Battery backup unit (BBU)
Products and reference designs
Battery backup unit (BBU)
Overview
Our integrated circuits and reference designs help you create high efficiency, high power density AC/DC and DC/DC battery backup units (BBUs) for various server power supply units (PSU), telecom PSU and industrial applications.
Design requirements
Modern BBUs often require:
- Fast charging to backup mode transition.
- High power density to pack more power in less space.
- High efficiency to extend battery backup time.
Block diagram
Find products and reference designs for your system.
Analog-controlled BBU
Battery monitoring & protection
Battery management ICs (18)
Battery fuel gauges
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BQ34Z100-R2—Multichemistry Impedance Track™ stand-alone fuel gauge
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BQ41Z90—3 to 16 series Li-ion highly integrated battery fuel gauge, monitor and protector
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BQ33100—Fully integrated, single chip, super capacitor health manager
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BQ40Z80—2-s to 6-s battery pack manager with Impedance Track™ gas gauging
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BQ40Z50-R2—1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0
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BQ78350-R1A—CEDV li-ion gas gauge and battery management controller
Battery monitors & balancers
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BQ79731-Q1—Automotive high-voltage battery pack monitor with voltage, current and insulation resistance sensing
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BQ79616—16-S precision battery monitor, balancer and integrated protector with stacking interface
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BQ76972—3s-to-16s high-accuracy battery monitor and protector for Li-ion, Li-poly and LiFePO4
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BQ76952—3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
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BQ79600-Q1—Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
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BQ76925—Analog front end for 3 to 6 series lithium-ion cells
Battery protectors
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BQ77216—Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer
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BQ2947—Lithium-ion protection for accurate cell-by-cell voltage monitoring
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BQ77915—3-series to 5-series stackable ultra-low-power primary protector with autonomous cell balancing
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BQ76200—High-side n-channel FET driver
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BQ7718—Family 2-5S Overvoltage Protector with Internal Delay Timer
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BQ2961—2-4S Overvoltage Protector with LDO Output
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TIDA-00449—10s Battery Pack Monitoring, Balancing, and Comprehensive Protection. 50A Discharge Reference Design
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TIDA-010030—Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design
Technical documentation
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