graph LR
subgraph "輸入級保護網路"
A["12VDC輸入"] --> B["保險絲"]
B --> C["壓敏電阻MOV"]
C --> D["氣體放電管GDT"]
D --> E["共模電感"]
E --> F["X電容"]
F --> G["輸入濾波節點"]
end
subgraph "主保護開關電路"
G --> H["VBL185R02 \n 柵極"]
I["驅動電路"] --> H
G --> J["VBL185R02 \n 漏極"]
J --> K["受保護母線"]
H --> L["VBL185R02 \n 源極"]
L --> M["參考地"]
end
subgraph "輔助保護元件"
N["TVS管"] -->|箝位| K
O["RC緩衝電路"] -->|吸收| J
P["熱敏電阻"] -->|限流| A
end
style J fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
AI算力模組電源拓撲詳圖
graph TB
subgraph "同步Buck轉換器"
A["12V輸入"] --> B["輸入電容組"]
B --> C["高側開關節點"]
C --> D["VBED1303 \n 高側MOSFET"]
D --> E["開關節點SW"]
E --> F["VBED1303 \n 低側MOSFET"]
F --> G["功率地"]
E --> H["功率電感"]
H --> I["輸出電容組"]
I --> J["AI核心電源軌 \n 1.8V/3.3V"]
K["PWM控制器"] --> L["高側驅動器"]
K --> M["低側驅動器"]
L --> D
M --> F
J -->|電壓回饋| K
end
subgraph "電源完整性設計"
subgraph "輸入濾波"
N["π型濾波器"] --> A
O["磁珠隔離"] --> B
end
subgraph "輸出濾波"
I --> P["多級電容陣列"]
P --> Q["局部去耦電容"]
end
subgraph "電流檢測"
R["採樣電阻"] --> S["差分放大器"]
S --> T["過流保護"]
end
end
subgraph "熱管理"
U["PCB內層鋪銅"] --> D
U --> F
V["熱過孔陣列"] --> U
end
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能負載管理拓撲詳圖
graph LR
subgraph "雙路負載開關通道"
A["MCU GPIO"] --> B["電平轉換"]
B --> C["VBBD3222 通道1"]
B --> D["VBBD3222 通道2"]
subgraph C ["VBBD3222 晶片內部"]
direction LR
CH1_GATE["柵極1"]
CH1_SOURCE["源極1"]
CH1_DRAIN["漏極1"]
end
subgraph D ["VBBD3222 晶片內部"]
direction LR
CH2_GATE["柵極2"]
CH2_SOURCE["源極2"]
CH2_DRAIN["漏極2"]
end
E["12V電源"] --> CH1_DRAIN
E --> CH2_DRAIN
CH1_SOURCE --> F["警報器負載"]
CH2_SOURCE --> G["LED負載"]
F --> H["負載地"]
G --> H
end
subgraph "負載保護電路"
I["RC緩衝"] -->|並聯| F
J["續流二極體"] -->|反向並聯| F
K["電流檢測"] -->|串聯| F
K --> L["比較器"]
L --> M["故障信號"]
M --> N["MCU中斷"]
end
subgraph "狀態診斷"
O["漏極電壓檢測"] --> CH1_DRAIN
P["源極電壓檢測"] --> CH1_SOURCE
O --> Q["開路檢測"]
P --> R["短路檢測"]
Q --> MCU
R --> MCU
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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