Introducing the fifth generation of Qualcomm Quick Charge 5 with a power of 100 watts

Introducing the fifth generation of Qualcomm Quick Charge 5 with a power of 100 watts

Introducing the fifth generation of Qualcomm Quick Charge 5 with a power of 100 watts

News unit Almost two weeks ago iQOO brand from below Collections of Vivo from its 120-watt charger named Super FlashCharge with a power of 120 watts. From iQOO – 4,000 full battery charge in 15 minutes”>unveiled and almost at the same time the 125W flash charge wired charger Oppo Lenovo Legion Phone Duel was unveiled with a 90W charger that promised a new future for fast charging of mobile phones. Now, Qualcomm, which is one of the pioneers of the fast charging industry, on Monday, July 27, 2020 (August 6, 2019), introduced its latest technology in this field, Quick Charge 5 introduced which has experienced a big leap compared to previous generations with an output power of more than 100 watts.

Technology Qualcomm’s Quick Charge has undergone major changes in recent years, from 10W in Quick Charge 1.0 to 18W in Quick Charge 3.0, and finally reached 27W in the new 4th generation variant based on USB-PD. In fact, Qualcomm’s new success in this field should be attributed to the use of the PD-PPS standard (programmable power supply based on USB Power Delivery or USB Power Delivery Programmable Power Supply) and the latest technological advances in the construction of charging circuits; Where, while reaching an output power of more than 100 watts, the temperature of the battery is 10 degrees lower than before and its efficiency has been improved by 70%.

In Quick Charge 5, Qualcomm has once again changed the design and architecture of the power control IC (PMIC), which has increased the speed and quadrupled the output power of the charger. An important turn in Qualcomm’s approach to this technology is to abandon the brand’s usual fast charging process and use the accepted standard of Power Delivery or USB-PD, which began with the latest version of Quick Charge 4 and was repeated in the fifth version as well. Thus, Quick Charge 5 can be called the natural evolution of the fast charging process based on the USB-PD PPS standard, which was already used in QC4, but its voltage regulation protocol was not fully used at that time.

In the USB-PD PPS standard, the high-speed charging architecture has faced structural and important changes, including the transfer of some power management ICs (PMICs) from the phone to the charger, which creates more complexity and leads to More flexibility in voltage can be provided from the side of the charger. In the same way, some other important and vital elements of fast charging have been transferred from the phone to the charger.

Like other fast charging technologies introduced in recent days and weeks, Quick Charge 5 also takes advantage of two separate and independent batteries that are connected in series to achieve its highest output power, and thus It is possible to increase the system voltage from 4.4 volts to 8.8 volts at once. This feature also ends one of the main limitations of fast charging in mobile phones, i.e. the maximum current passing through connection cables, because most of the usual cables used for the charging process only support 3 to 5 amp current passing, and now with the possibility of increasing There is no need to change the voltage in the connection cable to increase the power. In other words, while the maximum input voltage of ordinary lithium battery cells is 4.4 volts, for two separate batteries with a total voltage of 8.8 volts, by adding a 2.1 conversion switch, it is possible to reach 17.6 volts and a current of 5.6 amps. 100 watts is provided. Of course, this current is still not supported in most of the usual cables, so maybe this 100 watt power will remain only on paper, at least at the beginning, and practically, with the current of 3 amps of the usual cables, we will achieve a power of nearly 53 watts.

According to Qualcomm, a 4,500 mAh battery under this new standard can charge from zero to 50% in just 5 minutes, and the entire charging process takes only 15 minutes. This process, of course, as mentioned, requires the conversion of the above battery into two separate 2,250 mAh batteries, during which the injection voltage to the assembly increases.

The new QC5 chargers support a wide range of voltage outputs from 3.3 to 20 volts, and in terms of current, they will need to support values ​​between 3.3 and 5 amps and beyond. Despite the use of USB-PD PPS, this new standard is also compatible with previous generations of Quick Charge and can be used to quickly charge devices with Quick Charge 2 and newer versions. The presence of Power Delivery technology will also be a guarantee for the perfect operation of QC5 chargers with devices compatible with USB-PD, among which, for example, smartphones Apple from iPhone 7 pointed this way.

According to Qualcomm, the new QC5 fast charging system is equipped with 8 different levels of voltage protection, 3 current protection layers, 3 thermal levels and 3 protection timers. Voltages beyond 25V are even safer than normal Power Delivery. As another interesting feature in this section, we should mention the charge control chip inside the phones that support QC5, which blindly does not trust the announcement of support for the USB-PD protocol of the charger and measures the maximum current passing through the charger before starting the charging process. And during the charging process, it also monitors the generated heat.

The two charge control chips SMB1396 and SMB1398 designed for this technology support both wired and wireless charging technologies and depending on the design and needs of the manufacturer, they can be used in single battery and two battery configurations, although It goes without saying that in the first case we face a lower output power (apparently 45 watts). The first phones equipped with this new fast charging technology will be released in the third quarter of this year and while both processors Snapdragon 865 and Snapdragon 865 Plus support this feature on paper, but will need the aforementioned SMB chips to take advantage of this feature.

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