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
Output power protection
Power management (8)
Ideal diode/ORing controllers
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LM74700D-Q1—Automotive, 3.2-V to 70-V, 80-µA reverse battery protection ideal diode controller
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LM5050-1—5-V to 75-V 400-uA IQ ORing FET controller
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LM5050-2—6-V to 75-V 400-uA IQ ORing FET controller
AC/DC & DC/DC controllers (external FET)
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UCC39002—Advanced 8 pin load share controller, 0°C to 70°C
MOSFETs
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CSD18532KCS—60-V, N channel NexFET™ power MOSFET, single TO-220, 4.2 mOhm
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CSD13381F4—12-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6mm, 180 mOhm, gate ESD protection
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CSD17570Q5B—30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 0.92 mOhm
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CSD19536KTT—100-V, N channel NexFET™ power MOSFET, single D2PAK, 2.4 mOhm
Amplifiers (24)
Analog current-sense amplifiers
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INA296A—-5-V to 110-V, bidirectional, 1.1-MHz 8-V/µs ultraprecise current sense amplifier
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INA241A—-5-V to 110-V bidirectional ultraprecise current sense amplifier with enhanced PWM rejection
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INA293—-4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier
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INA281—-4-V to 110-V, 1.3-MHz, high-precision current sense amplifier
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INA240—-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection
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INA210—26V, bi-directional, high-precision current sense amplifier
Comparators
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TLV7031—Nanopower, small size comparator with push-pull output
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TLV7041—Nanopower, small size comparator with open-drain output
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TLV9032—Dual precision comparator with push-pull output
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TL331—High Voltage Single Differential Comparator
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TLV3511—6ns push-pull comparator with rail-to-rail inputs
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LM2901B—36-V, quad differential standard comparator
Precision op amps (Vos<1mV)
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OPA197—Single, 36-V, precision, rail-to-rail input output, low offset voltage op amp
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OPA2197—Dual 36-V, precision, rail-to-rail input output, low offset voltage op amp
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OPA333—Micropower, 1.8-V, 17-µA zero-drift CMOS precision operational amplifier
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LMC6482—Ultra-low Bias Current, Precision CMOS Rail-to-Rail Input and Output Dual Operational Amplifier
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OPA340—Single, single-supply, rail-to-rail, low power operational amplifier
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TLC2272A-Q1—Automotive Catalog Advanced LinCMOS™ Rail-to-Rail Operational Amplifiers
General-purpose op amps
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TLV9302—Dual, 40-V, 1-MHz, low-power operational amplifier
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LM2904B—Dual, 36-V, 1.2-MHz operational amplifier with -40°C to 125°C operation
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OPA2991—Dual, 40-V, 4.5-MHz, low-power operational amplifier
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LM2902B-Q1—Automotive, quad 36V 1.2MHz operational amplifier
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OPA990—Single, 40-V, 1.1-MHz, low-power operational amplifier
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LM358B—Dual, 36-V, 1.2-MHz, 3-mV offset voltage operational amplifier with -40°C to 85°C operation
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TIDA-01141—Shunt-Based, <1% Accurate, ±100A, High-Side, Bi-directional Current Measurement Reference Design
Technical documentation
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