Power Integrations releases Qualcomm Quick Charge 2.0 smartphone charger reference design
Launched earlier this year, the Quick Charge 2.0 protocol from Qualcomm enables users to charge mobile devices, such as tablets and cellphone handsets, up to 75% faster than when using conventional USB charging technology.
Power Integrations has developed the ChiPhy family of AC-DC wall-charger interface ICs which, when combined with the company’s AC-DC switcher ICs, incorporates all of the necessary elements to add rapid charging functionality to AC-DC wall chargers. The CHY100 IC 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. When plugged into a five-volt USB-powered device without Quick Charge 2.0 capability, CHY100 IC automatically disables the higher-voltage capability to ensure safe operation and backwards compatibility with older hardware.
An evaluation platform for ChiPhy ICs, DER-381 describes a CV/CC charger power supply capable of up to 24 W utilizing TOPSwitch-JX switcher and CHY100D interface ICs. The PSU operates from universal input and provides selectable output voltages (5 V, 9 V, and 12 V) with a maximum constant current of 2 A. The TOPSwitch-JX IC maintains virtually constant efficiency across a wide range of output voltages and current load conditions.
More information about the DER-381 evaluation platform at
www.powerint.com/sites/default/files/PDFFiles/der381.pdf
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