graph LR
subgraph "三相PFC升壓電路"
A["三相交流輸入 \n 380-415VAC"] --> B["EMI輸入濾波器"]
B --> C["三相整流橋"]
C --> D["PFC升壓電感"]
D --> E["PFC開關節點"]
E --> F["VBP165I75 \n 650V/75A IGBT"]
F --> G["高壓直流母線 \n 400VDC"]
H["PFC控制器"] --> I["IGBT專用驅動器"]
I --> F
G -->|電壓回饋| H
end
subgraph "LLC諧振變換電路"
G --> J["LLC諧振腔 \n Lr+Lm+Cr"]
J --> K["高頻變壓器初級"]
K --> L["LLC開關節點"]
L --> M["VBP165I75 \n 650V/75A IGBT"]
M --> N["初級地"]
O["LLC諧振控制器"] --> P["IGBT專用驅動器"]
P --> M
K -->|諧振電流檢測| O
J -->|諧振電容電壓| O
end
subgraph "驅動與保護電路"
Q["隔離電源"] --> I
Q --> P
R["負壓關斷電路"] --> I
S["RC吸收電路"] --> F
S --> M
T["過流保護比較器"] --> U["故障鎖存"]
U --> V["關斷信號"]
V --> I
V --> P
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
DC-DC次級同步整流拓撲詳圖
graph TB
subgraph "同步整流橋臂配置"
A["變壓器次級繞組"] --> B["同步整流節點"]
B --> C["VBP165R70SFD \n 650V/70A N-MOS"]
C --> D["輸出濾波電感"]
D --> E["輸出濾波電容陣列"]
E --> F["直流輸出12V/滿載"]
B --> G["VBP165R70SFD \n 650V/70A N-MOS"]
G --> H["輸出地"]
I["同步整流控制器"] --> J["MOSFET柵極驅動器"]
J --> C
J --> G
end
subgraph "同步整流控制時序"
K["變壓器次級電壓檢測"] --> I
L["電流方向檢測"] --> I
M["死區時間控制"] --> I
N["共通防止邏輯"] --> I
O["自適應關斷延遲"] --> I
end
subgraph "熱管理與降額設計"
P["溫度感測器"] --> Q["熱管理MCU"]
Q --> R["電流降額曲線"]
R --> S["動態Rds(on)補償"]
T["結溫估算模型"] --> U["過溫預警"]
U --> V["降頻保護"]
end
subgraph "效率優化措施"
W["多相並聯均流"] --> X["交錯相位控制"]
Y["輕載模式切換"] --> Z["突發模式控制"]
AA["開關頻率優化"] --> AB["損耗平衡演算法"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style G fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
高速強力風扇驅動拓撲詳圖
graph LR
subgraph "多路風扇PWM驅動系統"
A["MCU PWM輸出"] --> B["電平轉換電路"]
B --> C["風扇預驅晶片"]
C --> D["VBGE1402 \n 40V/110A N-MOS"]
D --> E["高轉速風扇 \n 12V/24V 5A"]
F["風扇轉速回饋"] --> G["MCU ADC輸入"]
H["溫度感測器陣列"] --> I["PID調速演算法"]
I --> A
end
subgraph "風扇保護與診斷"
J["堵轉檢測電路"] --> K["故障標誌位"]
L["過流保護"] --> M["限流電路"]
N["軟啟動控制"] --> O["緩啟動時序"]
P["風扇健康監測"] --> Q["預測性維護"]
end
subgraph "散熱風道管理"
R["進氣溫度感測器"] --> S["風道控制器"]
T["排氣溫度感測器"] --> S
U["風扇分區控制"] --> V["差異化PWM"]
W["風壓平衡演算法"] --> X["最優風量分配"]
end
subgraph "PCB熱設計"
Y["TO-252封裝"] --> Z["大面積敷銅散熱"]
AA["熱過孔陣列"] --> BB["內部散熱層"]
CC["環境溫度監測"] --> DD["動態降額控制"]
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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