MP1584EN DC-DC Buck Converter Module (5V / 12V)

A thumbnail-size step-down (buck) regulator built on the MP1584EN chip, for running low-voltage electronics from a drone, rover or robot battery: microcontrollers such as Arduino, sensors, LED strips and other light loads. Choose the 5V or 12V version; each arrives set to its output and keeps an onboard trim potentiometer for adjustment.

Key features

• 4.5–28 V input: the 5V version runs from 2S to 6S LiPo, while the 12V version needs a 4S or higher supply to stay in regulation
• Up to 3 A peak and about 2 A sustained output; add heatsinking or airflow for loads near 3 A
• 1.5 MHz switching and up to 92% efficiency keep heat and board size down
• Over-temperature, over-current and short-circuit protection
• Output adjustable from 0.8 V to 20 V with the onboard potentiometer

Specifications

• Regulator chip: MP1584EN
• Input voltage: 4.5–28 V DC
• Output voltage: 5 V or 12 V preset, adjustable 0.8–20 V
• Output current: 3 A peak, 2 A continuous
• Switching frequency: 1.5 MHz
• Efficiency: up to 92%
• Dimensions: approx. 22 × 17 × 4 mm
• Weight: approx. 3 g

Check the output with a multimeter before connecting your load, especially after touching the trim pot. On 6S the 25.2 V full-charge voltage sits close to the 28 V input limit, so feed the module from a point protected by a low-ESR capacitor rather than straight off noisy ESC leads.