Battery backup unit (BBU)

Products and reference designs

Battery backup unit (BBU)

Block diagram

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 Battery Backup DC/DC power stage Backup DC/DC power stage Gate driver Gate driver Buck controller Buck controller LV MOSFET LV MOSFET Amp Amp Comp Comp Output protection Output protection ORing ORing Hot swap Hot swap LV MOSFET LV MOSFET Communication interface Communication interface I2C transceiver I2C transceiver Ethernet Ethernet Digital isolator Digital isolator LDO LDO Charging DC/DC power stage Charging DC/DC power stage Gate driver Gate driver Boost controller Boost controller LV MOSFET LV MOSFET Amp Amp Comp Comp Control Control MCU MCU VREF VREF Comp Comp LDO LDO Supervisor/ reset Supervisor/ reset Logic gate Logic gate MEMORY MEMORY Battery monitoring and protection Battery monitoringand protection Fuel gauge Fuel gauge Protection and authentication Protection and authentication

Technical documentation

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Type Title Date
More literature Bi-directional DC/DC converter topology comparison and design (PPT) 30 Aug 2016
Technical article Fast and furious: designing longer-lasting 16S-17S Li-ion battery packs for e-moto PDF | HTML 23 Jun 2023
Technical article Digital power control advances GaN PFC design PDF | HTML 14 Aug 2023
Technical article For efficiencies’ sake – how to integrate bidirectional power flow (part 2) PDF | HTML 11 Aug 2023
Analog Design Journal Multimode control for a four‐switch buck‐boost converter 08 Jan 2019

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