Parallel Power Supplies: How to Increase Current
Connecting power supplies in parallel is a practical solution that allows users to increase available current while maintaining a stable
Firstly, you may need more current than a single power module provides. Using two modules in parallel, the current to the load can be effectively doubled. Paralleling can also reduce the number of different power module types used, by meeting higher power requirements with lower power modules in parallel.
A final reason is to reduce the number of different modules kept in stock by paralleling the same modules for different current and power needs across many program designs. This may also provide a lower cost advantage by earning higher quantity pricing discounts. However, not all modules can be paralleled.
In many test and industrial applications, a single power supply may not provide enough current to meet system demands. Connecting power supplies in parallel is a practical solution that allows users to increase available current while maintaining a stable voltage.
Due to their standardized packaging and pin configurations, brick power modules cannot incorporate additional circuits or digital controllers to achieve balanced power and current distribution in multi-module configurations. Therefore, a parallel current-sharing circuit is required to share current signals among multiple modules.
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