Pomegranate Systems Power Module

Digital Power Module with high resolution current integration, 5V/2A supply with power monitoring, single UAVCAN v0 CANbus interface, and an RGB status LED.

Detailed setup, configuration, and troubleshooting information can be found on the manufacturer's device home page.

Specifications

• Input Voltage: 6-26V (2-6S)
• Max Continuous Current:
  • Benchtop: 40A
  • Forced Cooling: 100A
• Max 5V Output Current: 2A
• Voltage Resolution: 0.04 ΔV
• Current Resolution:
  • Primary / Battery Bus: 0.02 ΔA
  • 5V bus: 0.001 ΔA
• CANbus Termination: Electronic (on by default)
• MCU: STM32 F302K8U
• Firmware: Open Source
• Electrical Interface:
  • Power: Solder pads or XT60PW (right angle, board-mounted connectors)
  • CANbus Dual JST GH-4 (standard UAVCAN micro-connector)
  • I2C / Serial: JST GH-5
  • 5V Output: Solder pads or CANbus / I2C connectors
• Device Mass:
  • Without Connectors: 9g
  • With XT60PW Connectors: 16g

Configuration

1. Enable UAVCAN by setting the UAVCAN_ENABLE parameter to 2 (Sensors Automatic Config) or 3.
2. Set the following module parameters using the Mavlink console:
   • Battery capacity in mAh: battery_capacity_mAh
   • Battery voltage when full: battery_full_V,
   • Battery voltage when empty: battery_empty_V
   • Turn on current integration: enable_current_track
   • (optional) Turn Off CANbus termination resistor :enable_can_term

Example: A Power Module with UAVCAN node id 125 connected to a 3S LiPo with capacity of 5000mAh can be configured with the following commands:

uavcan param set 125 battery_capacity_mAh 5000
uavcan param set 125 battery_full_V 12.5
uavcan param set 125 battery_empty_V 11.2
uavcan param set 125 enable_current_track 1
uavcan param save 125

See device configuration page for a full list of parameters.