graph LR
subgraph "三相PFC升压电路"
A["三相380VAC输入"] --> B["EMI滤波器"]
B --> C["三相整流桥"]
C --> D["PFC升压电感"]
D --> E["PFC开关节点"]
subgraph "SiC MOSFET桥臂"
F["VBP117MC06 \n SiC N-MOS \n 1700V/6A"]
G["VBP117MC06 \n SiC N-MOS \n 1700V/6A"]
end
E --> F
E --> G
F --> H["高压直流母线 \n 540-800VDC"]
G --> H
I["PFC控制器"] --> J["SiC专用驱动器"]
J --> F
J --> G
H -->|电压反馈| I
end
subgraph "驱动与保护电路"
K["+18V/-3V驱动"] --> J
L["栅极保护TVS"] --> F
L --> G
M["RC吸收网络"] --> E
N["电流检测"] --> I
O["温度检测"] --> I
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
中级变换拓扑详图
graph TB
subgraph "LLC谐振变换器"
A["高压输入"] --> B["LLC谐振腔 \n Lr, Cr"]
B --> C["高频变压器"]
C --> D["变压器次级"]
subgraph "初级侧MOSFET"
E["VBMB1101N \n 100V/90A"]
F["VBMB1101N \n 100V/90A"]
end
subgraph "同步整流MOSFET"
G["VBMB1101N \n 100V/90A"]
H["VBMB1101N \n 100V/90A"]
end
A --> E
A --> F
E --> GND1["初级地"]
F --> GND1
D --> G
D --> H
G --> I["输出滤波"]
H --> I
I --> J["48-72VDC输出"]
K["LLC控制器"] --> L["栅极驱动器"]
L --> E
L --> F
M["同步整流控制器"] --> N["同步整流驱动器"]
N --> G
N --> H
end
subgraph "同步Buck变换器"
O["输入电压"] --> P["Buck电感"]
subgraph "Buck MOSFET"
Q["VBMB1101N \n 100V/90A"]
R["VBMB1101N \n 100V/90A"]
end
O --> Q
Q --> S["开关节点"]
S --> P
P --> T["输出电容"]
T --> U["48-72VDC输出"]
R --> GND2["地"]
V["Buck控制器"] --> W["双路驱动器"]
W --> Q
W --> R
end
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style G fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q fill:#fff3e0,stroke:#ff9800,stroke-width:2px
低压同步整流拓扑详图
graph LR
subgraph "大电流同步整流桥"
A["变压器次级/输入"] --> B["同步整流节点"]
subgraph "多相并联MOSFET"
C["VBGL11203 \n 120V/190A"]
D["VBGL11203 \n 120V/190A"]
E["VBGL11203 \n 120V/190A"]
F["VBGL11203 \n 120V/190A"]
end
B --> C
B --> D
B --> E
B --> F
C --> G["输出电感"]
D --> G
E --> G
F --> G
G --> H["输出电容阵列"]
H --> I["12V/24V输出"]
I --> J["大电流负载"]
end
subgraph "负载点(PoL)变换器"
K["中级总线输入"] --> L["多相Buck控制器"]
subgraph "多相功率级"
M["相位1: VBGL11203"]
N["相位2: VBGL11203"]
O["相位3: VBGL11203"]
P["相位4: VBGL11203"]
end
L --> M
L --> N
L --> O
L --> P
M --> Q["输出滤波"]
N --> Q
O --> Q
P --> Q
Q --> R["精确电压输出 \n 1-12V"]
end
subgraph "热管理与均流"
S["温度传感器"] --> T["均流控制器"]
U["电流检测"] --> T
T --> V["动态相位管理"]
V --> L
W["PCB大面积敷铜"] --> C
W --> M
X["散热片"] --> C
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
点击下载：VBMB1101N规格书
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