinforced isolation enables current sensing without expensiveopto-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).

ACS37800通过计算诸如主动，无功和表观电源的参数以及电流，电压或电源的瞬时和均方根值来简化公共功率三角测量。此外，ACS37800能够在一分钟内具有许多瞬时测量的这些参数，避免在波形不对称时的不准确性。这些功能可降低对微控制器单元（MCU）资源的依赖性，以便进行关键计算。raybet软件

The right balance of programmability for a broad range of applications

Thanks to impressive levels of flexibility and configurability, users can program the ACS37800 to fit a variety of unique application needs. The device allows designers to choose from a factory-programmed I2C or SPI interface, depending on whether the user prefers low noise or multiple addressing—and in I2C mode, it provides zero-crossing detection pinout, making LED dimming control easy. Users can also program thresholds for under/overvoltage, current/voltage gain and offset, and overcurrent trip point via EEPROM, allowing them to optimize their system from ±30 A to ±180 A and from –40°C to 125°C.

Combining Allegro's factory programming of sensitivity and offset with vast user programmability allows designers to balance between time-to-market and customization in the increasingly competitive energy-efficient applications, such as:

• Smart lighting
• Smart appliances and smart plugs
• 工业电机控制
• Server and telecom power supplies

Allegro在开发市场领先的电流传感器技术方面拥有二十年的经验，提供可靠的大厅和巨大的磁阻（GMR）磁电流传感器，符合工业和汽车客户的不断发展需求。

关于数据表以及关于Allegro创新电流传感器系列的更多详细信息，包括ACS37800， 请拜访allegromicro.com/currentsensors. Contact your local sales office for more information and to request samples today.

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