HOLYBRO PM08-CAN Power Module 200A (14S)

HOLYBRO DroneCAN Power Module 200A – High-Current Power Monitoring for Professional UAV Systems

The HOLYBRO DroneCAN Power Module 200A is designed for high-performance UAVs and other unmanned systems with demanding power requirements. It supports batteries from 2S to 14S and is rated for a continuous current of up to 200 A. Significantly higher current peaks can be handled for short periods.

Unlike conventional analog power modules, communication with the flight controller is handled via the robust DroneCAN protocol. Battery voltage, current and temperature data can be transmitted digitally to a compatible flight controller. A powerful STM32F405RG microcontroller handles measurement processing and communication.

For reliable system integration, the power module provides two independent 5.3 V power outputs rated at up to 3 A each. Both outputs use separate BEC circuits. The sensor and BEC boards are physically separated to reduce electrical interference affecting the measurement circuitry.

DroneCAN Communication

Measurement data is transmitted digitally via DroneCAN. The CAN-based communication system is particularly suitable for professional UAV and robotics platforms where robust digital communication between individual system components is required.

• Digital communication via DroneCAN
• Transmission of voltage, current and temperature data
• Software-controlled CAN termination
• Firmware updates supported
• Calibration supported

For 2S to 14S Batteries

The power module supports an input voltage range of 7 to 60.9 V, corresponding to battery configurations from 2S to 14S. This makes it particularly suitable for larger UAV platforms and high-performance propulsion systems operating at higher voltages.

Up to 200 A Continuous Current

The HOLYBRO DroneCAN Power Module is rated for a continuous current of 200 A. For short-duration load peaks at an ambient temperature of 25 °C, it supports up to 400 A for one second and up to 1000 A for less than one second.

• Continuous Current: 200 A
• Peak Current: 400 A at 25 °C for 1 second
• Short-Duration Peak Current: 1000 A at 25 °C for less than 1 second
• Maximum Current Measurement Range: 376 A

Galvanically Isolated Current Measurement

A galvanically isolated current sensor is used for current measurement. The sensor IC is qualified according to AEC-Q100 Grade 1 and is designed for reliable operation under demanding electrical and thermal conditions.

Galvanic isolation and the separate sensor and BEC board design help reduce electrical interference affecting the measurement circuitry.

Precise Voltage, Current and Temperature Measurement

In addition to battery voltage and current measurement, the power module features a high-precision temperature sensor. This allows the thermal load of the module to be monitored as part of the UAV power system.

• Voltage Accuracy: ±0.1 V
• Current Accuracy: ±5%
• Temperature Accuracy: ±1 °C

Two Independent 5.3 V Power Outputs

The power module provides two separate 5.3 V outputs, each capable of supplying up to 3 A. Both power outputs use their own BEC IC and independent circuitry.

• Output 1: 5.3 V / 3 A
• Output 2: 5.3 V / 3 A
• Independent BEC IC for each output
• Separate BEC circuits

Separate Sensor and BEC Boards

The sensor circuitry and power regulation system are located on separate circuit boards. This design reduces the transfer of electrical interference from the voltage regulators to the sensitive measurement circuitry and supports reliable acquisition of power data.

Efficient Aluminum Enclosure

The power module features an aluminum enclosure for heat dissipation. Heat generated under high-current loads can therefore be efficiently transferred to the surrounding environment. At the same time, the enclosure provides mechanical protection for the integrated electronics.

STM32F405RG Processor

Internal data processing and DroneCAN communication are handled by a powerful STM32F405RG microcontroller operating at a clock frequency of 168 MHz.

• Processor: STM32F405RG
• Clock Frequency: 168 MHz
• Flash Memory: 1024 KB
• RAM: 196 KB

Software-Controlled CAN Termination

The CAN termination resistor can be enabled or disabled via software. This allows the power module to be configured according to its position within the DroneCAN network without requiring hardware modifications.

Connections

A Molex CLIK-Mate 6-pin connector with a 2.00 mm pitch is provided for power and DroneCAN connectivity. Different connection variants are available for the main battery power path.

• Power & CAN: Molex CLIK-Mate 2.00 mm, 6-pin
• Battery IN/OUT: XT90 connectors
• Battery IN/OUT: tinned wire ends
• Battery IN/OUT: XT90 and ring terminals
• Wire Gauge: 8 AWG, highly flexible silicone-insulated wire

Status LED

An integrated status LED provides information about the current operating and communication status of the power module.

• Fast continuous flashing: MCU is in bootloader mode and waiting for firmware
• Fast flashing for 3 seconds followed by 1 second continuously on: waiting for CAN connection
• Slow flashing at one-second intervals: CAN connection successfully established

Features

• Supports 2S to 14S batteries
• 200 A continuous current capability
• 400 A peak current for 1 second at 25 °C
• Up to 1000 A for less than 1 second at 25 °C
• Maximum current measurement range up to 376 A
• Digital DroneCAN communication
• STM32F405RG microcontroller
• Two independent 5.3 V / 3 A power outputs
• Separate BEC circuits
• Separate sensor and BEC boards
• Galvanically isolated current sensor
• AEC-Q100 Grade 1 qualified current sensor IC
• Integrated temperature monitoring
• Aluminum enclosure for efficient heat dissipation
• Software-controlled CAN termination
• Firmware updates supported
• Calibration supported
• Compact design

Technical Specifications

• Processor: STM32F405RG
• Clock Frequency: 168 MHz
• Flash Memory: 1024 KB
• RAM: 196 KB
• Input Voltage: 7–60.9 V / 2S–14S
• Continuous Current: 200 A
• Peak Current: 400 A @ 25 °C for 1 second
• Maximum Short-Duration Current: 1000 A @ 25 °C for less than 1 second
• Maximum Current Measurement Range: 376 A
• Voltage Accuracy: ±0.1 V
• Current Accuracy: ±5%
• Temperature Accuracy: ±1 °C
• Output 1: 5.3 V / 3 A
• Output 2: 5.3 V / 3 A
• Communication Protocol: DroneCAN
• Wire Gauge: 8 AWG
• Operating Temperature: -25 °C to +85 °C
• CAN Termination: software-controlled
• Firmware Update: supported
• Calibration: supported

Dimensions and Weight

• Dimensions: 45 × 41 × 26 mm, excluding cables
• Weight: 185 g including cables

For High-Performance UAVs and Professional Unmanned Systems

The HOLYBRO DroneCAN Power Module 200A is designed for systems requiring high current capability, digital power monitoring and robust communication. With support for up to 14S batteries, 200 A continuous current and DroneCAN connectivity, the module is particularly suitable for large multicopters, VTOL platforms, UGVs and other high-performance unmanned systems.

The combination of galvanically isolated current measurement, temperature monitoring, two independent BEC outputs and software-controlled CAN termination enables flexible integration into demanding system architectures.