WMSIC Electronic Components

ALLEGRO CT426-HSN830DR CT426

ModelCT426-HSN830DR
PackageSOIC-8
BrandALLEGRO
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO CT426-HSN830DR
Type
ALLEGRO
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
CT426-HSN830DR
Electronic Component
1
Package
SOIC-8
Electronic Component
1MHz
Electronic Component
Current Sensor
Electronic Component
0.322g
Electronic Component
66.7mV/A
Electronic Component
1
Features
TMR
Electronic Component
BM0259731957
Operating Temperature
40℃~+125℃
Operating Voltage
3V~3.6V
Current Resistor
1mΩ
(tr)
300ns

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CT426-HSN830DR 产品概述

CT426-HSN830DR 是 ALLEGRO(美国埃戈罗)品牌的一款高性能隔离电流检测器件,采用 SOIC-8 封装,面向需要高带宽、低插入阻抗和高隔离安全性的直流电流检测应用。器件针对最高 30A 的单向电流测量进行了优化,提供稳定的电压输出以便与 3.3V 系统直接接口。

一、主要规格要点

  • 测量范围:最高 30A(单向,不支持双向检测)
  • 工作电压:3.3V(典型供电)
  • 隔离电压(Vrms):3500 Vrms(高压隔离能力,满足一些工业与安全应用要求)
  • 灵敏度:66.7 mV/A(输出与电流成线性比例,30A 时输出典型增量约 2.0V)
  • 工作温度范围:-40 ℃ ~ +125 ℃(宽温区可靠工作)
  • 带宽:1 MHz(适合快速瞬态与脉冲测量)
  • 电流端电阻(插入电阻):1 mΩ(极低压降,降低功率损耗与热量)
  • 响应时间 (tr):300 ns(快速响应,有利于过流保护与瞬态检测)
  • 双向检测:不支持(仅用于测量单极性电流)

二、产品特性与优势

  • 高隔离等级(3500Vrms)保证了被测回路与控制/测量端之间的安全电气隔离,适用于电源模块、逆变器、电池系统等需绝缘保护的场景。
  • 低插入电阻(1 mΩ)在高电流条件下显著降低功耗与自发热,适合长期高电流工作。
  • 1MHz 带宽与 300ns 的响应时间,使器件对快速电流脉冲和瞬态事件具有良好的追踪能力,可用于开关电源瞬态监测与电机驱动的电流检测。
  • 66.7mV/A 的灵敏度便于与 ADC 或 MCU 的模拟输入直接配合,30A 满量程对应约 2.0V 的输出摆幅,留有与 3.3V 电源匹配的余量。

三、典型应用场景

  • 开关电源与 DC–DC 转换器的电流监控与过流保护
  • 电机驱动与电机闭环控制中的电流检测(需注意单向限制)
  • 服务器电源、UPS、逆变器的电流监测与故障检测
  • 电池供电设备中对放电电流的检测(若需双向充放电测量应另寻双向方案)
  • 工业控制和功率管理系统,对高带宽和高隔离要求的场合

四、选型与设计注意事项

  • 单向测量限制:若系统需要测量正负方向电流(充放电场景、双向功率流),CT426-HSN830DR 不适用,应选用支持双向的传感器或用双电路设计。
  • 输出范围与 ADC 匹配:30A 对应约 2.0V 的输出增量,建议在系统中留足模拟输入范围并做好偏置/放大与输入滤波设计,防止高频噪声影响采样。
  • PCB 布局与热管理:尽管插入电阻低,但在高电流下仍会产生热量,建议布设宽铜箔、合理走线并避开敏感模拟元件。电源去耦必须靠近 VCC 引脚放置低 ESR 电容。
  • 隔离与安规:器件本身具备 3500Vrms 隔离能力,但整体系统需保证爬电距离与固有绝缘满足最终应用的安全标准和认证要求。
  • 带宽与滤波折中:1MHz 带宽提供快速响应能力,但若系统中存在高频噪声,可在输出端适当加入 RC 滤波以兼顾采样稳定性与速度需求。

五、封装与可靠性

  • 封装:SOIC-8 便于自动化贴装与 PCB 布局,适合嵌入式与模块化设计。
  • 温度特性:器件工作温度范围宽(-40 ℃ 到 +125 ℃),在工业环境下具有良好的可靠性表现。

总结:CT426-HSN830DR 以其高隔离电压、低电阻、高带宽与快速响应的组合,适合对单向大电流测量要求较高且需电气隔离的场合。设计时需注意其单向测量限制及与系统模拟前端的匹配,以发挥器件在准确性与动态响应上的优势。若需进一步原理图连接建议或与特定 MCU/ADC 的接口优化,可提供系统细节以便给出针对性的参考设计。

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