- PD Profile Support and System Sizing
- 15W Profile: Small systems (4-8 basic modules)
- 27W Profile: Medium systems (8-16 standard modules)
- 45W Profile: Large systems (20-32 mixed modules)
- 60W Profile: Professional systems (32-48 modules)
- 100W Profile: Maximum USB-C systems (48-64 modules)
- Voltage Negotiation Protocol Implementation
- PD Contract Negotiation State Machine
- Dynamic Power Renegotiation (Load-based adjustment)
- Fallback Power Profiles (Graceful degradation)
- Power Source Change Detection and Handling
- Current Limiting and Protection Circuits
- PPTC Fuse Selection and Coordination
- Electronic Fusing and Monitoring
- Inrush Current Limiting for Large Systems
- Short Circuit Protection and Isolation
- PD Communication Controller Requirements
- PD PHY and Protocol Stack Implementation
- CC Pin Monitoring and Configuration
- USB-C Orientation Detection and Handling
- Power Role Negotiation (Source/Sink/DRP)
Schematic Required: USB-C PD controller circuit with protection
Pseudocode Required: PD negotiation state machine and error handling
Table Required: PD profile compatibility matrix and voltage/current limits
- Multi-Rail DC-DC Converter Specifications
- Primary 24V Rail (Main distribution, motor power)
- Secondary 12V Rail (LED drivers, displays, moderate power)
- Auxiliary 5V Rail (Logic, sensors, low power modules)
- 3.3V Logic Rail (MCU power, digital logic)
- Negative Rail Generation (-12V for audio applications)
- Load Balancing and Current Sharing Circuits
- Active ORing Controllers for Multiple Sources
- Current Sharing for Parallel Power Supplies
- Load Distribution Across Multiple Base Plates
- Hot-Swap Power Module Integration
- Per-Module Current Monitoring and Protection
- High-Side Current Sensing (Hall effect, shunt resistor)
- Real-Time Power Monitoring and Analytics
- Individual Module Protection and Isolation
- Power Quality Monitoring (Voltage ripple, noise)
- Realistic System Power Budget Management and Scaling Models
- Total System Power Calculations by Scale
- Small Systems (2×2 to 4×4): 15-30W typical, 50W peak
- Medium Systems (6×6 to 8×8): 50-100W typical, 150W peak
- Large Systems (8×12 to 12×12): 150-300W typical, 500W peak
- Enterprise Systems (Multiple grids): 300W+ with distributed power
- USB-C PD Limitations and External Power Requirements
- USB-C Maximum: 100W (Suitable up to ~64 standard modules)
- External PSU Threshold: >100W systems require DC supply
- Hybrid Power: USB-C + external for redundancy
- Power Source Priority and Switching Logic
- Power Diversity Factor Implementation (Statistical load modeling)
- Module Type Power Classifications
- Low-Power: ≤1W (Buttons, LEDs, simple controls) - 70% typical
- Standard: 1-3W (Encoders, small displays) - 25% typical
- High-Power: 3-8W (Large displays, motors) - 5% typical
- Power-Hungry: 8-15W (Touchscreens, high-power actuators) - <1% typical
- Statistical Usage Models and Diversity Factors
- Office Use: 40% average utilization, 0.6 diversity factor
- Studio Use: 60% average utilization, 0.7 diversity factor
- Live Performance: 80% average utilization, 0.8 diversity factor
- Stress Testing: 100% utilization, 1.0 diversity factor
- Dynamic Load Monitoring and Prediction
- Power Budget Rebalancing Algorithms
- Dynamic Load Shedding and Priority Management
- Critical Function Priority (Transport controls, emergency stops)
- Normal Function Priority (Standard controls, displays)
- Aesthetic Function Priority (LED rings, backlighting)
- Non-Essential Priority (Decorative elements, extras)
- Progressive Load Shedding Algorithm Implementation
Diagram Required: Power distribution tree with monitoring points and realistic load scenarios
Pseudocode Required: Power budget allocation and rebalancing algorithms with diversity factors
Table Required: Realistic power consumption matrix by module type, usage patterns, and system scale
- Radio Power Domain Isolation and Control
- Sleep Mode and Wake-up Power Management
- Antenna Power and RF Safety Compliance
- Power Consumption Budgeting per Radio Type
Schematic Required: Radio power management and isolation circuits