原标题：TI USB Type-C和供电迷你坞站参考设计TIDA-01243

　　TI公司的USB Type-C和供电迷你坞站提供了包括音频,USB数据,供电和视频在内的完整解决方案,尺寸只有2吋x4吋,支持USB Type-C PD端口的电流源和沉功能,视频输出包括显示器端口(DisplayPort)和HDMI,主要用在笔记本电脑.本文介绍了迷你坞站所采用元件之一高速双向无源开关HD3SS460主要特性和功能框图,以及评估板USB Type-C™ Mini Dock EVM主要特性,框图,电路图,材料清单和PCB设计图.

　　The HD3SS460 is a high-speed bi-directional passiveswitch in mux or demux configurations. Based oncontrol pin POL the device provides switching toaccommodate connector flipping. The device alsoprovides muxing between 2Ch Data/2Ch Video and all 4Ch Video based on control pin AMSEL.

　　The device also provides cross points MUX for lowspeed pins as needed in　flippable connectorimplementation.

　　The HD3SS460 is a generic analog differentialpassive switch that can work for any high speedinterface applications as long as it is biased at acommon mode voltage range of 0-2V and hasdifferential signaling with differential amplitude up to1800mVpp. It employs an adaptive tracking thatensures the channel remains unchanged for entirecommon mode voltage range.

　　Excellent dynamic characteristics of the device allowhigh speed switching with minimum attenuation to thesignal eye diagram with very little added jitter. Itconsumes <2 mW of power when operational and<5μW in shutdown mode, exercisable by EN pin.

　　HD3SS460主要特性:

　　• Provides MUX Solution for USB Type-CTMEcosystem Including Alternate Mode (AM)

　　• Provides Wide Channel Selection ChoicesIncluding USBSS and 2 Ch AM, 4 Ch AM

　　• Compatible with 5 Gbps USB3.1 Gen 1 and AMIncluding 5.4 Gbps DisplayPort 1.2a

　　• Compatible for Source/Host and Sink/DeviceApplications

　　• Provides Cross-point MUX for Low Speed SBUPins

　　• Bidirectional "Mux/De-Mux" Differential Switch

　　• Supports Common Mode Voltage 0-2V

　　• Low Power with 1-μA Shutdown and 0.6 mAActive

　　• Single Supply Voltage VCC of 3.3V ±10%

　　• Industrial Temperature Range of –40 to 85℃

　　HD3SS460应用:

　　• Flippable USB Type-CTM Ecosystem

　　• Tablets, Laptops, Monitors, Phones

　　• USB Host and Devices

　　• Docking Stations

　　图1. HD3SS460功能框图

　　评估板USB Type-C™ Mini Dock EVM

　　The USB Type-C and Power Delivery (PD) mini-dock evaluation module (EVM) provides a completereference solution for a USB Type-C dock including audio, USB data, power, and video. The EVM has asmall 2 in × 4 in form factor and supports both source and sink power capabilities over the primary USBType-C PD port. Video output capabilities include both DisplayPort and HDMI.

　　评估板USB Type-C™ Mini Dock EVM主要特性:

　　DisplayPort™ to HDMI

　　Bi-Directional Power Capabilities

　　DRP Full-Featured USB-C & PD Port

　　Dual Video (up to 4K) via HDMI or miniDP

　　Flash Update over Type-C

　　图.评估板USB Type-C™ Mini Dock EVM外形图

　　评估板USB Type-C™ Mini Dock 主要特性:

　　This section lists and details supported features of the EVM:

　　• Power

　　This EVM has the following bi-directional power capabilities:

　　– Externally powered by 20-V DC barrel jack (J31). Upon successful power contract negotiation, thedock can source up to 20 V at 3 A.

　　– Externally powered by a USB Type-C Charger (J30). Upon successful power contract negotiation,the dock can source 5 V at 3 A or 12–20 V at 5 A.

　　– Bus-powered from USB Type-C laptop. Upon successful power contract negotiation, the dock cansink 5 V at 3 A or 12–20 V at 3 A.

　　D823 or D822 blue LED turns on to indicate if a 20-V or 5-V power input is connected.

　　• DRP Full-Featured USB-C and PD Port

　　– TUSB8041 HUB with upstream connection via HD3SS460 alternate mode switch

　　– USB-C DFP using TUSB321 and HD3SS3212

　　– USB Type-A DFP

　　– 3.5-mm audio jack

　　• Dual Video (up to 4K) via HDMI or miniDP

　　• Flash Update Over USB Type-C via USB 2.0 Endpoint

　　• LEDs

　　评估板USB Type-C™ Mini Dock EVM材料清单: