Dual-USB DC-DC 3A Step-Down Converter

This is a mini DC-DC step-down power module based on MP1584 and its output fixed 5V with two USB 2.0 type A ports. It is a small size, lightweight, especially suitable for model airplanes, smart cars, Arduino DIY and other items.

Open Hardware Code HW-681.

Specifications

• IC: XL1583
• Input Power: 6-28V (36V Peak, 18V Recommended)
• Output: 5.5V Max
• Frequency: Up to 1.5MHz
• Output Current: 1.8A Continuous, 2A Max, 1A Recommended
• Output Ripple: 4.7V-5.5V @ 500mA
• Mount Spacing: 14 x 28.5mm

Note: The output current is combined, not per-port. Implementation recommendation includes input and output filter capacitors

Gough Lui's excellent review: https://goughlui.com/2025/10/03/tested-ce8301-boost-xl2001-hw-676-xl1583-hw-681-clone-buck-5v-usb-power-modules/