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Figure 1 The diagram shows voltage vs. current charging of lithium-ion battery cells. Source: Infineon If the source finds that it’s attached to a USB Type-C cable, it sends a Source_Capabilities message; a series of 32-bit power delivery objects (PDOs) specify each fixed voltage and maximum allowable current it can deliver. USB-C Power Delivery 3.0 (PD3.0) introduces a new Programmable Power Supply (PPS) mode, which allows a device to negotiate any supply of 3.3-21 V in 20 mV steps, and up to 5 A of current in 50 mA steps. To make use of this new standard, [Ryan Ma] create the PD Micro, an Arduino-compatible development board, and a self-contained software library to allow easy integration of PD3.0 and the older PD2.0 into projects. user. PDPs are a revamp of Power Profiles that now tell the user what the power supply can deliver in Watts; a higher value means more power. A PDP is the highest nominal voltage times the nominal current reported in fixed Power Delivery Objects (PDOs). Table 3 Charging times are compared between PD 3.0 and PD 2.0 ready mobile devices. Source: Infineon
USB PD3.0 (Power Delivery 3.0 ) is a power supply standard based on the USB Type-C interface. The maximum power supply can reach 100 W (watts). The connectors at both ends of the PD 3.0 compliant cable must be Type-C, which means that PD3.0 will not be applied to the common USB-A cable we used before, but only USB-C to USB-C Cable; With the popularity of the USB Type-C interface, more and more devices have begun to use the USB PD fast charging solution. For example: mobile phones, tablets, monitors, chargers, even lamps, electronic scales, small appliances, toys, etc.The power adapter also has safety features and protects your devices as it juices them. They are safe from overvoltage, short-circuiting, and overheating. In addition, it pushes 61W of power and can charge iPhones two hours faster than other chargers. But you need a USB-C to USB-C cable to activate the QC technology. 2. PD Pioneer 20000mAh 60W 2-Port Power Bank (RP-PB201) Samsung Galaxy S20 was the first phone certified for PPS fast charging, but there are three other devices that likewise support the standard: Samsung note10, Samsung S20 ultra, and Samsung S21. Can PPS Charge Laptops? Apple says the MagSafe charger will charge with any adapter greater than 12W, but at a reduced rate. Tests show around 10W or less when used with adapters below 20W. When the MagSafe charger negotiates for power it specifically looks for the 9V x 2.22A supply, which is only present in 20W PD 3.0 adapters — and only some with a greater power potential, given that it specifically needs that 9V x 2.22A supply. This is why it defaults to 5V x 2A when using the 18W adapter, and will do the same with most — but not all — existing 60W USB-C power adapters, resulting in slower charge speeds. The difference between the two types of PD charging lies in the amount of detailed information given by each.USB PD 3.0 has worked to improve its power delivery but is primarily known for offering increased amounts of information about the device being charged and its power/ battery. This includes reporting any malfunction or system change within the device, temperature of the device, or what may be causing hold ups or decreased charging speed, etc. For example, if an over-current or over-voltage occurs while charging, your device will notify you with a data message of the mishap.
While looking at various electronic devices, you may have seen the term “fast charging”. What does this have to do with PD 3.0 or QC 3.0? In a word, nothing. It’s simply a measurement of how fast a battery can charge. In general, a standard 1 amp charger charges at 5 watts, which is ordinary USB. Conversely, fast charging batteries can charge at 12 watts or higher.When it comes to tech, the general consensus is that smaller is better. This RAVPower charger with PPS fast charging is small in stature but big in performance. It was specifically designed for the iPhone 12 series and offers a total output of 20W. Infineon has two USB controller solutions that are suitable for implementing PPS chargers: CCG3PA and PAG1P + PAG1S. CCG3PA
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