ITEM NAME:2 in 1 5A DC-DC Adjustable Power Step-down Buck Module CC/CV Charge Board #gib Store Home Promotion Hot Item Add to Fav.High power, high efficiency, 5A, low ripple;. With current limiting function, even if the output short circuit will not burn the module. With heat sink, copper holders are presented! (1) As a general step-down module with overcurrent protection;.