ZHCSLU2B December 2021 – October 2023 LM63460-Q1
PRODUCTION DATA
The choice of switching frequency is a compromise between conversion efficiency and overall solution size. Lower switching frequency implies reduced switching losses, resulting in higher system efficiency and less power dissipated in the converter. However, higher switching frequency enables the use of smaller inductors and capacitors, enabling a more compact design.
Many automotive applications require that the AM radio band be strictly avoided. Such applications tend to operate at either 2.1 MHz or 400 kHz, above and below the AM band, respectively. To achieve small solution size, set the LM63460-Q1 switching frequency at 2.1 MHz for this application example by installing a 6.04-kΩ resistor from RT to GND.