【应用】USB Type-C端口的瞬态干扰防护

时间： 2019-07-29 来源：世强作者：凡尘

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自从USB3.1的标准发布以来，USB Type-C接口在手机、平板和存储设备等数码产品上得到了广泛的应用，受到越来越多的消费者青睐。Type-C是USB接口的一种连接介面，不分正反两面均可插入，大小约为8.3mm×2.5mm，和其他介面一样支持USB标准的充电、数据传输、显示输出等功能。USB Type-C的数据传输速度最高能够达到10Gbps。

随着USB Type-C应用的深入，对于接口的保护也提出了新的需求。由于通信速率提高，要求信号线上保护器件的寄生电容和阻抗更低。为了保证信号的完整性，LITTELFUSE提供了高速信号线的最佳保护方案，不仅提供了超强的浪涌防护能力，而且具有超低的寄生电容和电感。具体保护方案如下图：

图1：Type-C端口保护方案

SP0201B-ULC-01UTG是超低电容的分散式TVS系列产品，其寄生电容单向最高0.25pF，双向最高0.13pF，为全世界最具挑战性的高速串行接口提供单向和双向ESD保护。超低电容可在最具挑战性的消费电子产品中实现极佳的信号完整性，比如USB 3.1、HDMI 2.0、DisplayPort和V-by-One。其提供超过20kV的触点ESD保护（IEC61000-4-2），同时保持极低的泄漏及动态电阻，以及提供业界最受欢迎的尺寸（0402和0201）。该系列为信号完整性和可用性设定了更高的标准。

SP0201B-ULC-01UTG主要功能与特色:

• 寄生电容：最高0.13pF双向，最高0.25pF单向
• ESD，IEC61000-4-2，±20kV（触点），±20kV（空气）
• 10V低箝位电压@IPP=2A（双向）(tp=8/20μs)
• 小尺寸0201和0402 DFN封装装
• 实现极佳的信号完整性
• 符合ELV标准
• 无卤素，无铅，符合RoHS

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terrydl Lv9. 科学家 2017-11-02

很强大，收藏了

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LITTELFUSE - DISCRETE UNIDIRECTIONAL TVS DIODE,TVS二极管阵列,离散单向TVS二极管,SPA® DIODES,SPA®二极管,AVALANCHE BREAKDOWN DIODES,TVS DIODE ARRAYS,雪崩击穿二极管,SC11**-01UTG,SC11XX,SC1122,SC1122-01UTG,SC11XX SERIES,SC1105-01UTG,SC1115-01UTG,SC1105,SC1115,试验设备,医疗设备,SWITCHES,INSTRUMENTATION,按钮,DESKTOPS,SERVERS,TEST EQUIPMENT,MEDICAL EQUIPMENT,销售点终端,电脑外设,仪表,开关,NOTEBOOKS,COMPUTER PERIPHERALS,服务器,BUTTONS,笔记本电脑,台式机,POINT-OF-SALE TERMINALS

03/29/24 - 数据手册代理服务技术支持采购服务