graph LR
subgraph "半橋驅動拓撲"
A["24VDC輸入"] --> B["輸入濾波電容"]
B --> C["VBGQF1408 \n 上橋MOSFET"]
C --> D["超聲波振子"]
D --> E["VBGQF1408 \n 下橋MOSFET"]
E --> F["功率地"]
G["PWM控制器"] --> H["半橋驅動器"]
H --> C
H --> E
end
subgraph "諧振匹配網路"
D --> I["匹配電感"]
I --> J["諧振電容"]
J --> K["輸出變壓器 \n (可選)"]
K --> L["壓電陶瓷振子"]
end
subgraph "保護與檢測"
M["電流檢測 \n 採樣電阻"] --> N["比較器"]
N --> O["過流保護"]
O --> P["關斷信號"]
P --> G
Q["電壓檢測"] --> R["過壓保護"]
R --> P
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style L fill:#f3e5f5,stroke:#9c27b0,stroke-width:2px
風扇/水泵電機驅動拓撲詳圖
graph TB
subgraph "雙P溝道高邊驅動"
A["24V電源"] --> B["VBBD4290 \n 漏極1"]
A --> C["VBBD4290 \n 漏極2"]
D["MCU PWM"] --> E["電平轉換器 \n 3.3V→12V"]
E --> F["VBBD4290 \n 柵極1"]
E --> G["VBBD4290 \n 柵極2"]
B --> H["風扇電機正極"]
C --> I["水泵電機正極"]
H --> J["電機地"]
I --> J
end
subgraph "H橋驅動配置(可選)"
K["VBBD4290 \n P溝道1"] --> L["電機端子A"]
M["VBK1695 \n N溝道"] --> N["電機端子B"]
O["VBBD4290 \n P溝道2"] --> P["電機地"]
Q["N溝道驅動器"] --> M
end
subgraph "保護電路"
R["RC緩衝電路"] --> S["電機端口"]
T["TVS管"] --> U["電源入口"]
V["反電動勢 \n 吸收二極體"] --> W["電機繞組"]
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style K fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能管理與信號切換拓撲詳圖
graph LR
subgraph "感測器信號路徑管理"
A["濕度感測器1"] --> B["VBTA5220N \n 通道1(N)"]
C["濕度感測器2"] --> D["VBTA5220N \n 通道2(P)"]
E["水位感測器"] --> F["VBTA5220N \n 通道3(N)"]
G["溫度感測器"] --> H["VBTA5220N \n 通道4(P)"]
B --> I["模擬多路選擇器"]
D --> I
F --> I
H --> I
I --> J["MCU ADC輸入"]
K["MCU GPIO"] --> L["VBTA5220N \n 控制邏輯"]
L --> B
L --> D
L --> F
L --> H
end
subgraph "安全互鎖控制"
M["水箱在位檢測"] --> N["VBTA5220N \n 互鎖開關1"]
O["水位足夠信號"] --> P["VBTA5220N \n 互鎖開關2"]
Q["MCU安全邏輯"] --> R["與門電路"]
N --> R
P --> R
R --> S["使能信號"]
S --> T["超聲波驅動使能"]
S --> U["UV殺菌燈使能"]
S --> V["加熱器使能"]
end
subgraph "低功耗待機管理"
W["主電源24V"] --> X["VBTA5220N \n 電源切換開關"]
Y["待機電源 \n 3.3V"] --> Z["MCU待機電路"]
X --> Z
AA["MCU喚醒信號"] --> BB["VBTA5220N \n 控制端"]
BB --> X
X --> CC["週邊電路電源 \n WiFi/顯示等"]
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style X fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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