graph LR
subgraph "半橋電機驅動電路"
A[24V直流輸入] --> B[π型濾波器]
B --> C[預驅動IC]
C --> D[柵極驅動器]
subgraph "半橋MOSFET對"
Q_HIGH["VBQF3310G \n 上管"]
Q_LOW["VBQF3310G \n 下管"]
end
D --> E[高側驅動]
D --> F[低側驅動]
E --> Q_HIGH
F --> Q_LOW
Q_HIGH --> G[電機輸出節點]
Q_LOW --> H[功率地]
I[12V自舉電源] --> E
G --> J[BLDC電機]
K[電流採樣] --> L[保護電路]
L --> M[故障信號]
M --> C
end
subgraph "散熱設計"
N["150mm²敷銅區"] --> Q_HIGH
O["散熱過孔陣列"] --> N
P[內部接地層] --> O
end
style Q_HIGH fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q_LOW fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
輔助電源管理拓撲詳圖
graph TB
subgraph "多通道負載開關"
A[MCU GPIO] --> B[電平轉換]
B --> C["VBC1307柵極"]
subgraph "負載開關陣列"
Q_CH1["VBC1307 \n 通道1"]
Q_CH2["VBC1307 \n 通道2"]
Q_CH3["VBC1307 \n 通道3"]
end
C --> Q_CH1
C --> Q_CH2
C --> Q_CH3
VCC_12V[12V輔助電源] --> Q_CH1
VCC_12V --> Q_CH2
VCC_12V --> Q_CH3
Q_CH1 --> D[CPU核心電源]
Q_CH2 --> E[USB模組]
Q_CH3 --> F[感測器陣列]
G[10-47Ω柵極電阻] --> C
end
subgraph "熱管理與佈局"
H["80mm²敷銅區"] --> Q_CH1
I[退耦電容] -->|靠近MOSFET| Q_CH1
J[PCB分區] --> K[功率地]
J --> L[數字地]
K --> M[單點連接]
L --> M
end
style Q_CH1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
LED背光驅動拓撲詳圖
graph LR
subgraph "分區背光控制"
A[背光驅動IC] --> B[PWM輸出1]
A --> C[PWM輸出2]
A --> D[PWM輸出3]
B --> E["VB3222A柵極1"]
C --> F["VB3222A柵極2"]
D --> G["VB3222A柵極3"]
subgraph "雙N溝道MOSFET"
Q_PAIR1["VB3222A \n 雙N溝道1"]
Q_PAIR2["VB3222A \n 雙N溝道2"]
Q_PAIR3["VB3222A \n 雙N溝道3"]
end
E --> Q_PAIR1
F --> Q_PAIR2
G --> Q_PAIR3
H[5V-12V背光電源] --> Q_PAIR1
H --> Q_PAIR2
H --> Q_PAIR3
Q_PAIR1 --> I[LED串1]
Q_PAIR2 --> J[LED串2]
Q_PAIR3 --> K[LED串3]
I --> L[電流檢測]
J --> M[電流檢測]
K --> N[電流檢測]
L --> O[回饋回路]
M --> O
N --> O
O --> A
end
subgraph "佈局優化"
P[SOT23-6封裝] --> Q_PAIR1
Q[50mm²敷銅區] --> Q_PAIR1
R[柵極驅動緩衝] --> E
end
style Q_PAIR1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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