WMSIC Electronic Components

VBsemi VBA4658

ModelVBA4658
PackageSOP-8
BrandVBSEMI
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 Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
VBsemi VBA4658
Type
VBSEMI
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
VBSEMI
Electronic Component
VBA4658
Electronic Component
1
Package
SOP-8
Electronic Component
2 P
Type
P
Electronic Component
MOSFET
Electronic Component
0.364g
Electronic Component
1
Electronic Component
BM0263466733
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
4W
Electronic Component
Electronic Component
Electronic Component
4000
Voltage(Vdss)
60V

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

VBA4658 产品概述

一、产品简介

VBA4658 是 VBsemi(微碧半导体)推出的一款双通道 P 沟道场效应晶体管,封装为 SOP-8。器件耐压 60V,单通道连续漏极电流 5.3A,适用于需要高侧开关或反向控制的中功率场合。器件在宽温度范围内工作(-55℃ 至 +150℃),可靠性适应工业级应用。

二、主要电性能参数

  • 类型:P 沟道 MOSFET(双通道,2 个)
  • 漏源电压 Vdss:60V
  • 连续漏极电流 Id:5.3A(单通道)
  • 导通电阻 RDS(on):54mΩ @ Vgs=10V;60mΩ @ Vgs=4.5V
  • 阈值电压 Vgs(th):约 3V(测试电流 250µA)
  • 总栅极电荷 Qg:32nC @ 10V
  • 输入电容 Ciss:1.345nF
  • 输出电容 Coss:210pF
  • 反向传输电容 Crss(Coss):180pF
  • 功耗 Pd:4W(封装限值)
  • 工作温度范围:-55℃ ~ +150℃
  • 封装:SOP-8

三、特性亮点与应用场景

VBA4658 在 60V 级别上提供较低的导通电阻,适合做高侧开关、负载切换、反并联保护、逆变器/电源管理的低压侧控制等场景。较小的 RDS(on) 有利于降低导通损耗;适中的 Qg 和 Ciss 指出在驱动电路设计上需兼顾驱动能力和开关损耗。

典型应用:

  • 电源管理中的高侧 P 沟道开关
  • 电池保护与充放电切换
  • 低功耗同步开关与负载断路
  • 工业控制与通信设备的电源切换

四、驱动与开关考虑

VBA4658 的 Qg≈32nC(10V)表明在要求快速开关时需要相对较强的驱动电流以缩短开关时间,否则会增加开关损耗。由于为 P 沟道器件,驱动电压极性与 N 沟道相反:开启时需使栅源电压(Vgs)为负方向(栅极相对于源极下降),关断时 Vgs 接近 0V 或正向。注意器件在 4.5V 驱动下 RDS(on) 仅略微升高(60mΩ),可在部分低电压驱动系统中直接使用。

五、封装与热管理

SOP-8 封装提供了适中的空间和散热通道,器件额定功耗为 4W。在实际电路中应注意合理的 PCB 散热设计:增大铜箔面积、优化散热孔与热过孔布局、并保证与热源的距离和对流环境。若连续高电流工作,应评估结温并确保在环境温度与功耗条件下不会超出器件允许范围。

六、选型与工程建议

  • 在高侧应用中,确认驱动电路能提供所需的 Vgs(负向幅度)并且驱动速率与系统损耗匹配。
  • 若系统常态工作于 4.5V 驱动,参考 60mΩ 的 RDS(on) 进行功耗计算;若需要更低导通损耗,采用 10V 驱动可获得 54mΩ 的性能优势。
  • 对于频繁开关的场合,结合 Qg 与开关频率评估驱动功率损耗,并可适当减小切换速度以降低 EMI 与损耗。
  • 布局时短而粗的栅极走线、靠近器件的驱动源以及充足的散热铜面积,有助于提升可靠性与性能。

VBA4658 以其 60V 耐压、低 RDS(on) 与双通道集成的形式,为中等功率、高侧控制与电源切换应用提供实用的器件选择。选型时请以完整的器件数据手册为依据,结合系统实际工况进行热与驱动设计。

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