Adjustable BUCK circuit based on TPS54360

TPS54360 is a 60V, 3.5A buck regulator with integrated high-side MOSFET. Its internal mos RDS(on) is 92mΩ, 146μA quiescent operating current, 2μA shutdown current, fixed switching frequency from 100kHz to 2.5MHz, This is very good. The higher the frequency, the smaller the ripple of the output voltage will be. The frequency can be set through a resistor.
The reference voltage of the internal error amplifier is 0.8V, so the minimum output voltage is 0.8V. Of course, TPS54360 leads to the COMP pin. , this way you can abandon the internal error amplifier, use an external amplifier, and use DAC control, so that the output can be adjusted from 0V, but it will be more troublesome to use a microcontroller. You can try it later.
![BUCK1.png] The schematic diagram is basically drawn according to the data sheet. Theoretically, VOmax = 16.5V VOmin = 0.8V.
Let’s take a look at the test first:
This is when it is adjusted to the maximum
! [BUCK3.jpg]


Adjusted to the minimum Time
![BUCK4.jpg]