graph LR
subgraph "三相有源PFC拓撲"
A[L1 相輸入] --> B[三相EMI濾波器]
C[L2 相輸入] --> B
D[L3 相輸入] --> B
B --> E[三相整流橋]
E --> F[PFC升壓電感組]
F --> G[PFC開關節點]
G --> H["VBPB19R47S \n 900V/47A \n TO3P"]
H --> I[高壓直流母線]
J[PFC控制器] --> K[柵極驅動器]
K --> H
I -->|電壓回饋| J
L[輸入電流檢測] --> J
M[母線電壓檢測] --> J
end
subgraph "驅動與保護電路"
N[驅動電源] --> K
O[TVS保護] --> K
P[RCD緩衝電路] --> H
Q[過流檢測] --> R[保護邏輯]
R --> S[故障鎖存]
S --> T[關斷信號]
T --> J
end
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
SiC DC-DC變換器詳細拓撲
graph TB
subgraph "LLC/移相全橋功率級"
A[高壓直流母線] --> B[諧振電容]
B --> C[諧振電感]
C --> D[高頻變壓器初級]
D --> E[上橋臂開關節點]
D --> F[下橋臂開關節點]
E --> G["VBL712MC100K \n 1200V/100A \n SiC MOSFET"]
F --> H["VBL712MC100K \n 1200V/100A \n SiC MOSFET"]
G --> A
H --> I[初級地]
J[LLC控制器] --> K[SiC專用驅動器]
K --> G
K --> H
end
subgraph "SiC驅動與保護"
L[+18V驅動電源] --> K
M[-3V負壓偏置] --> K
N[米勒鉗位電路] --> K
O[去飽和檢測] --> P[故障保護]
P --> Q[快速關斷]
Q --> K
R[溫度監控] --> S[過溫保護]
S --> Q
end
subgraph "同步整流級"
T[變壓器次級] --> U[同步整流橋]
U --> V[輸出濾波電感]
V --> W[輸出電容組]
W --> X[電池直流輸出]
Y[同步整流控制器] --> Z[同步整流驅動器]
Z --> U
end
style G fill:#4caf50,stroke:#2e7d32,stroke-width:2px,color:#ffffff
style H fill:#4caf50,stroke:#2e7d32,stroke-width:2px,color:#ffffff
輔助電源與智能負載管理拓撲
graph LR
subgraph "輔助反激電源"
A[輔助繞組] --> B[整流二極體]
B --> C[濾波電容]
C --> D[12V LDO]
D --> E[12V輔助匯流排]
E --> F[5V LDO]
F --> G[5V數字匯流排]
end
subgraph "雙路智能負載開關應用"
H[MCU GPIO 1] --> I[電平轉換器]
I --> J["VB3222 Channel 1 \n Gate"]
K[MCU GPIO 2] --> L[電平轉換器]
L --> M["VB3222 Channel 2 \n Gate"]
N[12V輔助匯流排] --> O["VB3222 Drain 1"]
N --> P["VB3222 Drain 2"]
Q["VB3222 Source 1"] --> R[負載1: 散熱風扇]
S["VB3222 Source 2"] --> T[負載2: 通信模組]
R --> U[地]
T --> U
end
subgraph "時序管理與保護"
V[上電時序控制] --> W[MCU]
X[故障隔離邏輯] --> W
Y[電流檢測] --> Z[過流保護]
Z --> AA[自動關斷]
AA --> J
AA --> M
end
style J fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
熱管理與保護電路拓撲
graph TB
subgraph "三級熱管理架構"
A["一級: 液冷散熱系統"] --> B["液冷板"]
B --> C["VBL712MC100K SiC MOSFET"]
B --> D["VBL712MC100K SiC MOSFET"]
E["二級: 強制風冷系統"] --> F["鋁散熱器"]
F --> G["VBPB19R47S PFC MOSFET"]
H["三級: PCB熱設計"] --> I["大面積敷銅"]
I --> J["VB3222 雙路MOSFET"]
I --> K["控制IC與驅動器"]
end
subgraph "溫度監控網路"
L["NTC 感測器1"] --> M["溫度採集電路"]
N["NTC 感測器2"] --> M
O["NTC 感測器3"] --> M
M --> P["MCU ADC介面"]
P --> Q["溫度保護演算法"]
Q --> R["分級降溫策略"]
R --> S["風扇PWM控制"]
R --> T["泵速調節"]
R --> U["功率降額控制"]
end
subgraph "電氣保護網路"
V["RCD緩衝電路"] --> G
W["RC吸收電路"] --> C
W --> D
X["TVS陣列"] --> Y["柵極驅動晶片"]
Z["肖特基二極體"] --> AA["同步整流管"]
AB["電流互感器"] --> AC["比較器陣列"]
AC --> AD["故障鎖存器"]
AD --> AE["系統關斷"]
AE --> C
AE --> D
AE --> G
end
style C fill:#4caf50,stroke:#2e7d32,stroke-width:2px,color:#ffffff
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style J fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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