GreenPAK Supercapacitor Cell Balancing Reference Design Board
The SLG4SCBAL-DMO is a GreenPAK supercapacitor cell balancing reference design board. GreenPAK™ products are an ideal solution for performing many of the supporting...
GreenPAK™ products are an ideal solution for performing many of the supporting functions of supercapacitor-based systems.To effectively design with supercapacitors, supporting interface circuitry for the following functions is typically required:
Unlike dedicated ICs that are costly and specialized with limited capability, GreenPAK parts are competitively priced, can be quickly customized with programmable thresholds and timing, and eliminate many external setting components.
Find example supercapacitor interface circuits in the Related Resources section of this webpage, including a Design Toolkit application note and reference designs for supercapacitor active cell balancing and charging. Each of these resources has an associated open-source GreenPAK designer file that can be modified for any design.
Highlighted below are two of the many example functions that GreenPAK can be configured to do.
Supercapacitors that are rated for 5.5V are often a stack of two cells with a rated voltage of 2.7V each. Similarly, higher voltage supercapacitor modules (e.g. rated for 48V or more) have even more stacked cells to achieve their rated voltages. Cell balancing is required to ensure that each cell stays within its rated voltage because inevitable cell mismatches will cause overvoltage fault conditions during operation. A simple modular supercapacitor active cell balancing solution using GreenPAK is shown in Figure 1 and the corresponding GreenPAK design implementation is shown in Figure 2.
Figure 1. Supercapacitor Active Cell Balancing Circuit
Figure 2. GreenPAK Active Cell Balancing Implementation
A GreenPAK with integrated power switches can be configured to charge and discharge a 1-cell supercapacitor as shown in the Figure 3 circuit and corresponding Figure 4 GreenPAK design implementation.
Figure 3. 1-Cell Supercapacitor Charging Circuit
Figure 4. GreenPAK 1-Cell Charging Implementation
GreenPAK Supercapacitor Cell Balancing Reference Design Board available for purchase. Please email us at [email protected] to learn more details.
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