Supercapacitor Backup Power Supply with Active Cell Balancing Reference Design
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 operationActive cell balancingBackup-capacitor type and size are selectable to meet backup power needsUp to 15 Watt output powerSmall and high efficiency single converter solutionSupport of pulsed loads connected to a weak supply
Applications
- Electricity meter
- Infusion pump
- Data concentrators
- Robot CPU and compute board
- CNC control
- Lab & field Instrumentation
- Laser distance meter
- DC fast charging station
- Battery energy storage system
- Mobile robot CPU & compute module
Product Categories
- Power management
| Title | Updated | Type | Size (KB) |
|---|---|---|---|
| High-Efficiency Backup Power Supply | 11 Dec 2014 | 218 |
| Download the bill of materials for PMP9766 | Download |
| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| PMP9766 Gerber | 29 Sep 2015 | ZIP | 330 | |
| PMP9766 PCB (3D) | 29 Sep 2015 | 382 | ||
| PMP9766 PCB | 29 Sep 2015 | 308 | ||
| PMP9766 BOM | 29 Sep 2015 | 101 | ||
| PMP9766 Schematic | 29 Sep 2015 | 429 |