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PMU 2 Lite is a power management unit module for unmanned system devices. It features built-in STM32H5 processor, runs self-developed M4C architecture software, and uses ITT3 temperature impedance tracking algorithm. It can accurately measure the voltage and current of unmanned systems in real time and supports 20V ~ 70V voltage and 220A current. It communicates via CAN bus. Each module has been factory pre-calibrated to ensure good consistency and accuracy
PMU 2 Lite Feature:
220A Current Detection Overcurrent Warning Protection
16S Battery Input Wide Voltage, Flexible Adaptation.
High-Performance Processor Runs M4C Architecture Software.
CAN Bus Communication Multi-Platform Compatibility.
15V/5V Output Extensive Controller Compatibility.
Aluminum Alloy Shell Excellent Heat Dissipation.
Factory Pre-Calibrated Ready-to-Use.
Basic Parameters：
Processor：STM32H7 Arm® Cortex®-M7 480 MHz
Version：x25Evo
Gyro&Acce：IIM-42653×2 / Gyro Sensing Range:±4000°/s / Accel Sensing Range: ±32g / IIM-42652 / Gyro Sensing Range:±2000°/s / Accel Sensing Range: ±16g
Compass：RM3100
Barometer：TDK IPC20100/Bosch BMP581
PortType：
PWM OUT：16
Power IN (CAN)：2(5055670871-5055650801)
GPS Ports：2
TELEM Ports：2
UART4 Ports：1
RC IN：1(PPM/SBUS/DSM,etc.)
DEBUG Ports (DSU)：1
Ethernet (ETH)：1
CAN Bus：CAN1x3 / CAN2x2
SPI6 Expansion：1
ADC 3V3：1
ADC 6V6：1
USB Ports：1(Type-C)
I2C Ports：3
RSSI Ports：1
Power Module：PMU 2 Lite
Electrical and Mechanical Data：
Input Voltage：USB:4.75v~5.25v / PMU 2Lite: 20V ~ 70V / Power: 10V-18V
Operating Temperature：-20C ~ +85C
Size：76.5× 45.45 ×32.2mm
Weight：110g
PMU 2 Package Accessories
PMU 2 Lite-15V[ X25 Version ]
PMU 2 Lite 15V Power Module：×1
PMU 2 Lite-15V Controller Power Cable (Length: 30cm)：×1
PMU 2 Lite-5V[ V5+ Version ]
PMU 2 Lite 5V Power Module：×1
PMU 2 Lite-5V Controller Power Cable V5+ Version (Length: 25cm)：×1
PMU 2 Lite-5V[ X7+ Version ]
PMU 2 Lite 5V Power Module：×1
PMU 2 Lite-5V Controller Power Cable X7+ Version (Length: 25cm)：×1
PMU 2 Lite supports 20V to 70V wide voltage input and is compatible with 16S batteries. It adapts to various power supply conditions and can easily meet the power needs of various unmanned systems in different scenarios, significantly improving its adaptability.
PMU 2 Lite employs a new STM32H5 ARM Cortex-M33 CPU with a frequency of 250MHz as the processor and the self-developed M4C architecture software. It adopts the ITT3 temperature impedance tracking algorithm, enabling excellent measurement consistency in a wide temperature range and across the full measurement range. With an accuracy of ±0.05V / ±0.1A, it ensures the stability and reliability of data in complex environments.
PMU 2 Lite employs the standard CAN bus communication protocol and is compatible with mainstream open-source platforms such as ArduPilot and PX4. It supports various unmanned system devices, with a wide range of application scenarios.
PMU 2 Lite offers optional 15V or 5V output voltages, which are widely compatible with multiple controllers. It can meet various demands for the power supply of devices and enable effective and convenient operation of device systems.
PMU 2 Lite is equipped with an aluminum alloy shell and features heat-conducting protrusions and thermal conductive silicone designed for heat-generating components like the power supply and inductor. This effectively improves heat dissipation efficiency and reduces internal temperatures during operation. PMU 2 Lite also employs AWG8 and QS8 connectors, allowing for larger wire diameters and significantly reducing heating generation under heavy loads.
Each module is factory pre-calibrated and temperature-learned. The factory uses calibration architecture hardware to conduct load tests, temperature learning, and pre-calibration across the full current and voltage ranges, ensuring that each module maintains excellent accuracy and stability under various working conditions. It is ready for immediate use without additional calibration.
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