Buck Converters

Step-down DC-DC buck converters that reduce a higher DC voltage to a lower, adjustable output: XL4005 and XL4015 5A modules, the XL4016 300W/9A board and a 600W 12-75V unit. Several models offer constant-current (CC) and constant-voltage (CV) adjustment for Li-ion charging and LED drivers, and some include a built-in volt and amp display. Keep the input a couple of volts above the output you set.