ACS710: 120 kHz Bandwidth, High Voltage Isolation Current Sensor IC with Integrated Overcurrent Detection
The Allegro?ACS710 current sensor provides economical and precise means for current sensing applications in industrial, commercial, and communications systems. The device is offered in a all footprint surface mount package that allows easy implementation in customer applications.
The ACS710 consists of a precision linear Hall sensor integrated circuit with a copper conduction path located near the surface of the silicon die. Applied current flows through the copper conduction path, and the og output voltage from the Hall sensor linearly tracks the magnetic field generated by the applied current. The accuracy of the ACS710 is maximized with this patented packaging configuration because the Hall element is situated in extremely close proximity to the current to be measured.
High level immunity to current conductor dV/dt and stray electric fields, offered by Allegro proprietary integrated shield technology, guarantees low ripple at output and low offset drift in high-side, high voltage applications.
The voltage on the Overcurrent Input (VOC pin) allows pin will transition to a logic low state. Factory programming of the linear Hall sensor inside of the ACS710 results in exceptional accuracy in both og and dial output signals.customers to define an overcurrent fault threshold for the device. When the current flowing through the copper conduction path (between the IP+ and IP– pins) exceeds this threshold, the open drain Overcurrent Fault
The internal resistance of the copper path used for current sensing is tically 1 mΩ, for low power loss. Also, the current conduction path is electrically isolated from the low voltage sensor inputs and outputs. This allows the ACS710 family of sensors to be used in applications requiring electrical isolation, without the use of opto-isolators or other costly isolation techniques.
The ACS710 is provided in a all, surface mount SOIC16 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board embly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Pb-based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory
- 通过放大器和滤波器设计工艺实现高带宽行业的噪音性能
- 体积小，适用于有空间限制的应用。
- 1 mΩ 初级导体电阻产生的功率损耗小
- 高缘电压适合在火线应用
- 可供用户调整的过流故障标准
- 过流故障信号通常反映 <2 μ中的过流状况
- 由于 dV/dt 的高瞬变电压，集成屏幕事实上能消除电流导体中的电容耦合。
- 滤波管脚电容器能低带宽应用中的分辨率。
- 3 至 5.5 V, 单电源工作
- 厂家设定的灵敏度和静态输出电压
- 稳定斩波带来十分稳定的静态输出电压
- 电源电压的成比例输出
- 电动机控制与保护
- 负载管理与过流检测
- 功率变换与电池监控 /UPS 系统
ACS710: 带宽 120 kHz，高压缘电流传感器 IC，具有集成过流检测功能
Allegro? ACS710 电流传感器 IC 为工业、商业和通信系统中的电流传感应用提供经济实惠的解决方案。此设备配有小尺寸壁挂式包装，便于用户使用。
ACS710 设备有一个的线性霍尔传感器集成电路，且其铜制的电流路径靠近晶片的表面。外加电流流经铜制电流路径，而霍尔传感器 IC 的模拟输出电压则对外加电流产生的磁场进行线性跟踪。ACS710 的性由于这一包装设备实现了化，因为霍尔元件的位置与需要测量的电流十分接近。
Allegro 的集成屏幕技术提供的对电流导体 dV/dt 信号和杂散电场的高扰能力，高端、高电压应用中的低输出电压纹波和低偏置漂移。
过流电压输入(VOC 管脚)让用户能为此设备设定过流故障标准。当流经铜制电流路径 (介于 IP+ 和 IP– 管脚之间)的电流过了这一标准，断开的漏过流故障管脚会转为逻辑低状态。ACS710 内部线性霍尔传感器 IC 的写入只读程序使得模拟和数字输出信号都异常精准。
用于电应的典型铜制路径内电阻是 1 mΩ，功率耗损很小。而且，电流路径与低压传感器的输入和输出均为缘。这样，ACS710 传感器系列可用于那些要求电气缘却未使用光电缘器或其它昂贵缘技术的应用。
