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Maxim's battery fuel gauge touts maximised capacity

Posted: 14 Mar 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Maxim Integrated? battery? fuel gauge? ModelGauge? smartphones?

Maxim Integrated Products has recently sampled out its MAX17050 battery fuel guage. Maxim's latest product uses the patented ModelGauge m3 algorithm, which improves upon the traditional coulomb counting approach by combining it with the patented voltage-based ModelGauge approach.

"The latest battery fuel gauge devices predict battery life, not only in terms of state of charge, but also in terms of remaining time-to-empty and battery health," said Susie Inouye, Research Director at Databeans.

"This is a critical factor in the performance of embedded battery-powered portable applications. Worldwide revenue for fuel gauge devices is growing at a compound annual growth rate of over 13 per cent,"added Inouye.

The MAX17050 provides the best possible accuracy, uses 4x less power, and shrinks solutions by 3x compared to competitive devices. The device is ideal for portable applications where battery capacity and state-of-charge accuracy is critical, including smartphones, tablets, mobile radios, battery backup, and portable medical/fitness equipment.

Battery fuel gauge designs often depend on coulomb counting technology. Although coulomb counting is highly accurate at first, it tends to drift over time. The MAX17050 uniquely integrates the short-term accuracy and linearity of a coulomb counter with the excellent long-term stability of a ModelGauge fuel gauge. The ModelGauge m3 technology makes continuous microcorrections and eliminates sudden jumps in a battery's state of charge (SOC). Users can trust the resulting battery capacity and state information, including the health and maximum battery usage. The MAX17050 functionality is also integrated into the company's TINI Power System-on-Chip (SoC) to make it easier to upgrade designs to more complex systems.

Datasheet for the MAX17050 can be found here.





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