I found some documentation about it but not exactly what I want:
Charge a laptop without explicit USB PD capability using USB PD
电池通过USB- c充电(使用USB-PD?)我说的不是在USB-C端口上的插件,而是在通常的DC-IN笔记本输入端口上。
我有一个合适的100W充电器,我还买了一个USB-C - dc电源适配器。它会起作用吗?它安全吗?谢谢
USB触点当闪光镀金时会烧坏并变热,或者像闪电连接器的情况一样,将黄金烧坏为黑色,然后烧坏铜衬底,即使是5V到iPad,有几百个电涌连接。
但如果在接触后协商需求电流,这将抵消电弧电流
B. the output voltage and current (or power) specifications of the "USB-C - DC-IN power adapter" must be compatible with the laptop charging input specifications. Does this power adapter have a switch to select the DC output voltage? and if yes, can it output 20V or 19.5V? Selecting the proper output voltage is absolutely required. Also what type of cable will be used from the power adapter to the laptop DC input port, and what is it's rated max current? Many modern laptops require an electronic ID signal from their power supply (in addition to the DC power) to validate how much power is available. Does your laptop require such a signal? My laptop will operate from a DC input of the correct voltage, but does not charge the battery without the proper electronic ID present.
C. Assuming the USB-PD to DC power adapter is a "USB-PD trigger device" that simply requests/negotiates a certain voltage from the USB-PD power supply and then passes the VBUS power straight through to a DC load, the USB-PD supply itself must be able to supply the required 19.5VDC (or 20V). Check the specifications of the USB-PD charger for supported output modes, although all USB-PD chargers supplying over 50W should support a 20V output mode.