WMSIC Electronic Components

NCE NCE4963

ModelNCE4963
PackageSOP-8
BrandNCE
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+

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Technical data

Product details

20 specifications

Core information

Product name
NCE NCE4963
Type
NCE
Unit
Electronic Component
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
NCE
Electronic Component
NCE4963
Electronic Component
1
Package
SOP-8
Electronic Component
2 P
Electronic Component
MOSFET
Electronic Component
0.2g
Electronic Component
1
Electronic Component
BM0227782043
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
3W
Electronic Component
Electronic Component
Electronic Component
4000
Voltage(Vdss)
20V

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

NCE4963 产品概述

一、产品简介

NCE4963 是新洁能(NCE)推出的一款双通道 P 沟道功率 MOSFET,封装为 SOP-8。器件针对低压高电流场合的高端开关与保护电路优化设计,适用于需要高效开关、低导通损耗的应用。每个通道的设计电压与电流能力满足常见通信、电源管理和汽车电子的要求。

二、主要电气参数

  • 漏源电压 (Vdss):20 V
  • 连续漏极电流 (Id):7 A(单通道)
  • 导通电阻 (RDS(on)):27 mΩ @ Vgs = 4.5 V
  • 耗散功率 (Pd):3 W(温度和散热条件相关)
  • 阈值电压 (Vgs(th)):约 1.4 V(典型值)
  • 总栅极电荷 (Qg):10 nC
  • 输入电容 (Ciss):1.21 nF @ 10 V
  • 反向传输电容 (Crss):290 pF
  • 工作温度范围:-55 ℃ 至 +150 ℃
  • 封装:SOP-8(双 P 沟道)

三、关键特性与优势

  • 低导通电阻:27 mΩ 的低 RDS(on) 在大电流下显著降低导通损耗,提高系统效率与热裕量。
  • 适合高端开关:P 沟道器件便于实现高侧开关,减少额外驱动器件,简化电路设计。
  • 开关特性平衡:Qg 约 10 nC 与 Ciss/Crss 的组合,使得在合理驱动条件下具备较好的开关速度与控制性,便于在功率管理电路中使用。
  • 宽温度适应性:-55 ℃~+150 ℃ 的工作温度范围满足工业级及部分车规级环境要求(需结合系统热设计确认)。

四、典型应用场景

  • 低压高端开关:5 V/12 V 电源的高端断路与负载切换
  • 电源分配与保护:电源路径选择、电源故障隔离、反向保护电路
  • 电池管理与便携设备:电源输入切换、充放电回路(在电压≤20 V 条件下)
  • MOSFET 组合使用的 DC-DC 转换与功率管理模块

五、设计与使用建议

  • 驱动考虑:P 沟道 MOSFET 在开通时需将栅极拉低以产生足够的 Vgs。为达到额定 RDS(on),建议提供接近 4.5 V 的驱动幅度(相对于源极的电压差)。栅极驱动器需能供给约 10 nC 的电荷以实现预期开关速度。
  • 开关损耗与米勒效应:Crss(290 pF)会在变换过程中产生明显米勒电容效应,快速开关时需注意电压摆动与栅极回路抑制,适当布置栅极电阻以抑制振铃。
  • 热设计:器件 Pd = 3 W 为总体耗散能力参考,实际散热能力依赖 PCB 铜箔面积与散热环境。高电流应用下应增大散热铜箔并缩短主电流回路以降低温升。
  • 并联与保护:若需更高电流,可考虑并联多个通道或器件,但需采取匹配与均流措施(小阻值平衡电阻或热耦合)。同时建议配合熔断、限流或热关断保护以提高系统可靠性。
  • 版图与走线:尽量缩短源-漏主电流回路,增宽铜迹,减小寄生电感;栅极走线应避开强干扰源并加上退耦与旁路电容。

六、封装与可靠性

SOP-8 封装内含两路 P 沟道 MOSFET,适合空间受限但需双通道配置的场合。器件的工作温度与电气参数适用于工业级应用,推荐在设计时结合系统温升分析与长期工作应力测试,以确认在目标环境下的可靠性。

总结:NCE4963 以其低导通电阻、合理的开关特性与双通道 SOP-8 形式,为需要简单高侧开关、功率管理与电源保护的设计提供了成本效益较高的选择。在实际使用中注意栅极驱动、电路版图与散热设计,可发挥其最佳性能。

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