WMSIC Electronic Components

MPS MP5991GLU-Z

ModelMP5991GLU-Z
PackageLGA-32(5x5)
BrandMPS
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MPS MP5991GLU-Z
Type
MPS
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MPS
Electronic Component
MP5991GLU-Z
Electronic Component
1
Electronic Component
5mm
Package
LGA-32(5x5)
Electronic Component
Surge Protector
Electronic Component
0.12g
Electronic Component
5mm
FETType
Built-in FET
Electronic Component
1
Channel Count
1
Electronic Component
BM0257369627
Electronic Component
Electronic Component
Operating Temperature
40℃~+125℃
Operating Voltage
4V~16V

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

MP5991GLU-Z 产品概述

一、产品简介

MP5991GLU-Z 是一款面向热插拔(Hot‑Swap)应用的智能电源保护器件,由 MPS(Monolithic Power Systems)推出。器件内置功率 FET,单通道设计,工作电压范围 4V 至 16V,能够在高达 50A 的连续电流下工作,典型导通电阻 RDS(on) 为 1 mΩ。封装为 LGA-32 (5×5 mm) 表面贴装,器件尺寸 5 mm × 5 mm,工作温度范围 −40℃ 至 +125℃。内建软启动、欠压锁定、过流保护、短路保护和热保护,适合服务器、通信、电源模块以及工业电源分配等场景的输出级、负载上电与电源冗余管理。

二、主要特性

  • 内置低阻 MOSFET,单通道设计,RDS(on) ≈ 1 mΩ,支持高达 50A 输出电流能力
  • 工作电压:4V ~ 16V,适配常见 12V / 5V 系统及多种供电轨
  • 表面贴装 LGA-32 (5×5 mm) 小封装,便于高密度 PCB 布局
  • 完整保护集合:软启动、欠压锁定 (UVLO)、可配置过流保护 (OCP)、短路保护 (SCP)、热关断(热保护)
  • 工作温度范围宽:−40℃ ~ +125℃,满足工业级要求

三、工作原理与保护机制

MP5991GLU-Z 在上电时通过软启动电路控制内部 FET 以受控速率导通,从而限制浪涌电流并避免对后端负载或电容造成冲击。欠压锁定功能保证在输入电压不足时不导通,避免系统异常。过流保护与短路保护通过检测通道电流并在超过设定阈值时限流或快速断开,结合热保护可在器件过热时安全关断并在温度恢复后按策略重试,确保系统在异常工况下的可恢复性与可靠性。

四、关键指标与优势

  • 高效率:1 mΩ 低 RDS(on) 降低导通损耗,适合高电流应用,减少压降与发热
  • 高可靠性:多重保护逻辑配合热关断,提升系统容错能力
  • 集成度高:内置 FET 与保护模块,减少外部元件数,简化 BOM 与 PCB 面积
  • 灵活性强:宽工作电压范围与高电流能力,覆盖多种电源架构需求

五、典型应用场景

  • 服务器与数据中心电源插拔管理(板卡热插拔、电源冗余)
  • 通信设备与基站电源模块保护
  • 工业控制器与分布式电源管理系统
  • 电池供电或多电源切换系统的输出开关与保护
  • 高密度电源分配板(PDUs)与电源模块前端保护

六、封装与布板建议

为发挥器件的导热与低损耗优势,建议在 PCB 布局时:

  • 在器件底部或围绕大铜箔区域设计足够的散热铜箔,并配合多排过孔(thermal vias)将热量传导至内层与背面散热层。
  • 输入/输出电容尽量靠近器件电源引脚布局,减小寄生电感与环路面积。
  • 大电流走线使用宽铜线或多层并联铜迹,缩短高电流路径并保证电压降最小化。
  • 软启动与检测相关外部元件(如外置电容或设置电阻)按数据手册推荐放置,避免噪声耦合影响保护判定。

七、可靠性与设计注意事项

  • 在高电流与高温工况下,应评估器件功耗并做好热仿真与散热设计,必要时采取铜厚、散热片或底层散热策略。
  • 选择合适的输入旁路电容,平衡浪涌抑制与稳定性要求;对于频繁热插拔场景,可适当增加输入滤波与吸收元件。
  • 调试阶段关注过流/短路响应行为与热关断阈值,验证在不同故障下系统的恢复策略是否符合需求。

结语:MP5991GLU-Z 将低导通损耗与全面保护功能集成在小尺寸封装中,适合要求高电流、快速保护与可靠热插拔能力的应用场合。合理的 PCB 布局与热管理能够充分发挥其性能,显著提升系统的可靠性与可维护性。若需详细引脚定义、电气特性曲线与参考设计,请参阅 MPS 官方数据手册与参考电路。

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