graph LR
subgraph "高效率降壓轉換器"
A["24V/48V輸入"] --> B["輸入濾波電容"]
B --> C["TVS保護"]
C --> D["VBGQF1302 \n 主開關管"]
D --> E["功率電感"]
E --> F["輸出濾波電容"]
F --> G["核心電壓輸出 \n (3.3V/5V/12V)"]
H["數字PWM控制器"] --> I["柵極驅動器"]
I --> D
subgraph "回饋與控制"
J["電壓採樣"] --> K["誤差放大器"]
K --> L["數字補償器"]
L --> H
M["電流採樣"] --> N["過流保護"]
N --> H
end
subgraph "PCB熱管理"
O["散熱焊盤"] --> P["散熱過孔"]
P --> Q["內層銅箔"]
R["頂層敷銅"] --> S["熱量擴散區"]
end
D --> O
D --> R
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
end
智能負載管理拓撲詳圖
graph TB
subgraph "多路負載智能開關系統"
A["MCU GPIO控制"] --> B["電平轉換電路"]
B --> C["VBQF2625 \n 感測器1開關"]
B --> D["VBQF2625 \n 感測器2開關"]
B --> E["VBQF2625 \n 通信模組開關"]
B --> F["VBQF2625 \n 備份系統開關"]
C --> G["鐳射雷達 \n 20V/2A"]
D --> H["多光譜感測器 \n 12V/1.5A"]
E --> I["5G模組 \n 3.8V/3A"]
F --> J["備份存儲 \n 5V/0.5A"]
subgraph "狀態監控與保護"
K["電流檢測"] --> L["過流比較器"]
M["溫度檢測"] --> N["過溫保護"]
O["開關時序控制"] --> P["狀態記錄"]
end
G --> K
H --> K
I --> K
J --> K
C --> M
D --> M
E --> M
F --> M
L --> Q["故障鎖存"]
N --> Q
Q --> R["緊急關斷"]
R --> C
R --> D
R --> E
R --> F
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
高壓防護與熱管理拓撲詳圖
graph LR
subgraph "高壓輸入防護與隔離"
A["機載電源輸入"] --> B["保險絲"]
B --> C["輸入濾波器"]
C --> D["VBI2102M \n 主防護開關"]
D --> E["主電源匯流排"]
subgraph "冗餘路徑"
F["VBI2102M \n 冗餘切換開關"]
G["備份電池"]
end
E --> F
G --> F
F --> H["冗餘電源匯流排"]
subgraph "介面保護"
I["TVS陣列"] --> J["RS-485介面"]
K["ESD防護"] --> L["UART介面"]
M["CAN匯流排保護"] --> N["CAN收發器"]
end
E --> I
E --> K
E --> M
end
subgraph "三級熱管理架構"
subgraph "一級:PCB級散熱"
O["VBGQF1302"] --> P["DFN8散熱焊盤"]
P --> Q["散熱過孔陣列"]
Q --> R["內層銅箔"]
end
subgraph "二級:佈局級散熱"
S["VBQF2625陣列"] --> T["大面積敷銅"]
U["高熱元件"] --> V["間距優化"]
W["發熱元件"] --> X["氣流通道"]
end
subgraph "三級:系統級散熱"
Y["機殼設計"] --> Z["通風口"]
AA["環境溫度"] --> AB["自然對流"]
AC["強制風冷"] --> AD["風扇控制"]
end
O --> P
S --> T
Y --> Z
AD --> AC
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style O fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
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