PMU 2 Lite
PMU 2 Lite is a high-precision power management module designed for unmanned systems. Its core advantages lie in wide voltage adaptation, high-precision monitoring, and a convenient plug-and-play experience, which can meet the power supply and data monitoring needs of various types of flight controllers.
Features
- High-Precision Measurement: Voltage accuracy up to ±0.05V and current accuracy up to ±0.1A, enabling real-time capture of power status.
- Wide Voltage & High Current Support: Supports 20~70V input voltage, with an instantaneous current of up to 220A (for 120 seconds) and a continuous current of 130A (in a well-cooled environment).
- Temperature Drift Error Resolution: Adopts the ITT3 Temperature Impedance Tracking Algorithm to offset measurement errors caused by temperature changes.
- Hardware-Software Synergy: Built-in STM32H5 processor runs self-developed M4C architecture software, achieving optimized performance and stability.
- Factory Pre-Calibration: No manual calibration required for users; it is ready to use out of the box, ensuring consistency and accuracy.
- CAN Bus Communication Support: Compatible with CAN bus protocol for reliable data transmission.
- Excellent Heat Dissipation: Features an aviation-grade aluminum alloy housing and thermal silica gel for efficient heat dissipation.
- Reliable Connection: Equipped with 7AWG cables and QS8 connectors to increase current-carrying wire diameter and significantly reduce heat generation under load.
Hardware Specifications
| Parameter Name | Specifications |
|---|---|
| Processor | STM32H5 Arm® Cortex®-M33, 250 MHz |
| Input Voltage | 5V version: 12V ~ 70V 15V version: 20V ~ 70V |
| Instantaneous Current | 220A@120Sec |
| Continuous Current | 130A (in a well-cooled environment) |
| Detection Current Range | 0A ~ 220A |
| Voltage Accuracy | ±0.05V |
| Current Accuracy | ±0.1A |
| Voltage Output | 15V version: 15V 6A 5V version: 5.2V 7A |
| Communication Protocol | CAN |
| Calibration Setting | Factory pre-calibrated, no user calibration required |
| Operating Firmware | CUAV M4C PMU2 |
| Power Interface | 7AWG / QS8 |
| Data Interface | 15V version: MOLEX 5055670871 5V version: MOLEX 5025850670 |
| Dimensions | 57.25 × 32.25 × 17.5 mm (excluding cables) |
| Weight | 222g (including cables) |
| Operating Temperature | -20℃ ~ +80℃ |
Size
Purchase
Hardware Connection
15V Version Connected to X25 EVO
X25 EVO has PMU 2 Lite settings enabled by default. No parameter configuration is required. it supports plug-and-play.
5V Version Connected to Pixhawk V6X/X7 Series Controllers
Pixhawk V6X/X7 series controllers have PMU 2 Lite settings enabled by default. No parameter configuration is required. It supports plug-and-play.
Connection to Other Controllers
Connect CAN_H and CAN_L of the CAN bus to the CAN interface. Insert the red and black power cables into the VCC/GND pins of the Power port respectively. The power module can be configured graphically via the LGC ground station.
Pinouts
View Power Information
[!NOTE] For manual configuration and PMU 2 Lite parameter settings, refer to the configuration guides: ArduPilot / PX4