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  • Qualcomm Quick Charge 2.0

    In the Quick Charge spirit of saving you time, Qualcomm Quick Charge 2.0, a super-fast battery charging technology, can charge devices up to 75% faster than a conventional charger. Traditional USB charging is limited to 5 volts and less than 2 amps. In addition, the actual power available for battery charging will be less than 7.5 watts, taking into account losses in the system as well as cables and connector.

    Unlike conventional USB charging methods, a Quick Charge 2.0 end-to-end solution takes advantage of higher power levels to quickly and effectively charge devices. Quick Charge 2.0 Class A can provide up to 24 watts over a micro USB connector, 36 watts with a Type-C connector, and Class B can reach 60 watts or more. Future charging advancements are expected to show even further improvement.


    With multiple levels of voltage limiting, current limiting and temperature protection, Qualcomm Quick Charge 2.0 is uniquely designed to ensure healthy battery life cycles regardless of connector. All of this is integrated in Quick Charge 2.0 components – no need for external ones.


    Implementing Quick Charge 2.0 is often a simple, low-cost charging solution. It’s already implemented into many Qualcomm Technologies PMICs (power management integrated circuits), where it is verified and tested for a mobile device, whereas other solutions require more space on the PCB for extra circuitry.


    This patented technology is designed to use noise-free data lines for effective handshaking and communication, while enabling high-efficiency transfer of electricity. Qualcomm Quick Charge 2.0 is fast, effective and follows a comprehensive certification process. And new, exciting technologies for battery management are still to come as Qualcomm Quick Charge delivers improved charging solutions for smartphone users.

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  • Qualcomm Quick Charge 3.0

    Quick Charge 3.0 is engineered to refuel devices up to four times faster than conventional charging. Qualcomm Quick Charge 1.0 is able to charge up to 40% faster than conventional charging. Quick Charge 2.0 increased the charge time advantage up to 75%. And Quick Charge 3.0 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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  • USB Type-C

    USB Type-C is a specification for a small 24-pin reversible-plug connector for USB devices and USB cabling. The USB Type-C Specification 1.0 was published by the USB Implementers Forum and was finalized in August 2014. It was developed at roughly the same time as the USB 3.1 specification, but distinct from it.

    The Type-C connectors connect to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof. The 24-pin double-sided connector is similar in size to the micro-B connector, with a Type-C port measuring 8.4 millimetres (0.33 in) by 2.6 millimetres (0.10 in). The connector provides four power/ground pairs, two differential pairs for non-SuperSpeed data (though only one pair is populated in a Type-C cable), four pairs for high-speed data bus, two "sideband use" pins, and two configuration pins for cable orientation detection, dedicated biphase mark code (BMC) configuration data channel, and VCONN +5 V power for active cables. Connecting an older device to a host with a Type-C receptacle requires a cable or adapter with a Type-A or Type-B plug or receptacle on one end and a Type-C plug on the other end. Legacy adapters with a Type-C receptacle are "not defined or allowed" by the specification, due to their being able to create "many invalid and potentially unsafe" cable combinations.


    Full-featured Type-C cables are active, electronically marked cables that contain a chip with an ID function based on the configuration channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. Type-C devices may optionally support bus power currents of 1.5 A and 3.0 A (at 5 V) in addition to baseline bus power provision; power sources can either advertise increased USB current through the configuration channel, or they can support the full power delivery specification using both BMC-coded configuration line and legacy BFSK-coded VBUS line.


    Alternate modes dedicate some of the physical wires in the Type-C cable for direct device-to-host transmission of alternate data protocols. The four high-speed lanes, two sideband pins, and (for dock, detachable device and permanent cable applications only) two non-SuperSpeed data pins and one configuration pin can be used for alternate mode transmission. The modes are configured using VDMs through the configuration channel.

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  • Qi is an interface

    Qi is an interface standard developed by the Wireless Power Consortium for inductive electrical power transfer over distances of up to 4 cm (1.6 inches). The Qi system comprises a power transmission pad and a compatible receiver in a portable device. To use the system, the mobile device is placed on top of the power transmission pad, which charges it via resonant inductive coupling.

    Under the Qi specification, "low power" for inductive transfers denotes power deliveries below 5 W. Systems that fall within the scope of this standard are those that use inductive coupling between two planar coils to transfer power from the power transmitter to the power receiver. The distance between the two coils is typically 5 mm. It is possible to extend that range to at least 40 mm. Regulation of the output voltage is provided by a digital control loop where the power receiver communicates with the power transmitter and requests more or less power. Communication is unidirectional from the power receiver to the power transmitter via backscatter modulation. In backscatter modulation, the power-receiver coil is loaded, changing the current draw at the power transmitter. These current changes are monitored and demodulated into the information required for the two devices to work together.

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