graph TB
subgraph "高壓諧振全橋逆變"
A["PFC輸出 \n 400VDC"] --> B["全橋開關節點"]
B --> C["VBP19R09S \n (高壓MOSFET)"]
C --> D["諧振電感Lr"]
D --> E["諧振電容Cr"]
E --> F["高頻變壓器初級"]
F --> G["全橋開關節點"]
G --> H["VBP19R09S \n (高壓MOSFET)"]
H --> I["高壓地"]
subgraph "變壓器與磁控管驅動"
J["變壓器次級"] --> K["高壓倍壓整流"]
K --> L["磁控管陽極"]
M["燈絲電源"] --> N["磁控管燈絲"]
end
F --> J
O["諧振控制器"] --> P["隔離柵極驅動器"]
P --> C
P --> H
Q["電壓回饋"] --> O
R["電流檢測"] --> O
end
subgraph "驅動與保護細節"
P --> S["負壓關斷電路"]
T["RC緩衝電路"] --> C
T --> H
U["TVS保護"] --> P
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
低壓DC-DC與負載管理拓撲詳圖
graph LR
subgraph "同步整流Buck轉換器"
A["12V輔助電源"] --> B["輸入電容"]
B --> C["VBGQF1810 \n (上橋P-MOSFET)"]
C --> D["開關節點"]
D --> E["VBGQF1810 \n (下橋N-MOSFET)"]
E --> F["功率地"]
D --> G["Buck電感"]
G --> H["輸出電容"]
H --> I["5V/3.3V輸出"]
J["PWM控制器"] --> K["上橋驅動器"]
J --> L["下橋驅動器"]
K --> C
L --> E
I --> M["電壓回饋"]
M --> J
end
subgraph "智能負載管理通道"
N["MCU GPIO"] --> O["電平轉換"]
O --> P["VBA3328輸入"]
subgraph P ["VBA3328 雙N-MOS"]
direction LR
IN1[柵極1]
IN2[柵極2]
S1[源極1]
S2[源極2]
D1[漏極1]
D2[漏極2]
end
VCC_12V["12V匯流排"] --> D1
VCC_12V --> D2
S1 --> Q["磁控管風扇"]
S2 --> R["爐腔風扇"]
Q --> S["風扇地"]
R --> S
T["續流二極體"] --> Q
U["續流二極體"] --> R
end
subgraph "PCB熱管理設計"
V["DFN8散熱焊盤"] --> W["多層PCB敷銅"]
W --> X["過孔陣列"]
X --> Y["內部地層"]
Z["SOP8封裝"] --> AA["PCB銅箔散熱"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style P fill:#fff3e0,stroke:#ff9800,stroke-width:2px
分層熱管理與保護電路拓撲詳圖
graph TB
subgraph "三級散熱系統架構"
A["一級: 強制風冷"] --> B["高壓MOSFET散熱器"]
C["二級: PCB導熱"] --> D["低壓MOSFET敷銅"]
E["三級: 自然對流"] --> F["控制晶片佈局"]
G["磁控管溫度感測器"] --> H["MCU溫度監控"]
H --> I["風扇PWM演算法"]
I --> J["VBA3328控制"]
J --> K["風扇轉速調節"]
B --> L["環境溫度感測器"]
L --> H
end
subgraph "電氣保護網路"
M["RC吸收電路"] --> N["VBP19R09S開關節點"]
O["RCD鉗位電路"] --> P["變壓器初級"]
Q["TVS陣列"] --> R["柵極驅動晶片"]
S["續流二極體"] --> T["感性負載(風扇/電機)"]
U["電流檢測電阻"] --> V["比較器與ADC"]
V --> W["過流保護"]
X["溫度感測器"] --> Y["過溫保護"]
W --> Z["故障鎖存"]
Y --> Z
Z --> AA["系統關斷信號"]
AA --> N
AA --> BB["電源管理IC"]
end
subgraph "降額設計策略"
CC["電壓降額: 720V(80%)"] --> DD["VBP19R09S 900V"]
EE["電流降額: 根據結溫"] --> FF["VBGQF1810 51A"]
GG["熱降額: 降功率曲線"] --> HH["全系統熱設計"]
end
style N fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style J fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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