WMSIC Electronic Components

COSINE COS4428SR

ModelCOS4428SR
PackageSOP-8
BrandCOSINE
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
COSINE COS4428SR
Type
COSINE
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
COSINE
Electronic Component
COS4428SR
Electronic Component
1
Package
SOP-8
Electronic Component
(OTP); (UVP)
Electronic Component
Gate Driver IC
Electronic Component
0.205g
Electronic Component
1
Electronic Component
BM0265013188
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~25V
Load Type
MOSFET
Current(IOH)
1.5A
Current(IOL)
1.5A
Driver Channel Count
2

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

COS4428SR 栅极驱动芯片 产品概述

一、简介

COS4428SR 是科山芯创(COSINE)推出的一款双通道 MOSFET 栅极驱动器,封装为 SOP-8(150mil)。芯片针对功率开关应用设计,能够以高电流瞬态驱动 MOSFET 的栅极,实现快速上升/下降、可靠的开关控制,同时内置多项保护功能以提高系统可靠性。适用于开关电源、电机驱动、LED 驱动及电源管理领域中对栅极驱动性能与可靠性有较高要求的场景。

二、主要参数

  • 器件型号:COS4428SR(SOP-8 150mil)
  • 品牌:COSINE(科山芯创)
  • 驱动通道数:2 通道(双路驱动)
  • 驱动电流:灌电流 IOL = 1.5A,拉电流 IOH = 1.5A(峰值能力,可实现快速驱动)
  • 工作电压范围:VCC = 4.5 V ~ 25 V
  • 上升/下降时间:tr = 11 ns,tf = 11 ns(典型值,用以实现快速开关)
  • 输入逻辑电平兼容:输入高电平 VIH = 1.8 V,输入低电平 VIL = 0.7 V(可直接与 1.8V/3.3V/5V MCU/逻辑兼容)
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 保护功能:过热保护(OTP)、欠压保护(UVP)
  • 其他功能:交错导通保护(用于交错/错相拓扑)、死区时间控制(防止导通重叠)

三、功能特性

  • 双通道高驱动能力:±1.5A 的瞬态驱动电流可快速给 MOSFET 栅极充放电,降低切换损耗,改善开关边沿质量。
  • 宽电源范围:4.5V–25V 的工作电压覆盖常见的栅极驱动电源电压(如 10–12V、15V 等),适应性强。
  • 快速开关性能:典型上升/下降时间 11ns,适合高频开关场合,降低开关损耗但需注意 EMI 管理。
  • 逻辑兼容性:输入阈值支持最低 1.8V 的高电平输入,方便与低压 MCU/FPGA 直接接口。
  • 安全保护:内置欠压保护可在驱动电源不足时保证输出处于安全状态,过热保护在器件过温时触发保护措施,提升系统鲁棒性。
  • 交错与死区控制:芯片提供交错导通保护,用于多相或交错拓扑以减少输出纹波和热应力;内建死区时间控制用于避免上下臂 MOSFET 的导通重合(shoot-through),提高功率级安全性。

四、典型应用

  • 同步整流或半桥/全桥驱动(DC-DC 变换器、逆变器)
  • 电机驱动(无刷直流电机驱动器、伺服电机驱动)
  • 多相电源或交错式降压(减小纹波、提高效率)
  • LED 驱动、电源管理模块与电池保护电路

五、使用建议与 PCB 布局要点

  • 电源去耦:建议在 VCC 引脚附近放置高品质陶瓷去耦(如 0.01–0.1 μF)并与较大电容(1 μF 以上)并联,以抑制瞬态电流引起的电压压降。去耦电容应靠近芯片引脚焊盘布局。
  • 栅极电阻:根据 MOSFET 的栅电容与开关速度要求选择合适的串联栅极电阻(Rgate),以平衡开关损耗与 EMI。
  • 地平面与回流:保持驱动器供电、栅极回路的走线最短,提供连续接地平面,减小寄生电感,避免栅极振铃及误触发。
  • 散热注意:SOP-8 封装有限散热能力,需评估芯片在实际开关频率和负载条件下的发热,并在 PCB 上提供良好散热路径与铜箔面积。
  • 保护电路:在高 dv/dt 环境下,可在栅极添加 TVS、RC 阻尼或栅极到地的阻容网络,防止栅极过压或振荡。

六、封装与订购信息

  • 封装:SOP-8(150 mil)标准封装,便于面装焊接与批量生产。
  • 型号标识:COS4428SR(用于索取样片或量产订购时请确认完整型号与工艺编号)。
  • 品牌:COSINE(科山芯创),建议通过正规代理或厂商渠道获取器件及数据手册以确保版本一致性与后续技术支持。

七、可靠性与保护行为说明

当发生欠压或过温等异常时,COS4428SR 会进入保护状态以防止 MOSFET 与功率级损坏。设计时应考虑保护触发后的系统恢复策略(如上电复位、外部监控与重新使能逻辑),并在 PCB 与系统层面提供必要的监测与故障指示。

总结:COS4428SR 是一款面向双通道 MOSFET 驱动的高性能器件,兼顾快速开关、逻辑兼容与多重保护,适用于多种功率开关与多相拓扑场景。欲获得更详细的电气特性曲线、典型应用电路与引脚配置,请参考 COSINE 官方数据手册或联系厂商技术支持。

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