SNVSBW0A October 2022 – October 2023 LM64460-Q1
PRODUCTION DATA
The converter can have two behaviors while lightly loaded. AUTO mode operation allows for a seamless transition between normal current-mode operation while heavily loaded and in highly efficient light-load operation. The other behavior, called FPWM mode, maintains full frequency even when unloaded. Which mode the converter operates in depends on the configuration of the MODE/SYNC pin. See Table 8-1. When using the LM64460-Q1, select the light-load behavior using the MODE/SYNC pin. Note that the converter operates in FPWM mode when synchronizing frequency to an external clock signal.
In AUTO mode, the converter employs two techniques to improve efficiency during light-load operation:
Note that while these two features operate together to create excellent light-load behavior, they operate independently of each other.