Power Control Assembly (PCA)

Invocon’s Power Control Assembly (PCA) provides complete power control for small launch vehicles in a robust miniature package. The PCA manages two 28V power sources across four configurable power output channels, seamlessly switching between an external power control system and an onboard battery while supporting battery charging to simplify pre-launch vehicle maintenance. The PCA is designed to accommodate both Invocon’s Smart Rechargeable Battery and standard rechargeable batteries.

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Key Specifications

Input Voltage

22.5 – 33.6 VDC

Output Current (28V channels combined)

12 A

Output Current (5V / 12V auxiliary)

2.0 A

Power Outputs

2x switched 28V, 1x un-switched 28V, 1x auxiliary 5V or 12V

Connectors

D-Sub (Battery, UMBI/Lanyard, Telemetry, Unswitched/Aux, Switched/Status)

Size (L x W x H)

4.85" x 4.4" x 1.4" (excluding connectors)

Weight

1.5 lbs

Case Material

6061 aluminum, Alodine coated

Operating Temperature

-24 to 71°C

Key Features

Dropout-Free Internal/External Power Switching
Designed specifically to prevent power dropouts when transitioning between internal battery and external ground power, protecting sensitive avionics loads.
Configurable Auxiliary Output
5V or 12V auxiliary output configurable for source (switched or un-switched 28V channel) and voltage level to match payload requirements.
Over-Voltage Protection
One switched 28V output includes configurable over-voltage protection for protection of sensitive downstream loads.
Standard Sequencing Semantics
Supports All Fire, No Fire, Power Backup 1, and Power Backup 2 sequencing for compatibility with standard small launch vehicle avionics architectures.
Battery Charging Support
Integrated battery charging support simplifies pre-launch vehicle maintenance by enabling battery top-off without removing the assembly.
UMBI/Lanyard Interface
UMBI and lanyard connections support standard ground handling and launch sequencing operations.

Typical Applications

Small Launch Vehicle Avionics Power
Provides centralized power switching and distribution for all onboard avionics during ground operations and flight.
Pre-Launch Battery Maintenance
Manages battery charging and health monitoring to ensure sufficient mission power prior to launch.
Internal/External Power Transition
Handles the critical umbilical-pull transition from external ground power to internal battery power without interruption.
Payload Power Distribution
Supplies regulated 5V or 12V auxiliary power to payload electronics requiring lower voltage rails.

Available Configurations

Standard PCA

Dual 28V inputs, two switched 28V outputs, one un-switched 28V output, one 5V/12V auxiliary output. Compatible with Invocon Smart Battery and standard rechargeable batteries.

Custom Configuration

Invocon can adjust auxiliary output voltage levels, connector assignments, and over-voltage protection thresholds to suit specific vehicle integration requirements.

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