graph TB
subgraph "三相双向变流器主电路"
A["电网输入 \n AC 380V"] --> B["LCL滤波器"]
B --> C["三相桥臂"]
subgraph "桥臂开关管组"
Q_A1["VBP112MC100-4L \n 上管"]
Q_A2["VBP112MC100-4L \n 下管"]
Q_B1["VBP112MC100-4L \n 上管"]
Q_B2["VBP112MC100-4L \n 下管"]
Q_C1["VBP112MC100-4L \n 上管"]
Q_C2["VBP112MC100-4L \n 下管"]
end
C --> Q_A1
C --> Q_A2
C --> Q_B1
C --> Q_B2
C --> Q_C1
C --> Q_C2
Q_A1 --> D["直流母线正极 \n 800VDC"]
Q_A2 --> E["直流母线负极"]
Q_B1 --> D
Q_B2 --> E
Q_C1 --> D
Q_C2 --> E
end
subgraph "驱动与保护"
F["SiC专用驱动器"] --> G["隔离驱动通道"]
G --> Q_A1
G --> Q_A2
G --> Q_B1
G --> Q_B2
G --> Q_C1
G --> Q_C2
H["电压采样"] --> I["MCU/DSP控制器"]
J["电流采样"] --> I
K["温度采样"] --> I
I --> F
end
subgraph "缓冲与保护电路"
L["直流母线电容组"] --> M["RCD缓冲网络"]
M --> Q_A1
M --> Q_B1
M --> Q_C1
N["MOV压敏电阻"] --> D
N --> E
end
style Q_A1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
高压DC/DC变换器拓扑详图
graph LR
subgraph "LLC谐振变换器"
A["高压直流输入 \n 800VDC"] --> B["输入滤波电容"]
B --> C["LLC谐振腔 \n Lr+Lm+Cr"]
C --> D["高频变压器 \n 初级"]
D --> E["开关节点"]
E --> F["VBMB17R06 \n 700V/6A"]
F --> G["初级地"]
end
subgraph "同步整流与输出"
D2["变压器次级"] --> H["同步整流桥"]
subgraph "同步整流MOSFET"
Q_SR1["同步整流管1"]
Q_SR2["同步整流管2"]
end
H --> Q_SR1
H --> Q_SR2
Q_SR1 --> I["输出滤波电感"]
Q_SR2 --> J["输出滤波电容"]
I --> J
J --> K["电池直流输出 \n 200-500VDC"]
end
subgraph "控制与保护"
L["LLC控制器"] --> M["隔离驱动器"]
M --> F
N["同步整流控制器"] --> O["同步整流驱动器"]
O --> Q_SR1
O --> Q_SR2
P["RCD钳位电路"] --> F
Q["过流保护电路"] --> L
R["过温保护"] --> L
end
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
智能负载管理拓扑详图
graph TB
subgraph "多通道智能开关"
A["MCU GPIO控制"] --> B["电平转换电路"]
B --> C["VBA1303C \n 通道1"]
B --> D["VBA1303C \n 通道2"]
B --> E["VBA1303C \n 通道3"]
B --> F["VBA1303C \n 通道4"]
G["12V辅助电源"] --> C
G --> D
G --> E
G --> F
C --> H["负载1:散热风扇"]
D --> I["负载2:通信模块"]
E --> J["负载3:显示单元"]
F --> K["负载4:安全回路"]
H --> L["地"]
I --> L
J --> L
K --> L
end
subgraph "并联扩流应用"
M["大电流负载"] --> N["多路VBA1303C并联"]
O["均流电阻"] --> P["电流采样"]
P --> Q["MCU ADC"]
Q --> R["均流控制算法"]
R --> B
end
subgraph "PCB布局优化"
S["2oz厚铜PCB"] --> T["散热焊盘阵列"]
U["过孔阵列 \n 孔径0.3mm"] --> V["内部接地层"]
W["去耦电容"] --> C
W --> D
W --> E
W --> F
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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