graph LR
subgraph "永磁同步电机驱动三相桥"
A[高压电池80V] --> B["直流母线电容"]
B --> subgraph "三相逆变桥"
Q_UH["VBM1803 \n 上管U相"]
Q_UL["VBM1803 \n 下管U相"]
Q_VH["VBM1803 \n 上管V相"]
Q_VL["VBM1803 \n 下管V相"]
Q_WH["VBM1803 \n 上管W相"]
Q_WL["VBM1803 \n 下管W相"]
end
Q_UH --> C[U相输出]
Q_UL --> C
Q_VH --> D[V相输出]
Q_VL --> D
Q_WH --> E[W相输出]
Q_WL --> E
C --> F[PMSM电机U相]
D --> G[PMSM电机V相]
E --> H[PMSM电机W相]
I[电机控制器] --> J[栅极驱动器]
J --> Q_UH
J --> Q_UL
J --> Q_VH
J --> Q_VL
J --> Q_WH
J --> Q_WL
end
subgraph "保护与检测电路"
K[电流传感器] --> I
L[温度传感器] --> M[热管理控制器]
M --> N[散热风扇/液冷泵]
O[过流比较器] --> P[故障锁存]
P --> Q[关断信号]
Q --> J
end
style Q_UH fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q_UL fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
车载高压DC-DC电源拓扑详图
graph TB
subgraph "SiC MOSFET LLC谐振变换器"
A["高压输入 \n 600VDC"] --> B["输入滤波电容"]
B --> subgraph "全桥SiC MOSFET"
Q1["VBP117MC06 \n SiC MOSFET"]
Q2["VBP117MC06 \n SiC MOSFET"]
Q3["VBP117MC06 \n SiC MOSFET"]
Q4["VBP117MC06 \n SiC MOSFET"]
end
Q1 --> C["谐振电感Lr"]
Q2 --> C
Q3 --> C
Q4 --> C
C --> D["谐振电容Cr"]
D --> E["高频变压器 \n 初级"]
E --> F["变压器次级"]
F --> subgraph "同步整流级"
SR1["同步整流MOSFET"]
SR2["同步整流MOSFET"]
end
SR1 --> G["输出滤波电感"]
SR2 --> G
G --> H["输出滤波电容"]
H --> I["低压输出24VDC"]
J[LLC控制器] --> K["SiC专用驱动器"]
K --> Q1
K --> Q2
K --> Q3
K --> Q4
end
subgraph "保护与反馈"
L[输出电压采样] --> J
M[谐振电流检测] --> J
N[过压保护] --> O[故障处理]
P[过流保护] --> O
O --> Q[保护关断]
Q --> K
end
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style Q2 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助负载与传感器开关拓扑详图
graph LR
subgraph "智能负载开关矩阵"
A[MCU GPIO 3.3V] --> B[电平转换电路]
B --> subgraph "多通道负载开关"
SW_SENSOR1["VBI1322G \n 传感器通道1"]
SW_SENSOR2["VBI1322G \n 传感器通道2"]
SW_SENSOR3["VBI1322G \n 传感器通道3"]
SW_LIGHT["VBI1322G \n 照明通道"]
SW_COMM["VBI1322G \n 通信通道"]
end
SW_SENSOR1 --> C["激光雷达传感器"]
SW_SENSOR2 --> D["视觉相机"]
SW_SENSOR3 --> E["编码器/IMU"]
SW_LIGHT --> F["LED照明阵列"]
SW_COMM --> G["CAN/WiFi模块"]
subgraph "电源分配"
H["24V辅助电源"] --> I["输入滤波"]
I --> SW_SENSOR1
I --> SW_SENSOR2
I --> SW_SENSOR3
I --> SW_LIGHT
I --> SW_COMM
end
end
subgraph "保护与EMC设计"
J[TVS保护阵列] --> K["各负载端口"]
L[RC吸收网络] --> M[感性负载端口]
N[续流二极管] --> O[电机负载]
P[三防漆涂层] --> Q[PCB防护]
end
style SW_SENSOR1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style SW_SENSOR2 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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