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HXY MOSFET AOD4185
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HXY MOSFET AOD4185
- Type
- HXY MOSFET
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HXY MOSFET
- Electronic Component
- AOD4185
- Electronic Component
- 1
- Package
- TO-252-2L
- Electronic Component
- 1 P
- Type
- P
- Electronic Component
- MOSFET
- Electronic Component
- Electronic Component
- Electronic Component
- 0.487g
- Electronic Component
- 1
- Electronic Component
- BM0228150194
- Operating Temperature
- 55℃~+150℃
- Power Dissipation(Pd)
- 40.3W
- Electronic Component
- Electronic Component
- Electronic Component
- 2500
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AOD4185 产品概述
一、产品简介
AOD4185 是华轩阳电子（HXY MOSFET）推出的一款高性能 P 沟道功率 MOSFET，单只器件适用于中低电压高电流场合的高侧开关或反向保护。器件工作温度范围宽（-55℃～+150℃），在 40V 额定漏源电压下提供高达 40A 的连续漏极电流能力，适合要求导通损耗低且切换特性平衡的电源管理与功率控制应用。
二、主要参数
- 类型：P 沟道 MOSFET
- 封装：TO-252-2L
- 漏源电压 Vdss：40 V
- 连续漏极电流 Id：40 A
- 导通电阻 RDS(on)：19 mΩ @ Vgs = 10 V
- 耗散功率 Pd：40.3 W
- 阈值电压 Vgs(th)：1.5 V
- 栅极电荷 Qg：35 nC @ 10 V
- 输入电容 Ciss：2.525 nF
- 输出电容 Coss：190 pF
- 反向传输电容 Crss：172 pF
- 数量：1 个 P 通道
三、性能特性与设计意义
- 低导通电阻（19 mΩ@10V）：在高电流条件下可显著降低导通损耗，提升效率。以 40 A 为例，理论导通损耗 I^2·R ≈ 40^2×0.019 ≈ 30.4 W，接近器件 Pd 规格，实际设计中需考虑散热和占空比限制。
- 适中栅极电荷（35 nC）：栅极驱动能量与驱动电流需求处于中等水平，要求驱动器能提供足够的峰值电流以获得满意的开关速度，同时注意栅极驱动损耗。
- 电容特性（Ciss/Coss/Crss）：Ciss 较大意味着在快速切换时栅极驱动能量上升；Coss 与 Crss 决定开关期间的能量回收与米勒效应，需在驱动设计与抗干扰布局上做好匹配。
四、典型应用场景
- 汽车与工业电源的高侧开关与负载切换（在 40V 以内的系统）
- 电池管理、逆变器与电机控制中的反向保护、断路与软开关
- 需要简化高侧驱动电路的场合（P 沟道便于直接将源接正端控制）
五、布局与可靠性建议
- 散热：TO-252-2L 封装热阻相对较高，高电流、持续工作时需通过加大 PCB 散热铜箔或外部散热器降低结温，确保不超过 Pd 与额定结温。
- 驱动与钳位：推荐以 10 V 驱动以达到标称 RDS(on)，并在栅极加串联电阻以抑制振铃；在有较大电感或快速 dv/dt 的应用中，考虑 RC 阻尼或吸收器抑制能量回灌。
- 布局：缩短功率回路和栅极回路的环路面积，减小寄生电感；Crss 导致的米勒耦合在高 dV/dt 时影响开关稳定性，应优先布局与旁路电容设计。
- 并联与保护：如需并联以分担更大电流，注意匹配 RDS(on) 和热阻，加入单独限流或电流均流设计；建议配合过流与过温保护电路使用。
总结：AOD4185 以其 40V/40A 的电流能力、较低的导通电阻和可控的开关特性，适合多种需要高侧开关或可靠反向保护的场合。设计时应重视热管理与栅极驱动匹配，以发挥器件在效率与可靠性方面的优势。
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