WMSIC Electronic Components

COSINE COS4426SR

ModelCOS4426SR
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 COS4426SR
Type
COSINE
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
COSINE
Electronic Component
COS4426SR
Electronic Component
1
Package
SOP-8
Electronic Component
(OTP)
Electronic Component
Gate Driver IC
Electronic Component
1.539g
Electronic Component
1
Electronic Component
BM0264547326
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~25V
Load Type
MOSFET
Current(IOH)
200mA
Current(IOL)
200mA
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.

COS4426SR 半桥MOSFET栅极驱动器产品概述

COS4426SR是科山芯创(COSINE)推出的双通道MOSFET栅极驱动器,针对中低压功率变换场景的核心驱动需求设计,平衡了驱动能力、响应速度与可靠性,可广泛适配消费电子、工业电源、通信设备等领域的半桥拓扑应用。

一、产品定位与核心应用场景

COS4426SR定位于中小功率MOSFET的高性价比驱动方案,聚焦半桥拓扑结构(如Buck-Boost、半桥逆变等)的核心驱动环节。其应用场景覆盖三类典型领域:

  1. 消费电子:小型开关电源(手机充电器、笔记本适配器)、LED驱动电源(如室内照明调光模块);
  2. 工业级场景:低压直流电源、小功率电机驱动(伺服/步进电机控制器)、工业传感器供电模块;
  3. 通信与新能源:路由器/交换机电源模块、微型光伏逆变器(小功率)、电动车辅助12V电源系统。

二、关键电气参数总览

COS4426SR的核心参数围绕“高驱动、快响应、宽适配”设计,关键指标如下:

参数项 数值/范围 核心意义 驱动通道数 2通道 适配半桥拓扑的上下管驱动 灌电流/拉电流(IOL/IOH) 200mA 足够驱动中小功率MOSFET栅极 工作电压范围 4.5V~25V 兼容12V、24V等常见电源系统 上升/下降时间(tr/tf) 11ns 高频下降低开关损耗 输入高/低电平(VIH/VIL) 1.8V/700mV 直接匹配3.3V/5V MCU输出 静态电流(Iq) 900μA 待机功耗低,提升系统能效 工作温度范围 -40℃~+85℃ 工业级宽温,适应极端环境 保护特性 内置过热保护 过温时关断输出,防止器件损坏

三、核心性能特性解析

1. 高驱动能力与快速开关响应

COS4426SR的200mA灌/拉电流可快速充放电MOSFET栅极电容,11ns的上升/下降时间能有效降低高频下的开关损耗——例如在100kHz~1MHz的开关频率范围内,可使MOSFET的导通/关断过渡时间缩短,减少能量损耗,提升系统整体效率。

2. 宽电压适配与低功耗设计

  • 工作电压覆盖4.5V~25V,可兼容常见的12V(消费电子)、24V(工业电源)系统,无需额外电压转换电路;
  • 900μA的静态电流在待机状态下功耗极低,适合对能效要求较高的应用(如电池供电的小型设备)。

3. 强输入兼容性与易用性

输入高电平仅需1.8V、低电平≤700mV,可直接匹配市面上主流3.3V/5V MCU的输出(如STM32、ATmega系列),无需电平转换芯片,简化电路设计、降低BOM成本。

4. 内置过热保护提升可靠性

当芯片结温超过阈值时,内置过热保护电路会自动关断输出,避免MOSFET因过温损坏,同时防止芯片自身烧毁——这一特性尤其适合工业现场(如高温车间)或长时间连续工作的场景。

四、封装与可靠性设计

COS4426SR采用SOP-8封装,具有以下优势:

  1. 体积紧凑:适合PCB空间受限的应用(如小型适配器、嵌入式模块);
  2. 成熟工艺:SOP-8是工业级成熟封装,采购渠道广泛,焊接工艺简单(回流焊、波峰焊均可);
  3. 抗干扰性:引脚布局合理,减少寄生电感/电容,提升电路稳定性;
  4. 环境适应性:封装材料符合RoHS标准,抗静电(ESD)能力满足工业级要求,可承受机械应力与温度变化。

五、应用设计注意事项

  1. 栅极电阻匹配:根据MOSFET栅极电容大小,选择10Ω~100Ω的栅极电阻,平衡开关速度与EMI(电磁干扰);
  2. 电源去耦:在VCC引脚旁并联10μF电解电容+0.1μF陶瓷电容,减少电源纹波对驱动的影响;
  3. 热管理:若工作在高负载或高温环境,可在芯片底部涂覆导热硅脂,提升散热效率。

综上,COS4426SR凭借“高驱动能力、快响应、宽适配、高可靠性”的特性,成为中小功率MOSFET驱动的高性价比选择,可有效简化电路设计、提升系统能效与稳定性。

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