CUAV CAN PMU Power Module — Precise Power Management for Drones

Name: CUAV CAN PMU Power Module. Brand: China. Category: Drones & Quadcopters > Stacks (FC+ESC). Also categorized under Components: Drones & Quadcopters > Drone Components > Drone Spare Parts.

Brief Description
The CAN PMU is a high-precision power management unit designed for multicopters and other unmanned platforms. The device is based on an STM32F412 processor (100 MHz) and operates using the CUAV ITT algorithm, which provides temperature impedance compensation and stable real-time voltage and current estimation. The CAN PMU powers the flight controller and peripherals via a CAN bus with UAVCAN protocol support for digital communication.

Features and Benefits

• High measurement accuracy thanks to the ITT algorithm. The Impedance Temperature Tracking algorithm compensates for errors caused by resistance changes at different temperatures, ensuring stable readings across a wide range of operating conditions.
• UAVCAN digital communication. All information is transmitted digitally over the CAN bus, minimizing interference inherent in analog conversions and increasing telemetry reliability.
• Accurate power consumption estimates. Internal data processing at over 100 Hz and real-time consumption statistics provide the flight controller with reliable information for safe flight control.
• Low EMI and efficient LT8645S stabilizer. The built-in stabilizer provides 5.4V/5A output, features ultra-low electromagnetic interference, and conversion efficiency up to 95%.
• Reliable heat dissipation. According to thermal imaging tests at room temperature, after three hours of operation at 90A (24V), the case temperature does not exceed 78°C, guaranteeing stability and durability even under high loads.

Technical Specifications

• Processor: STM32F412, 100 MHz, 512K Flash Army, 256K RAM.
• Input Voltage: 6-62V (2-15S).
• Maximum Current: 110A.
• Voltage Measurement Accuracy: ±0.05V.
• Current Measurement Accuracy: ±0.1A.
• Resolution: 0.01A/V.
• Maximum Output Power: 6000W (for 90 seconds).
• Stable Output Power: 5000W.
• Power Output: 5.4V/5A (maximum instantaneous up to 8A for 120 seconds).
• Protocol: UAVCAN (CAN bus).
• Operating Temperature: -20°C to +100°C.
• Firmware Update Capability: Supported.
• Interface: IN/OUT XT90 (cable) / Amass 8.0 (module).
• Dimensions: 46.5mm × 38.5mm × 22.5mm.
• Weight: 76 g.

Each CAN PMU unit undergoes factory calibration to ensure high accuracy and reliable in-flight performance. Thanks to digital data transmission via UAVCAN and internal processing at over 100 Hz, the operator receives timely and detailed information about the power sources' status, enhancing platform safety and controllability.

The CAN PMU is optimal for professional and semi-professional systems where correct telemetry of voltage, current, and power consumption is critical. The device demonstrates high conversion efficiency of up to 95% thanks to the LT8645S stabilizer, has low EMI, and proven case durability under high inrush currents and prolonged operation.

Other details: the built-in stabilizer on the LT8645S chip ensures low EMI and up to 95% efficiency, and the real durability of the case under high loads is confirmed by tests. The CAN PMU is suitable for complex configurations with high inrush currents and strict thermal requirements.

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