Microchip Technology has announced that it expanded its programmable USB-port power controller portfolio with the dual-channel UCS2112. The power 
Dual-channel USB Port Power Controllercontroller supports two ports, with eight programmable continuous current limits for each, ranging from 0.53 to 3.0 Amps enabling fast charging times at higher currents.
Features include integrated current monitoring, precision current limiting, charge rationing and dynamic thermal management. The UCS2112 targets devices such as laptops, tablets, monitors, docking stations and printers found in automotive, computing, education and aviation applications, multi-port charging accessories and storage. This device works individually or in concert with USB hubs.
Dynamic thermal-management throttles back the current limit as it approaches a thermal limit, preventing shutdown and allowing for charging to continue. An integrated current monitor eliminates an external sense resistor and delivers an attach-detect signal that does not need main power to be active for off or sleeping hosts.
The UCS2112 aligns with the USB Power Delivery initiatives and complies with various charging specifications, including the USB-IF BC1.2. The UCS2112 Evaluation Board, ADM00639, priced at $140, supports it. The UCS112 is available for sampling and volume production, housed in a 20-pin QFN package. Pricing starts at $1.80 each, in 5,000-unit quantities.
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