Many power-IC announcements are made through the course of a year, which makes it very difficult to narrow a choice of "best" down to just one product. Nonetheless, the "fast charger" reference design developed jointly by Power Integrations and Cypress Semiconductor stood out in 2016. The technology has started to find its way into smartphones, and will no doubt see greater use in the near future. It's not the first fast-charger reference design developed by Power Integrations. The company previously introduced a reference design for a Qualcomm Quick Charge 2.0-enabled power supply, called the DER-381. It detects commands from a Quick Charge 2.0-enabled device using the TOPSwitch-JX switcher, CHY100D interface ICs, and an optocoupler feedback. The DER-381 can adjust the output voltage of the ac-dc wall charger to deliver increased power to the devices battery through a standard USB cable.
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