SNVSBW1C December 2021 – August 2024 LM63440-Q1 , LM63460-Q1
PRODUCTION DATA
Figure 8-21 shows the schematic diagram of a synchronous buck regulator with an output voltage set at 3.3V and a rated load current of 6A. The RT resistor of 33.2kΩ sets the switching frequency at 400kHz.
In this example, the target half-load and full-load efficiencies are 94.5% and 91.5%, respectively, based on a nominal input voltage of 12V that ranges from 4V to 36V. The switching frequency is set at 400kHz. The BIAS input is connected to the 3.3V output, thus reducing IC bias power dissipation and improving efficiency performance.