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ALLEGRO ACS772ECB-300B-PFF-T ACS772ECB
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ALLEGRO ACS772ECB-300B-PFF-T
- Type
- ALLEGRO
- Minimum package
- 34 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ALLEGRO
- Electronic Component
- ACS772ECB-300B-PFF-T
- Electronic Component
- 1
- Package
- PFF
- Electronic Component
- 200kHz
- Electronic Component
- Current Sensor
- Electronic Component
- 6.306g
- Electronic Component
- 6.66mV/A
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0257710282
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 5V
- (tr)
- 2.5us
- Current
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ACS772ECB-300B-PFF-T 产品概述
一、产品简介
ACS772ECB-300B-PFF-T 是 Allegro（美国埃戈罗）出品的一款开环霍尔电流传感器，针对 AC/DC 双向大电流检测设计，工作电压 5V，5 引脚 PFF 封装，符合汽车级 AEC‑Q100 规范。器件内部通过霍尔元件测量导体产生的磁场，实现电气隔离的电流到电压转换，适合需要高隔离和快速响应的电流监测场景。
二、主要参数
- 电流测量范围：±300A（双向测量）
- 工作电压：5V
- 灵敏度：6.66 mV/A
- 隔离电压（Vrms）：4800 Vrms
- 带宽：200 kHz
- 响应时间（tr）：2.5 µs
- 工作温度：-40℃ ～ +85℃
- 封装：PFF，5 引脚，CB‑PFF 管带包装
- 认证：汽车级 AEC‑Q100
三、工作原理与输出特性
器件采用开环霍尔效应测量，输出为与被测电流成线性比例的模拟电压。对于 5V 供电，静态零电流输出约为 VCC/2（约 2.5V）；按灵敏度 6.66 mV/A 计算，±300A 对应输出摆幅约 ±1.998V，理论输出范围约 0.50V ～ 4.50V，便于直接连接 MCU/ADC 采集。200 kHz 带宽与 2.5 µs 的快速响应适合处理开关变换和快速瞬态。
四、典型应用
- 电动车与混合动力系统的电机电流监测与控制
- 逆变器、变频器和伺服驱动的电流反馈环路
- 电池管理系统（BMS）与高能量储能装置的电流监测
- 开关电源、UPS、逆变焊接等高电流环境的保护与计量
- 汽车电子领域的电流保护、故障检测与诊断
五、设计与布局建议
- 供电端旁近距放置 0.1 µF 陶瓷去耦电容，并并联较大容量的电解/钽电容以抑制低频纹波；去耦元件应尽量靠近 VCC 与 GND 引脚。
- 输出到 ADC 的路径宜短且屏蔽，必要时在输出端加小 RC 低通（根据系统带宽需要选择截止频率），以抑制高频噪声与采样尖峰。
- PCB 布局避免大环路面积和强磁源邻近传感器敏感区，保持传感器周围的铜层连续，减少外界磁干扰。
- 满功率或长时间大电流应用时，应参考原厂热阻和温升曲线，评估导体及封装的热管理，必要时采用散热措施或降低连续工作电流。
六、优势与注意事项
优势：高隔离电压（4800 Vrms）、宽带宽（200 kHz）与快速响应（2.5 µs）使其既适用于动态控制又能保证人员与电路安全；5V 供电和输出范围兼容多数 MCU/ADC 输入；AEC‑Q100 认证满足车规可靠性要求。
注意事项：虽然开环方案响应快、成本较低，但相对闭环可能在线性度和温漂上有不同表现，具体精度与偏置请参考官方典型曲线并在系统中做校准；高噪声或强磁场环境需要额外的滤波与屏蔽设计。
七、封装与配套
PFF 5 引脚封装便于在自动化装配和管带（CB‑PFF）环境中使用，兼容批量生产。产品适合需要汽车级可靠性与工业级耐受性的电流测量与保护系统。若需更具体的机械尺寸、引脚定义与典型电路图，请参阅 Allegro 官方数据手册以获得完整规范与测试条件。
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