graph LR
subgraph "風機半橋驅動"
A[DC_BUS] --> B["VBQF3310G \n 高側N-MOS"]
B --> C[開關節點]
C --> D["VBQF3310G \n 低側N-MOS"]
D --> E[GND]
C --> F[風機負載]
G[PWM控制器] --> H[柵極驅動器]
H --> B
H --> D
MCU --> G
end
subgraph "智能負載開關通道"
subgraph "UV消毒控制"
I[MCU_GPIO1] --> J[電平轉換]
J --> K["VBKB4265 \n P-MOS1"]
VCC_12V[12V電源] --> K
K --> L[UV LED陣列]
L --> M[限流電阻]
M --> N[GND]
end
subgraph "照明控制"
O[MCU_GPIO2] --> P[電平轉換]
P --> Q["VBKB4265 \n P-MOS2"]
VCC_12V --> Q
Q --> R[LED燈帶]
R --> S[恒流驅動]
S --> N
end
subgraph "感測器供電"
T[MCU_GPIO3] --> U[電平轉換]
U --> V["VBKB4265 \n P-MOS3"]
VCC_5V[5V電源] --> V
V --> W[感測器模組]
W --> N
end
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style K fill:#fff3e0,stroke:#ff9800,stroke-width:2px
保護與熱管理拓撲詳圖
graph TB
subgraph "三級熱管理架構"
subgraph "一級散熱:主MOSFET"
A[散熱片/PCB敷銅] --> B["VBGQF1806陣列"]
C[溫度感測器1] --> D[MCU]
end
subgraph "二級散熱:輔助MOSFET"
E[PCB敷銅] --> F["VBQF3310G"]
G[溫度感測器2] --> D
end
subgraph "三級散熱:負載開關"
H[自然散熱] --> I["VBKB4265陣列"]
end
D --> J[風扇PWM控制]
J --> K[系統風扇]
D --> L[降頻保護]
end
subgraph "電氣保護網路"
subgraph "電壓尖峰抑制"
M[TVS管陣列] --> N["電機端口"]
O[RC緩衝電路] --> P["H橋開關節點"]
Q[壓敏電阻] --> R["電源輸入"]
end
subgraph "柵極保護"
S[柵極電阻] --> T["MOSFET柵極"]
U[柵極TVS] --> T
V[下拉電阻] --> T
end
subgraph "故障檢測與處理"
W[過流檢測] --> X[比較器]
Y[堵轉檢測] --> Z[計時器]
X --> FAULT[故障鎖存]
Z --> FAULT
FAULT --> DISABLE[全局關斷]
DISABLE --> B
DISABLE --> F
end
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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