ACS71020数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

The ACS71020 power monitoring IC greatly simplifies the addition of power monitoring to any AC/DC powered device. By making use of Allegro’s Hall-effect-based, galvanically isolated integrated current sensor technology, reinforced isolation can be achieved. The sensor can be powered from the same supply as the MCU, eliminating the need for multiple power supplies and digital isolation ICs.

The isolated current measurement is done by detecting the magnetic field from the integrated conductor, eliminating the need for external sense resistors, current transformers, or Rogowski coils. Two Hall plates are used for this measurement to deferentially sense the field, thus eliminating errors due to stray magnetic fields. Multiple parameters like bandwidth, averaging time, and fault levels are user-programmable.

The sensor features all key power measurements, which can be read out through I2C or SPI, as well as dedicated pins for voltage zero crossing (suitable for light-dimming applications)and fast overcurrent fault (for short-circuit detection). As the sensor is isolated, these pins can be easily accessed by the MCU without additional isolation to each signal. These two pins can also be configured to flag a VRMS under/overvoltage.

The ACS71020 is provided in a small, low-profile, surface-mount SOIC16 wide-body package. The ACS71020 is lead (Pb) free, and is fully calibrated prior to shipment from the factory. Furthercustomer calibration in application can improve accuracy.

特性 Features

• Accurate power monitoring of AC/DC applications
• Reinforced isolation up to 517 VRMS in a single package eliminates the need for dual isolated supplies
• Active, reactive, and apparent power measurements, and power factor
• RMS and instantaneous voltage and current measurements
• 0.85 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
• Dedicated voltage zero crossing pin
• Overcurrent fault output pin
• Hall-effect-based current measurement with common mode stray field rejection
• User-programmable VRMS under/overvoltage pin
• 1 kHz bandwidth
• Current-sensing range from 0 to 90 A
• I2C or SPI communication
• User-programmable through EEPROM registers
• 16-bit voltage and current ADCs

简介

ACS71020属于集成电路（IC）的电源管理-专用。由制造生产的ACS71020电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。