4 Design Complexity

The TPS543620 series is a discrete converter option that provides additional design flexibility, with the inductor being changeable to directly meet one's individual needs. However, to effectively use this versatility, power design knowledge is required. A module component, on the other hand, such as the TPSM843620 family, can enable an easier time to design/validate a workable design. Using power modules vs using converters can also take less time to design and create than a converter, reducing total time to market and development costs.

There are a few advantages of the TPSM843620 family that allow for a simpler design. The module package is subjected to extensive testing and characterization to make sure that the component is compatible with many designs. This allows design engineers to easily figure out and account for the characteristics such as thermals without any extensive testing. The TPSM843620 family is subjected to thermal characterization and the data is also recorded in the data sheet for design reference. Data such as the module’s thermal at different power conditions and potential derated performance can be useful for simplifying the thermal design process.

While the TPS543620 family provides greater flexibility at the expense of a more complex design than the module equivalents, there are additional hazards associated with the addition of more parts to the BOM that must be considered. As the number of components increases, so does the ordering complexity for procurement. A more complex sourcing process carries more risks, such as reduced reliability in shipping and delivery periods. This is an important component to consider while creating a design.

Figure 4-1 TPSM843620 Thermal Image