Supercapacitor Backup Power Supply with Active Cell Balancing Reference Design

(ACTIVE) PMP9766

Description & Features

Technical Documents

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Key Document

Description

This reference design describes a backup power circuit which addresses instantaneous protection against power interruptions by using a buck-boost converter and two stacked supercapacitors. The implementation is based on a completely integrated TPS63020 buck-boost converter circuit enabling a small total solution size. The design also provides an active cell balancing circuit. This configuration has been tested with a full test report and operation explanation.

Features
  • No glitches at the automatic transition from main power to backup power operation
  • Active cell balancing
  • Backup-capacitor type and size are selectable to meet backup power needs
  • Up to 15 Watt output power
  • Small and high efficiency single converter solution
  • Support of pulsed loads connected to a weak supply

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP9766.1
(Output Voltage 1)
Vin (Min) (V)3
Vin (Max) (V)5
Vout (Nom) (V)3.3
Iout (Max) (A).5
Output Power (W)1.65
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck Boost- Integrated Switch

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LP2998  1.5A DDR Termination Regulator with Shutdown Pin  Power Management  Sample & Buy View Design Kits & Evaluation Modules
TPS63020  High Efficiency Single Inductor Buck-Boost Converter with 4A Switch  Buck/Boost, Inverting or Split-Rail  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Application notes (1)
Title Abstract Type Size (KB) Date Views
PDF 218 11 Dec 2014 545
User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 429 22 Sep 2015 596
Design files (5)
Title Abstract Type Size (KB) Date Views
ZIP 330 29 Sep 2015 48
PDF 382 29 Sep 2015 49
PDF 308 29 Sep 2015 65
PDF 101 29 Sep 2015 66
PDF 429 29 Sep 2015 389
Related Tools & Software

Reference Designs (2)



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