The buck converter input voltage is DC 9V-36V, and the output voltage is 5.2V (5V- 5.3V available according to your input voltage). Different input voltages produce different output power: input DC 9-24V, output 5.2V /6A/30W; input DC 24-32V, output 5.2V /5A/25W; input DC 32-36V, output 5.2V / 3.5A /18W. The voltage reducer features a USB interface and a quick charge identifying chip, and is compatible with Android and Apple devices. The step down regulator adopts a synchronous rectification scheme to provide a wide voltage range, large current and high efficiency. 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V- 5.3V 5.2V 3.5 -6A Volt Transformer Power Supply Module for Phone Fast Charging