WMSIC Electronic Components

BELLING BL7141WH

ModelBL7141WH
PackageSOIC-16
BrandBELLING
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BELLING BL7141WH
Type
BELLING
Minimum package
1500 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BELLING
Electronic Component
BL7141WH
Electronic Component
1
Package
SOIC-16
Electronic Component
Isolated
Electronic Component
0.55g
Electronic Component
1
CMTI(kV/us)
100kV/us
Features
Output; Signal Isolated
Electronic Component
BM0228055588
Operating Temperature
40℃~+125℃
Output
Level
Channel Count
1
Channel Count
3
(tpd)
11ns

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

BL7141WH 数字隔离器(SOIC-16)产品概述

BL7141WH 是 BELLING(贝岭)推出的一款高可靠性、低功耗的数字隔离器,采用 SOIC-16 封装,面向工业控制、通信接口及电源隔离等场景。器件提供 3 条正向通道与 1 条反向通道,支持高达 100 Mbps 的数据速率,具有 5 kVrms 的强化隔离能力和 100 kV/µs 的高共模抑制能力,工作温度覆盖 -40℃ 至 +125℃,适用于恶劣环境下的高抗扰应用。

一、主要功能与规格要点

  • 通道方向:正向(A→B)3 路,反向(B→A)1 路
  • 最大数据速率:100 Mbps(差分或单端数字信号取决于系统设计)
  • 默认输出:高电平(器件具备默认高电平逻辑状态,便于失效或上电异常时系统保持安全态)
  • 隔离电压(Vrms):5000 Vrms(通常用于评价沟通隔离强度)
  • 共模瞬态抑制(CMTI):100 kV/µs(对高 dv/dt 环境具有良好抗扰能力)
  • 工作温度范围:-40℃ ~ +125℃
  • 工作电压范围:VCCA = 2.35V ~ 5.5V,VCCB = 2.35V ~ 5.5V(两侧独立供电,支持广泛逻辑电平)
  • 传播延迟(tpd):典型 11 ns(单向延迟,可用于时序预算)
  • 封装:SOIC-16
  • 品牌:BELLING(贝岭)

二、功能描述与优点

BL7141WH 提供隔离的数字信号传输通道,将两侧系统电气隔离,消除地环路、抑制共模干扰并保护低电压侧免受高压回路影响。器件的主要优势包括:

  • 高隔离等级(5 kVrms),适合需要电气安全隔离的应用场合;
  • 强抗共模瞬变(100 kV/µs),在开关电源、逆变器等高 dv/dt 环境下能稳定工作;
  • 宽供电电压范围,兼容 3.3V、5V 等常见逻辑体系,便于系统集成;
  • 默认输出为高电平,有助于在上电或异常时将远端保持在确定的逻辑状态(便于故障安全设计);
  • SOIC-16 小封装,方便 PCB 布局与批量生产。

三、典型应用场景

  • 工业现场总线与数字隔离接口(如从 PLC 到传感器/变送器的隔离)
  • 电源与逆变器控制回路(隔离 PWM/控制信号)
  • 伺服驱动、电机控制器中的控制信号隔离
  • 通信接口隔离(UART、SPI、I²C 的信号隔离,需注意数据率与时序)
  • 医疗设备中低压侧与高压侧的信号隔离(需结合系统安全认证要求评估)

四、设计注意事项与推荐实践

  • 供电与退耦:在 VCCA 与 VCCB 每侧靠近器件放置 0.1 µF 陶瓷退耦电容,建议再并联 1 µF~10 µF 的旁路电容以改善低频性能。
  • 接地与走线:两侧接地应分别处理,不要在 PCB 上短接。跨越隔离区的走线应通过连接器或满足规定的爬电/间隙距离。
  • 布局:数字信号线尽量短且成对布线,提高信号完整性;输入端可考虑串联小阻(10Ω~100Ω)抑制反射。
  • 时序与数据率:器件典型传播延迟 11 ns;在接近最大 100 Mbps 的速率下,应为系统预留时钟/建立-保持时间裕量,并注意串扰与抖动管理。
  • 上电排序与失效保护:由于器件默认输出为高电平,上电序列或供电异常时输出态可预测。但在系统设计中仍应考虑上电时序与外部拉阻,以避免产生意外逻辑动作。
  • 隔离距离与安全规范:为了实现额定 5 kVrms 隔离性能,PCB 设计需满足相应的爬电距离与间隙要求,并参考目标市场(如工业或医疗)的安全标准进行系统级验证。

五、可靠性与环境适应

BL7141WH 的工作温度覆盖宽广的 -40℃ 至 +125℃,适合室温及高温工业环境。器件对共模瞬变的高耐受能力(100 kV/µs)使其在开关频繁、噪声强的电力电子系统中表现稳健。为保证长期可靠性,建议在设计中考虑热管理(合理分配层间铜和散热路径)和合适的 PCB 空间隔离。

六、封装与选型提示

BL7141WH 提供 SOIC-16 封装,利于常规贴片工艺批量生产。在选型时请确认:所需通道方向与数量(3:1 配置)、最大传输速率是否满足应用、工作电压范围与系统逻辑电平兼容,以及是否需要器件的默认高电平行为以满足系统故障安全策略。

如需将 BL7141WH 集成到具体系统中,可根据上述设计建议进行验证样片测试,重点关注高速信号完整性、隔离电压测试与共模抑制能力在真实环境下的表现。若需要引脚分配或应用参考电路图,可进一步提供具体的 PCB 约束与接口需求以便给出更有针对性的建议。

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