PCB layout guidelines for MPC5674x switch mode power supply (SMPS)

Switched regulators have become popular for their improved efficiency and frequency response compared with equivalent linear regulators. A system based on switched supplies can provide significantly lower power consumption, and consequently allow reduced PCB area and a reduction in cost of external components.

The MPC5674F device provides an internal SMPS regulator that may be used to provide the V_DD voltage, eliminating the external V_DD supply. To ensure that the switched regulator operates as designed, it is important that the designer selects appropriate components and designs the PCB following some simple rules. A good PCB layout is of particular importance when using the switch-mode regulator.

View the PDF document for more information.