AC/DC wall-charger interface IC meets Quick Charge protocol

22 October 2013

Quick Charge 2.0 protocol charges tablets and mobile phone handsets up to 75% faster than conventional USB charging technology.

At the EuroAsia Press event, Power Integrations demonstrated its ChiPhy AC/DC wall-charger interface ICs, which detects commands from a Quick Charge 2.0-enabled device, and adjusts the output voltage of the AC/DC wall charger to deliver increased power to the device’s battery through a standard USB cable.

Even when plugged into a 5V USB-powered device without Quick Charge 2.0, the IC is able to automatically disable the higher-voltage capability for safety as well as backwards compatibility with older hardware.
A reference design, the DER-381, describes a CV/CC charger power supply capable of up to 24W using the company’s TOPSwitch-JX switcher and CHY100D interface ICs. The power supply operates from universal input and provides selectable output (5-, 9- and 12V) with a maximum constant current of 2A.

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