The difference between USB PD 2.0 and 3.0 clearly explained

With USB Power Delivery (PD) Not only did it become possible to charge the battery of smartphones, tablets and similar devices in a short time using the quick charge function. Thanks to the maximum output of 100 watts (20 volts at 5 amperes), even laptop batteries and batteries from other "large devices" can be charged with a USB charger. However, there are now different generations of USB PD on the market, mostly with a USB-C connector for the USB-C or Thunderbolt 3 socket on the device. What the Difference between USB PD 2.0 and USB PD 3.0 is, you can find out here.

The difference between USB PD 2.0 and USB PD 3.0 is explained here in an understandable way. What does the comparison of USB-C Power Delivery of the two generations show? Basically just a more extensive exchange of information.

The difference between USB PD 2.0 and USB PD 3.0 is explained here in an understandable way. What does the comparison of USB-C Power Delivery of the two generations show? Basically just a more extensive exchange of information.

USB PD 2.0 and 3.0 in comparison

The difference between the two versions of USB Power Delivery (also called USB-C Power Delivery because of the connection) is how much information is exchanged between the charger and the connected device. While both versions communicate the maximum performance for the fast charging process, USB PD 2.0 is mainly limited to this exchange. 

With USB PD 3.0, information on the charging status of the device battery, failures, overvoltage, battery temperature and / or other details is also exchanged. This makes it possible to adapt the charging process to certain factors. Errors and system changes are therefore taken into account when charging the battery when using USB PD 3.0. 

In addition, the device can inform the user if there is an irregularity - for example a message if certain factors slow down the charging process, if there is too much voltage or too high a current. If the device transfers its charge level to the charger, this can reduce the power when the battery level is high in order to charge the last percent of the battery more slowly. That saves the battery.

Both USB C PD 2.0 and USB C PD 3.0 deliver up to 100W at different voltages and currents. Possible levels for the voltage can be 5V, 9V, 12V, 15V and 20V. The latter uses 5A in order to achieve the power of 100W. It should be noted that these are nominal values ​​and that some values ​​may vary slightly. There are details among others at Wikipedia. 

What the PD generation does not provide any information about

If you are looking for information about USB, then a wide variety of terms and numbers fly around your ears. Most people can do something with USB-A and USB-C. Micro-USB (mostly used synonymously for USB Micro-B) is also known to many. The individual generations from USB 1.0 to USB4 also open up at some point. 

Power Delivery came along a few years ago, but says nothing about the shape of the connection or the one Specification of the data transmission out. As you can see above, there isn't even a difference in performance. The difference in the PD generations is currently only due to the transmission of information about the charging process.

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