graph LR
subgraph "三相逆变桥拓扑"
A["400V-800V直流母线"] --> B["直流滤波电容"]
B --> C["U相上桥"]
B --> D["V相上桥"]
B --> E["W相上桥"]
C -->|VBM18R06SE| F["U相输出"]
D -->|VBM18R06SE| G["V相输出"]
E -->|VBM18R06SE| H["W相输出"]
F --> I["U相下桥"]
G --> J["V相下桥"]
H --> K["W相下桥"]
I -->|VBM18R06SE| L["逆变器地"]
J -->|VBM18R06SE| L
K -->|VBM18R06SE| L
end
subgraph "隔离栅极驱动电路"
M["PWM控制器"] --> N["信号隔离器"]
N --> O["高压栅极驱动器"]
O --> P["门极电阻网络"]
P --> C
P --> D
P --> E
P --> I
P --> J
P --> K
Q["Kelvin源极连接"] --> R["减小寄生电感"]
S["米勒钳位电路"] --> T["防止误导通"]
U["TVS保护"] --> O
end
subgraph "保护与监测"
V["直流母线电压检测"] --> W["过压保护"]
X["相电流霍尔传感器"] --> Y["过流保护"]
Z["桥臂温度传感器"] --> AA["过温保护"]
W --> BB["故障锁存"]
Y --> BB
AA --> BB
BB --> CC["快速关断信号"]
CC --> O
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
高压直流电源分配与管理拓扑详图
graph TB
subgraph "高压配电架构"
A["400V-800V主母线"] --> B["母线滤波电容"]
B --> C["预充电路"]
C --> D["主接触器"]
D --> E["100V二次配电总线"]
end
subgraph "固态断路器与负载分配"
E --> F["电流检测电阻"]
F --> G["VBMB1104NA \n 固态断路器"]
G --> H["100V分配母线"]
subgraph "多路负载开关"
I["VBMB1104NA \n 负载开关1"]
J["VBMB1104NA \n 负载开关2"]
K["VBMB1104NA \n 负载开关3"]
L["VBMB1104NA \n 负载开关4"]
end
H --> I
H --> J
H --> K
H --> L
I --> M["模拟器电源 \n 负载1"]
J --> N["航电测试 \n 负载2"]
K --> O["传感器阵列 \n 负载3"]
L --> P["备用负载 \n 通道"]
M --> Q["高压地"]
N --> Q
O --> Q
P --> Q
end
subgraph "驱动与控制"
R["中压驱动器"] --> S["门极驱动网络"]
S --> G
S --> I
S --> J
S --> K
S --> L
T["控制MCU"] --> U["开关控制逻辑"]
U --> R
V["状态反馈"] --> T
end
subgraph "保护电路"
W["RC吸收电路"] --> G
X["TVS瞬态抑制"] --> H
Y["快速熔断器"] --> E
Z["过流比较器"] --> AA["故障保护"]
AA --> BB["紧急关断"]
BB --> R
end
style G fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
精密航电与传感器供电拓扑详图
graph LR
subgraph "28V航空低压配电系统"
A["28V航空总线"] --> B["输入滤波器"]
B --> C["π型滤波网络"]
C --> D["28V配电母线"]
end
subgraph "多通道负载开关矩阵"
subgraph "通道1:飞控计算机"
E["VBFB1302 \n 开关管1"]
F["电流检测"]
G["π型输出滤波"]
end
subgraph "通道2:通信模块"
H["VBFB1302 \n 开关管2"]
I["电流检测"]
J["π型输出滤波"]
end
subgraph "通道3:传感器簇"
K["VBFB1302 \n 开关管3"]
L["电流检测"]
M["π型输出滤波"]
end
subgraph "通道4:数据采集"
N["VBFB1302 \n 开关管4"]
O["电流检测"]
P["π型输出滤波"]
end
D --> E
D --> H
D --> K
D --> N
E --> F
H --> I
K --> L
N --> O
F --> G
I --> J
L --> M
O --> P
G --> Q["飞控计算机 \n 供电输出"]
J --> R["通信模块 \n 供电输出"]
M --> S["传感器簇 \n 供电输出"]
P --> T["数据采集 \n 供电输出"]
end
subgraph "精密控制与监测"
U["时序控制器"] --> V["大电流缓冲器"]
V --> E
V --> H
V --> K
V --> N
W["电压监测ADC"] --> X["电压闭环控制"]
Y["电流监测ADC"] --> Z["电流限制保护"]
AA["温度传感器"] --> BB["热管理逻辑"]
X --> U
Z --> U
BB --> U
end
subgraph "PCB热设计与保护"
CC["大面积功率铜层"] --> E
CC --> H
CC --> K
CC --> N
DD["热过孔阵列"] --> EE["散热增强"]
FF["TVS保护"] --> V
GG["反向二极管"] --> E
GG --> H
GG --> K
GG --> N
end
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style H fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBM18R06SE规格书
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