Power Integrations First with Qualcomm Quick Charge 2.0 Reference Design

Power Integrations, Inc. today introduced the first reference design for a Qualcomm® Quick Charge 2.0-enabled charger power supply. Launched earlier this year, the Quick Charge 2.0 protocol from Qualcomm Inc. 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 TOPSwitchâ„¢-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 2A. The TOPSwitch-JX IC maintains virtually constant efficiency across a very wide range of output voltages and current load conditions.

Comments Peter Vaughan, director of application engineering at Power Integrations: “DER-381 shows, for the first time, how a Quick Charge 2.0 charger power supply can be successfully implemented using the latest generation of Power Integrations’ switcher and interface ICs and simple optocoupler feedback.”