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1-Cell
to 3-Cell Switchmode Lithium-Ion Charger
bq24100 |
Single-Cell
Charger with Power Path Management
bq24030 |
Single-Cell,
8-Pin Battery Gas Gauge
bq26500 |
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| The
bq20z90 accurately reports the remaining capacity over
the
entire life of multi-cell battery packs. Current battery
management solutions do not calculate impedance as the
pack ages, resulting
in an error rate as high as 50% after a few months of use.
The bq20z90’s Impedance Track™ calculates changes
in impedance caused by battery age, temperature and cycle
patterns to predict remaining run-time within 1% accuracy
throughout the entire life of the battery. It maximizes system
run-time by enabling use of the full chemical capacity available
in the battery pack.
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| Many
gas gauging technologies depend on static modeling
techniques
that require the creation of large databases to measure
each attribute of available battery parameters. The
Impedance
Track’s dynamic modeling algorithm learns how much
a battery has degraded through age, temperature or usage
and then correlates typical chemical properties of the
anode/cathode system in the battery’s cell, no
matter what brand of battery cell is used. The patent-pending
Impedance Track reduces development and implementation
set-up time for a typical multi-cell battery pack from
approximately six hours down to one hour. |
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99%
accuracy over battery lifetime |
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• |
Instant
state-of-charge |
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Instant
accuracy—no learning cycle
required |
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• |
Full
array of programmable voltage,
current and temperature protection
features |
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Simple
implementation |
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• |
Telecom
systems |
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• |
Portable
medical equipment |
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Portable
industrial appliances |
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• |
Portable
instrumentation |
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• |
Test
equipment |
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• |
Notebooks |
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• |
Multi-cell
Li-Ion battery packs |
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• |
Tablet
PCs |
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