Confused with fast charging and PD

[FreshmanNewbie]

My question is regarding mobile and laptop charging.

I have recently gone through many products (mobiles and laptops) and the USB standards.

All are confusing as they speak about fast charging and USB PD. I am getting confused.

Can someone tell me whether USB PD implies fast charging or am I missing to understand something?

 

[D.A.(Tony)Stewart]

Ref. here is good.

USB Charger (USB Power Delivery) | USB-IF

www.usb.org

 

[KlausST]

Hi,

USP PD is a standard, published on USB.org. Please read it.
It is a power delivery standard. It has nothing to to with charging so far.

But you are free to use this power to charge a battery .. if you connect an according device to the USB PD.
If you want to know about fast charging you need to read the documentation of the according device.

Klaus

 

[D.A.(Tony)Stewart]

The interface protocols are more flexible.

https://www.microchip.com/en-us/software-library