SLVSB10F July 2012 – November 2020 TPS54020
PRODUCTION DATA
The first step is to decide on a switching frequency for the regulator. There is a tradeoff between higher and lower switching frequencies. Higher switching frequencies can produce smaller a solution size using lower valued inductors and smaller output capacitors compared to a power supply that switches at a lower frequency. However, the higher switching frequency causes extra switching losses, which reduce the efficiency of the converter and thermal performance. In this design, a moderate switching frequency of 500 kHz is selected to achieve both a small solution size and a high efficiency operation.