Subject: Mobile | November 17, 2016 - 07:30 AM | Ryan Shrout
Tagged: snapdragon 835, quick charge 4, Quick Charge, qualcomm
Along with the reveal of the Snapdragon 835 today and its production on Samsung’s 10nm FinFET process technology, Qualcomm is also announcing the release of Quick Charge 4, an upgrade to the company’s successful fast charging solution that improves both efficiency and performance. Based on the information provided by Qualcomm, Quick Charge 4 will offer “premium phone users” some impressive charging rates.
- 5 hours or more of use in 5 minutes of charging
- 50% battery charge in 15 minutes or less
Those time metrics are based on talk time, not VR playback or gaming or browsing, meaning you can get 5 hours of additional talk time in 5 minutes of Quick Charge 4 charging time. While I think other battery life metrics (like browsing time, idle time) would provide additional context for these claims, even these numbers should impress potential buyers.
Using an updated version of its voltage negotiation protocol INOV 3.0 (intelligent negotiation for optimal voltage), Quick Charge 4 will intelligently determine what voltages are available from the compatible charger and which voltage is the most appropriate based on temperatures and current battery state. QC 4 will offer 5V, 9V and 12V charging options at 3-5A!
Quick Charge 4 will offer 30% higher efficiency along with the 20% faster charging and integrates support for USB Type-C connections and USB-PD support. (Which is important based on the noise Google has been making recently.) New PMICs (power management ICs) from Qualcomm, the SMB1380 and SMB1381, will be shipping this year and deliver low impedance peak efficiency of up to 95%.
And of course, no smart phone platform launch will go by for the foreseeable future that doesn’t mention safety.
In addition to providing the most consistent in-box and out-of-box charging experience, Quick Charge 4 comes with advanced safety features for both the adapter and mobile device. Protection is implemented at multiple levels and throughout the entire charging process to more accurately measure voltage, current, and temperature while protecting the battery, system, cables and connectors. An additional layer of protection is also being added to help prevent battery over-charging and regulate current throughout every charge cycle.
It’s worth noting that Quick Charge 4 won’t be limited to only the Snapdragon 835 processor, though other integrations haven’t been announced just yet. I have a feeling we will hear more at CES in January. The Quick Charge ecosystem has been steadily growing with hundreds of charging accessories and devices shipping today with QC3/QC2 and I expect that will continue with Quick Charge 4.
Subject: Mobile | September 24, 2015 - 07:55 PM | Sebastian Peak
Tagged: usb, snapdragon 820, Quick Charge 3.0, Quick Charge, qualcomm, mobile, battery charger
Qualcomm has announced Quick Charge 3.0, the latest iteration of their fast battery charging technology. The new version is said to not only further improve battery charging times, but also better maintain battery health and reduce temperatures.
One of the biggest issues with fast battery charging is the premature failure of the battery cells; something my first Nexus 6 (which was replaced due to a bad battery) can attest to. The new 3.0 standard adds "Battery Saver Technology" (BST) which constantly varies the current delivery rate based on what the battery can safely accept, thus preventing damage to the cells. This new version of Quick Charge also claims to offer lower temps while charging, which could be partly the result of this variable current delivery.
The other change comes from "Intelligent Negotiation for Optimum Voltage" (INOV), which can vary the voltage delivery anywhere from 3.6V to 20V in 200mV increments depending on the device's negotiated connection. INOV will allow Quick Charge 3.0 to charge a full 2x faster than the original Quick Charge 1.0 (it's 1.5x faster than QC 2.0), and 4x over standard USB charging as it provides up to 60W to compatible devices.
This new Quick Charge 3.0 technology will be available soon with devices featuring upcoming Qualcomm SoCs such as the Snapdragon 820.