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BSC117N08NS5 是英飞凌(Infineon)推出的一款 80V N沟增强型MOSFET,封装为 TDSON-8 (5x6)。器件面向中高电压开关和功率管理应用,具有较低的导通电阻与适中的开关电荷,适合空间受限且要求高效率的电源设计。
为达到标称 RDS(on) 需采用接近 10 V 的门极电压。Qg=15 nC 属于中等水平,若要求快速开关(例如 t_r≈100 ns),驱动器需提供约 1.5 A 的开关电流(I ≈ Qg·Vdrive/tr),因此建议使用峰值驱动能力 ≥2 A 的栅极驱动器或适当选择门极电阻(10–33 Ω)以平衡切换损耗与电磁干扰。较小的 Crss(11 pF)有利于降低米勒效应,引起的误触发风险较低。
封装静态耗散 Pd=2.5 W,表明在无明显散热时器件功耗受限。实际允许的连续电流 49 A 通常是在理想冷却条件(例如 Tc=25 ℃)下测得。TDSON-8 需要良好 PCB 散热设计:增加底部散热焊盘、加宽铜箔、使用多层过孔散热到内层/底层,并进行必要的温度仿真或实测以防止热失控。
BSC117N08NS5 在 80V 级别中提供较低的导通电阻和适中的开关特性,适合追求体积小、效率高且需较大连续电流的应用场景。若系统要求极低开关损耗或更高散热能力,可考虑更大封装或更低 RDS(on) 的器件;若对开关速度敏感,应匹配合适的驱动器与布局措施。
主要参数一览:80 V / 49 A / 11.7 mΩ@10 V / Qg 15 nC / Ciss 1 nF / 封装 TDSON-8。有关最大额定值、动态特性曲线及封装管脚配置,请参阅英飞凌官方数据手册以获得完整设计数据。
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Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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