MATEKSYS PM12S-3 Power Module

Bullet Points:

● Wide 9V to 55V Operating Input Range with TVS protection

● 3x independent Step-Down Voltage Regulators

● BEC Vx,  5.2V / 6V / 8V output options.  supports typical continuous output current of up to 15A, Peak current of up to 25A

● BEC 5V (Fixed), 4A continuous

● BEC 12V (Fixed), 4A continuous

● 1K:20K voltage divider built-in (Volt = 1/21 Input voltage)

● Current sensor signal passthrough pad

● Size & Weight: 61x40x15mm, 53g

BEC Vx

● Output voltage 5.25V / 6V / 8V options.

● Output voltage tolerance 1.5%

● Synchronous switching step-down (or buck) regulator with typical efficiencies of 90% to 96%

● Supports typical continuous output current of up to 15A,  Peak current of up to 25A.

● Output ripple  32mV (VIN=50V,  Output 5.25V @ 15A),  43mV (VIN=50V,  Output @ 5A)

● Standby current: 10~20mA

● Reverse Input voltage protection: No

● Thermal Shutdown

● Output Short-circuit tolerant (2 seconds)

● Overcurrent protection & self-recovery

● Tip: Input voltage >= 15V is required for continuous output current of 15A

BEC 5V

● Output voltage 5.2V, tolerance 1.5%

● Supports continuous output current of up to 4A,  Peak current of 6A

● Output ripple  20mV (VIN=24V,  Output @ 5A),  50mV (VIN=50V,  Output @ 5A)

● Reverse Input voltage protection: No

● Thermal Shutdown

● Output Short-circuit tolerant (2 seconds)

● Overcurrent protection & self-recovery

BEC 12V

● Output voltage 12V, tolerance 1.5%

● Supports continuous output current of up to 4A,  Peak current of 6A

● Output ripple  18mV (VIN=24V,  Output @ 5A),  32mV (VIN=50V,  Output @ 5A)

● Reverse Input voltage protection: No

● Thermal Shutdown

● Output Short-circuit tolerant (2 seconds)

● Overcurrent protection & self-recovery

● Tip: Input voltage >= 13V is required for stable 12V output

BEC Vx Testing

MATEKSYS PM12S-3 Power Module Guide

The MATEKSYS PM12S-3 is a high-voltage power module designed for large FPV drones, heavy-lift platforms, and other 3–12S power systems. It combines three independent step-down regulators with multiple BEC outputs and built-in voltage sensing, making it useful when a high-voltage battery system needs several regulated power outputs.

Why Choose the PM12S-3?

The main advantage of the PM12S-3 is its three independent regulated power outputs. It accepts a wide 9–55V input and provides separate 5V, 12V, and adjustable Vx outputs, allowing different onboard electronics to be powered from the same module.

Who Is It For?

• Large FPV drones: Suitable for 3–12S platforms that need regulated power for multiple electronics.

• Heavy-lift and cinematic builds: Useful when high-voltage batteries and several onboard devices require separate power rails.

• Long-range or professional platforms: The wide 9–55V input range supports higher-voltage battery systems without requiring a separate low-voltage power module.

What Should You Check Before Installation?

First, check the voltage requirements of every device you plan to power. The Vx output can be set to 5.25V, 6V, or 8V, while the module also provides dedicated 5V and 12V outputs. Make sure each connected device is compatible with the selected output voltage.

The PM12S-3 also includes a built-in 1K:20K voltage divider for battery voltage monitoring and a current-sensor signal passthrough pad, allowing battery information to be integrated into compatible flight-controller systems.

Bottom line: Choose the MATEKSYS PM12S-3 when your build uses a 3–12S high-voltage battery and needs multiple regulated power outputs. Its combination of adjustable Vx, dedicated 5V and 12V BECs, and battery voltage monitoring makes it especially useful for large and electronics-heavy FPV platforms.

Size

Includes

● 1x Matek PM12S-3 Power Module

● 1x Low ESR capacitor ZLJ 63v 390uf

● Tips: If the input voltage is noisy, capacitor is required to be soldered to the input pads