Dual 2A/3A synchronous buck regulator in 24-VQFN
The TPS65270RGER is a dual-channel synchronous buck regulator from Texas Instruments, delivering 2A on one output and 3A on the other from an input range of 4.5V to 18V. Its adjustable output spans 0.8V to 15V, making it suitable for powering processor cores, I/O rails, and intermediate bus voltages in a compact 24-VQFN (4x4 mm) package.
Switching frequency and external component sizing
A lower frequency reduces switching losses but requires larger inductors and output capacitors; a higher frequency shrinks the magnetics but increases switching losses and tightens the layout to manage switching noise. The synchronous rectifier helps maintain efficiency across load ranges.