Texas Instruments DRV8434S Stepper Motor Driver on Pololu carrier board.

Pololu D24V22F5 is a compact 5 V fixed-output step-down voltage regulator module with a 5.3–36 V input range and up to 2.5 A typical output current. Keywords: D24V22F5, 5V buck regulator, 2.5A step-down module, 36V input regulator, Pololu power module Pololu

D36V50F5 is a Pololu non-isolated step-down DC-DC regulator module that converts a 5.5–50 V input to a fixed 5 V output at up to 5.5 A. Keywords: D36V50F5, 5V buck converter, 5.5A DC-DC module, 50V input regulator, Pololu power module