My answer to How does the Qualcomm Quick Charge 2.0 work?

Answer by Allen He:

Quick Charge is the next generation of fast charging technology for devices like Smartphone, Smart Power Bank etc. Quick Charge Means Less time charging, More time doing. Here i Collect Top 5 mainstream Quick Charge solutions: Qualcomm Quick Charge , MTK Pump Express, TI MaxCharge, USB 3.1 PD and OPPO VOOC Flash Charge.

1.Qualcomm Quick Charge

Quick Charge 3.0 is engineered to refuel devices up to four times faster than conventional charging. It is designed to charge twice as fast as Quick Charge 1.0 and to be 38 percent more efficient than Quick Charge 2.0. Now consumers can spend even less time charging, and can grab and go more quickly.

How does it work? Quick Charge 3.0 employs Intelligent Negotiation for Optimum Voltage (INOV), an algorithm which allows your portable device to determine what power level to request at any point in time, enabling optimum power transfer while maximizing efficiency. It also supports wider voltage options, allowing a mobile device to dynamically adjust to the ideal voltage level supported by that specific device. Specifically, Quick Charge 3.0 offers a more granular range of voltages: 200mV increments, from 3.6V to 20V. That way your phone can target one of dozens of power levels.

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About Quick Charge I recommend you read my blog article: What is Quick Charge? by Allen He on Charging Station

How does the Qualcomm Quick Charge 2.0 work?