标准:usb:pd:start
差别
这里会显示出您选择的修订版和当前版本之间的差别。
两侧同时换到之前的修订记录前一修订版后一修订版 | 前一修订版 | ||
标准:usb:pd:start [2025/04/12 11:31] – [版本差异] hwwiki | 标准:usb:pd:start [2025/04/14 08:28] (当前版本) – [版本差异] hwwiki | ||
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===== 版本差异 ===== | ===== 版本差异 ===== | ||
+ | |||
+ | 根据如下三种Charging Models,列表区分如下。 | ||
+ | - Fixed Supply Charging Models:固定电压 | ||
+ | - Programmable Power Supply (PPS) Charging Models:可编程电压,电压步进幅度20mV。 | ||
+ | - Adjustable Voltage Supply (AVS) Charging Models:可调节电压,电压步进幅度100mV | ||
+ | * 备注:PPS和AVS的区别在于,在充电过程中,PPS的电压随时在调整,而AVS电压固定不变。 | ||
+ | |||
+ | | Fixed Supply Power Ranges | ||
+ | | Power Range | Available Current and Voltages | ||
+ | | Standard Power Range \\ (SPR) | 3A: 5V, 9V, 15V, 20V | 15-60W | ||
+ | |:::| 5A: 20V | > | ||
+ | | Extended Power Range \\ (EPR)\\ Optional | ||
+ | |:::| 5A: 20V | > | ||
+ | |:::| 5A: 28V, 36V, 48V | > | ||
+ | |||
+ | | PPS Voltage Power Ranges(Optional) | ||
+ | | Rev. || PD3.0 ||| PD3.1 ||| PD3.2 ||| | ||
+ | | Available Current | ||
+ | | 3A | 5V Prog | 3 | 5.9 | 15-60W | ||
+ | |:::| 9V Prog | 3 | 11 |:::| 3.3 | 11 |:::| 5 | 11 | 16-60W | ||
+ | |:::| 15V Prog | 3 | 16 |:::| 3.3 | 16 |:::| 5 | 16 |:::| | ||
+ | |:::| 20V Prog | 3 | 21 |:::| 3.3 | 21 |:::| 5 | 21 |:::| | ||
+ | | 5A | 20V Prog | 3 | 21 | 60-100W | ||
+ | |||
+ | | AVS Voltage Power Ranges | ||
+ | | Power Range | Rev. | PD3.2 ||| PD3.1/ | ||
+ | |:::| PDP | Minimum Voltage (V) | Maximum Voltage (V) | Maximum Available Current | ||
+ | | SPR | > | ||
+ | |:::| > | ||
+ | |:::| > | ||
+ | | EPR\\ (Optional) | ||
+ | |:::| > | ||
+ | |:::| > | ||
+ | |||
备注: | 备注: | ||
- | - PD2.0支持USB接口[[标准: | + | - PD2.0支持USB接口[[标准: |
- PD2.0支持TYPE-A/ | - PD2.0支持TYPE-A/ | ||
+ | - PPS由PD3.0引入,在所有版本中均是可选的(optional)。其兼容Quick Charge™(QC2.0/ | ||
+ | - SPR和EPR由PD3.1引入,EPR在所有版本是可选的(optional)。要能支持EPR需要先进入EPR Mode,进入流程见[[https:// | ||
+ | - AVS由PD3.1引入,SPR的AVS在PD3.2是必须支持的。 | ||
+ | - 表格整理自各[[标准: | ||
+ | |||
+ | PD3.2 Power Rules见下图[([[https:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | ===== 系统架构 ===== | ||
+ | |||
+ | 框图如下[({{ : | ||
+ | |||
+ | {{: | ||
+ | |||
+ | 备注: | ||
+ | - USB Type-C Port Control: USB Type-C state operation (attach/ | ||
+ | - Physical Layer: Port to Port over CC wire, Collision Avoidance | ||
+ | - Power Source/ | ||
+ | - Protocol Layer: Handles retries, message construction and chunking | ||
+ | - Policy Engine: Drives the Atomic Message Sequences | ||
+ | - Device Policy Manager : | ||
+ | * Handles PD across multiple ports | ||
+ | * Makes decisions on how to allocate power | ||
+ | * Talks to Power Source/Sink and Cable Detection | ||
+ | |||
+ | Provider(Source)和Consumer(Sink)之间通过CC线传递SOP*信息(BMC调制)协商PD供电。 | ||
+ | |||
+ | SOP*信息如下图所示[([[https:// | ||
+ | |||
+ | {{: | ||
+ | |||
+ | 备注: | ||
+ | - Source和Sink之间为SOP信息 | ||
+ | - 靠近Vconnn Source(负责供电给线材中的e-Marker)的为SOP' | ||
+ | - 与较远程e-Marker则为SOP" | ||
+ | |||
+ | |||
+ | PD支持以下USB设备[({{ : | ||
+ | |||
+ | {{: | ||
+ | |||
+ | 备注: | ||
+ | - DFP: Downstream Facing Port(下行端口,包括电源和USB数据通讯) | ||
+ | - UPF: Upstream Facing Port(上行端口,包括电源和USB数据通讯) | ||
+ | - DRD: Dual-Role Data Ports, DFP或UPF,两者之间切换 | ||
+ | - Source: 源(为负载提供电源,不包括USB数据通讯) | ||
+ | - Sink:负载(消耗电源,不包括USB数据通讯) | ||
+ | - DRP: Dual-Role Power Ports, Source或Sink,两者之间切换 | ||
+ | - 上述DFP、UPF等的识别,详见[[标准: | ||
+ | |||
+ | ===== 参考文献 ===== | ||
+ | |||
+ | - {{ : | ||
+ | |||
+ | |||
+ |
标准/usb/pd/start.1744428673.txt.gz · 最后更改: 2025/04/12 11:31 由 hwwiki