WMSIC Electronic Components

UMW AOD442

ModelAOD442
PackageTO-252
BrandUMW
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
UMW AOD442
Type
UMW
Minimum package
2500

Technical parameters

Electronic Component
UMW
Electronic Component
AOD442
Electronic Component
1
Package
TO-252
Electronic Component
1 N
Electronic Component
MOSFET
Electronic Component
0.465g
Electronic Component
1
Electronic Component
BM0229961319
Operating Temperature
55℃~+175℃
Power Dissipation(Pd)
60W
Electronic Component
2500
Voltage(Vdss)
60V
Capacitor(Ciss)
1.92nF
Output Capacitor(Coss)
155pF
Gate (Qg)
47.6nC@10V

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

AOD442 产品概述

一、产品简介

AOD442 是友台半导体(UMW)推出的一款60V额定电压的N沟增强型功率MOSFET,采用TO-252(DPAK)封装。凭借低导通电阻与较高的额定电流,适用于开关电源、同步整流、降压转换及功率管理等中功率场景。其关键电气参数包括:Vdss = 60V、连续漏极电流 Id = 37A、RDS(on) = 16mΩ@Vgs=10V(20mΩ@Vgs=4.5V),栅极电荷 Qg = 47.6nC(10V),输入电容 Ciss = 1.92nF,反向传输电容 Crss = 116pF,输出电容 Coss = 155pF,工作温度范围 -55℃ ~ +175℃,耗散功率 Pd = 60W。

二、主要特性

  1. 60V 耐压:适合汽车电子外围和工业电源常见的48V/24V系统应用,具有一定的电压裕量。
  2. 低导通电阻:在10V栅压下仅16mΩ,导通损耗小,适合需要高效率的同步开关或低压大电流路径。
  3. 栅极电荷与开关特性:Qg = 47.6nC(10V)属于中等量级,既保证容易驱动又需注意开关损耗和驱动能量。
  4. 中等电容值:Ciss = 1.92nF、Crss = 116pF,影响开关转换期间的电压尖峰和回灌能量,需配合合理的驱动与阻尼。
  5. 宽温度范围与较高Pd:可在苛刻环境中工作,热设计与散热管理仍需认真考虑。

三、典型应用场景

  • 同步整流与降压转换器(DC-DC):用于高效率的主开关或同步开关,将RDS(on)与导通损耗优势发挥出来。
  • 电机驱动与BLDC控制器:在中低压电机驱动环节作为开关管或半桥元件。
  • 汽车及工业电源管理:在24V/12V系统进行电源分配、负载开关与反向保护。
  • 逆变与UPS前端:作为开关元件参与高频变换,需配合驱动电路优化开关损耗。

四、驱动与布局建议

  • 驱动电压:若追求最低RDS(on),建议采用10V栅压驱动;若驱动器电压受限制(如4.5V),注意RDS(on)增加至20mΩ,需计算额外的导通损耗。
  • 驱动电流与速度:Qg 47.6nC 表明需要较强的瞬时驱动能力以缩短开关时间,建议采用高峰值电流的专用门极驱动器,并可通过外加门极电阻(Rg)来平衡开关速度与电压应力。
  • PCB 布局:尽量缩短栅、漏、源之间的回流路径,减小寄生电感;在高电流路径使用宽铜箔与多层过孔增强散热。
  • 抑制尖峰:在功率开关节点并联吸收元件(RC、RC Snubber)或TVS,防止因Crss导致的电压回升影响器件可靠性。

五、热管理与封装注意

TO-252(DPAK)为表面贴装封装,热阻相对较小,但在高电流或高占空比工作时仍需依靠PCB散热。推荐:

  • 在焊盘处尽量扩展铜面并使用多层过孔连接至内层/底层散热铜箔;
  • 评估在最大功耗条件下的结-焊盘温升,确保结温不超过175℃(长期工作建议有适当裕度);
  • 根据Pd = 60W 的标称耗散能力结合系统实际散热条件进行功率折算与降额设计。

六、电气与可靠性设计提示

  • 在选型时根据最大工作电流、占空比与工作频率计算导通损耗(I^2·RDS(on))与开关损耗(与Qg、Vds与fs相关),综合评估温升;
  • 注意Vgs(th) = 2.1V(250µA)表明器件在逻辑电平下仍有导通风险,实际开关使用应保证明确的驱动电压和上/下拉;
  • 长期可靠性需关注结温循环、热阻与焊点疲劳,遵循厂商的回流与焊接曲线。

七、总结

AOD442 在60V额定、低RDS(on)与中等Qg的配置上具有均衡的性能,适合中功率开关与同步整流等应用。设计时要重点关注栅极驱动能力、PCB散热与寄生参数抑制,才能在保持高效率的同时保证可靠性。若需替代或并联使用,请核对热阻、二次特性及并联分流一致性,确保系统稳定运行。若需要详细的绝对最大额定值、完整特性曲线与封装图,请参考厂方数据手册或联系供应商获取原始资料。

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