WMSIC Electronic Components

HXY MOSFET AON7544

ModelAON7544
PackageDFN3x3-8L
BrandHXY MOSFET
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
HXY MOSFET AON7544
Type
HXY MOSFET
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HXY MOSFET
Electronic Component
AON7544
Electronic Component
1
Package
DFN3x3-8L
Electronic Component
1 N
Type
N
Electronic Component
MOSFET
Electronic Component
Electronic Component
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0227148579
Operating Temperature
55℃~+150℃
Power Dissipation(Pd)
62.5W
Electronic Component
Electronic Component
Electronic Component
5000

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

AON7544 产品概述

一、产品简介

AON7544 是华轩阳电子(HXY MOSFET)推出的一款高性能 N 沟道功率 MOSFET,封装为 DFN3x3-8L。器件设计用于中低压大电流场合,额定漏源电压为 30V,连续漏极电流高达 100A,导通电阻仅 5.5mΩ(VGS=10V, ID=30A),功耗能力实测 Pd=62.5W(参考热设计条件)。工作温度范围宽 (-55℃ ~ +150℃),适用于对可靠性和热管理有较高要求的工业和消费类应用。

二、关键参数与性能亮点

  • 漏源耐压:30V,适合 12V/24V 电源域的开关和同步整流应用。
  • 连续电流:100A,支持大电流瞬态和稳态负载。
  • 开通电阻:RDS(on)=5.5mΩ @ VGS=10V(ID=30A),在优化驱动下可显著降低导通损耗。
  • 栅极阈值:VGS(th)=2.5V,接近逻辑门槛,但推荐以 10V 驱动以获得最低 RDS(on)。
  • 栅极电荷:Qg=31.6nC @ 4.5V,栅电容较大,对栅驱动能力要求较高。
  • 输入/反向传输电容:Ciss=3.075nF, Crss=315pF(@15V),需要在快速开关时关注米勒效应与开关损耗。
  • 包装:DFN3x3-8L,体积小、热性能优越,适合高密度 PCB 布局。

三、典型应用场景

  • 同步降压转换器(Server、通信、电源模块)
  • 高电流功率级(电动工具、储能系统子模块)
  • 负载开关、逆变器和电机驱动的小功率分段
  • 汽车电子(非驱动和辅助电源)及工业电源管理单元

四、设计与使用建议

  • 栅极驱动:由于 Qg=31.6nC,建议使用能提供 2A 以上峰值电流的驱动器,若要求更快的开关(e.g. tr < 50ns),则驱动峰值电流应相应提升;可并联小阻(2–10Ω)以控制开关速度与振铃。
  • 驱动电压:为达到标称 RDS(on),推荐 VGS=10V;若系统仅有 5V 驱动,应验证在该电压下的导通损耗与热升。
  • 热管理:DFN3x3-8L 虽热阻较低,但在大电流工作时仍需通过较大的铜箔面积、下沉焊盘及多孔过孔将热量散至 PCB 背面或散热器,确保结温在额定范围内。
  • 开关及 EMC:Crss 导致的米勒效应在硬开关时会增加开关损耗和电压振铃,建议在必要时使用缓冲网络(RC 阻尼或吸收二极管)、合适布局以及紧凑的回流路径以降低 EMI。
  • 保护设计:在高电流场合应考虑电流检测、过温和短路保护;并在功率回路中配置合适的续流器件以限制电压过冲。

五、封装与 PCB 注意事项

DFN3x3-8L 提供小尺寸与较好导热路径,但需注意:焊盘与热焊盘应按厂家推荐焊盘设计,打通多颗过孔改善垂直热传递;短而粗的电流回路有利于减小寄生电感,降低开关损耗与振铃。

六、规格选型提示

选择 AON7544 时,优先评估系统最大连续/突发电流、允许结温与驱动能力。若系统驱动仅 5V,需权衡 RDS(on) 增大带来的损耗;若要求极快开关速度或更低导通电阻,可在热预算允许下考虑更高驱动电压或并联多个 MOSFET 分担电流。

总结:AON7544(HXY)在 30V 电压域下提供了低 RDS(on)、高电流能力与紧凑 DFN 封装的平衡,是需在有限 PCB 面积内实现大电流、低损耗开关或同步整流应用的优选器件。

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