WMSIC Electronic Components

ElecSuper AON7544-ES AON7544

ModelAON7544-ES
PackagePDFN3x3-8L
BrandElec Super
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
Elec Super AON7544-ES
Type
ELECSUPER
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ELECSUPER
Electronic Component
AON7544-ES
Electronic Component
1
Package
PDFN3x3-8L
Electronic Component
1 N
Type
N
Electronic Component
MOSFET
Electronic Component
0.1g
Electronic Component
1
Electronic Component
BM0258808445
Power Dissipation(Pd)
30W
Electronic Component
Electronic Component
Electronic Component
5000
Voltage(Vdss)
30V
Capacitor(Ciss)
2.2nF

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

AON7544-ES 产品概述

一、主要规格一览

AON7544-ES 是 ElecSuper(静芯微)推出的一款小封装、高电流能力的 N 沟道增强型功率 MOSFET,适用于中低压功率转换与开关场合。主要参数如下:

  • 类型:N沟道 MOSFET(增强型)
  • 漏源电压 Vdss:30 V
  • 连续漏极电流 Id(Ta):45 A
  • 导通电阻 RDS(on):4.0 mΩ @ VGS=10 V;6.5 mΩ @ VGS=4.5 V
  • 阈值电压 VGS(th):约 1.75 V @ ID=250 µA
  • 总栅电荷 Qg:48 nC @ VGS=10 V
  • 输入电容 Ciss:2.2 nF;输出电容 Coss:275 pF;反向传输电容 Crss:242 pF
  • 功率耗散 Pd:30 W(封装工况相关)
  • 封装:PDFN-8L (3 x 3 mm) 带大底铜散热焊盘
  • 单位:1 片

二、器件特点与优势

  • 低导通损耗:在典型 10 V 驱动下,RDS(on) 仅 4 mΩ,适合对导通损耗敏感的高电流路径(例如同步整流、低压高电流输出)。
  • 兼顾逻辑电平驱动:在 4.5 V 驱动下 RDS(on) 6.5 mΩ,便于与低电压门驱或微控制器直接配合(但最佳性能需 10 V 驱动)。
  • 合理的栅极电荷:Qg=48 nC,虽不是超低栅电荷器件,但在高速开关与驱动功耗之间取得较好平衡,适合中高速开关频率应用。
  • 紧凑封装且散热良好:PDFN3x3-8L 带大底铜焊盘,便于通过 PCB 散热设计实现较高的平均功率处理能力。

三、典型应用场景

  • 同步整流与降压(buck)转换器功率开关
  • 负载开关、无感负载开断
  • 电源管理与点对点电源分配(12 V/24 V 辅助电源)
  • 电机驱动中的高侧/低侧开关(配合驱动器)
  • 汽车电子(对 30 V 额定电压,需注意瞬态抑制与符合车规拓展)

四、驱动与开关性能建议

  • 驱动电压:为达到数据表标称 RDS(on),推荐使用 10 V 门驱;若仅有 5 V 或 4.5 V 驱动,器件仍能工作但导通损耗会增加。
  • 栅极驱动功率估算:
    • 驱动平均电流 Ig ≈ Qg × fSW。例如 fSW=500 kHz 时,Ig ≈ 48 nC × 500 kHz = 24 mA。
    • 驱动功率 Pgate ≈ Qg × Vdrive × fSW。例如 10 V 驱动、500 kHz,则 Pgate ≈ 48 nC × 10 V × 500 kHz = 240 mW。
  • 栅极阻抗:建议并行使用小阻值限流(如 5–10 Ω)以控制开关过渡与振铃。若对 EMI 严格,请适当增大或在源端并联 RC 阻尼。
  • Miller 效应:Crss = 242 pF,开关过程中会产生明显的米勒耦合,快速电压跃变时需考虑钳位或驱动增稳。

五、热设计与 PCB 布局建议

  • 使用完整的底部散热焊盘,并在焊盘下及周围布置多孔通孔(thermal vias)连接至内/底层大面积铜箔,以提高散热能力。
  • 电流通路宽且短,尽量使用多层铜箔并行以降低寄生电阻和电感。
  • 将驱动器、旁路电容和 MOSFET 放置在最短回路路径上,输入输出去耦电容贴近器件引脚。
  • 在高电流路径处采用加厚铜(如 2 oz)能有效降低温升,使器件在 Pd 限值内稳定工作。

六、选型注意事项

  • 若工作环境存在高瞬态或反向能量回灌,请配合合适的瞬态抑制器(TVS)或添加能量吸收网络;器件 30 V 额定不等同于抗所有瞬态。
  • 在高频高电流应用中,应综合考虑导通损耗与开关损耗后选择合适的驱动频率与器件并联策略。
  • 若目标系统需通过车规(AEC-Q)或更严格认证,请验证供应商是否有相应的等级与测试资料。

AON7544-ES 以其低 RDS(on)、中等栅电荷和紧凑散热良好的 PDFN3x3 封装,适合在空间受限且需高电流处理的电源与功率开关场合应用。合理的驱动与 PCB 热设计可充分发挥其在导通效率与开关性能之间的优势。

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