To save space in battery chargers, Texas Instruments has introduced a 6A three-level buck converter, the bq25910, aimed at phones, tablets and electronic point-of-sale devices. Charging single Li-ion or Li-polymer cells, 95.4% efficiency is available at 1.5A from a 5V input, or 93.3% at 3A from 9V. As well as four switching fets, there is ...
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from Electronics Weekly https://www.electronicsweekly.com/news/products/power-supplies/apec-tis-three-level-buck-converter-battery-charger-2018-03/
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