Texas Instruments claims its latest lithium-ion battery charger IC can reduce charge time by 50% in smartphones and tablets compared to today's designs.
The bq2419x family of 4.5A output, 20V input-rated switch-mode chargers have a I2C interface and USB On-the-Go is supported, and so the IC can also be used in power packs for 4G LTE routers and portable medical designs.
According to TI, the fast-charge devices reduce charge time through battery path impedance compensation. "There is also programmable thermal management capability to ensure safe and reliable system operation," said the company.
The switch-mode charger achieves 92% efficiency at 2A and up to 90% efficiency at 4A of output current, said TI.
Source:
http://www.electronicsweekly.com/Articles/2013/03/26/55837/ti-claims-chip-will-cut-smartphone-charge-time-in-half.htm
