AMS has developed a pair of chips that can transfer charging current and data simultaneously over the same pair of wires – intended as an interface for wireless earbud charging. The interface, branded Pow:Com, supplies 5V at up to 150mA for charging and data at 1kbit/s. AS3442 is aimed at the charger cradle (WL-CSP16 package). It ...
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from Electronics Weekly https://www.electronicsweekly.com/news/products/power-supplies/charging-data-two-wire-bus-portables-2018-09/
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