graph LR
subgraph "三相逆变桥臂设计"
A[主直流母线] --> B["VBM1401 \n 上桥臂U相"]
B --> C[U相输出]
C --> D[主驱电机U相]
A --> E["VBM1401 \n 上桥臂V相"]
E --> F[V相输出]
F --> G[主驱电机V相]
A --> H["VBM1401 \n 上桥臂W相"]
H --> I[W相输出]
I --> J[主驱电机W相]
K[逆变器地] --> L["VBM1401 \n 下桥臂U相"]
L --> C
K --> M["VBM1401 \n 下桥臂V相"]
M --> F
K --> N["VBM1401 \n 下桥臂W相"]
N --> I
end
subgraph "驱动与保护电路"
O[主驱MCU] --> P[智能栅极驱动器]
P --> B
P --> L
subgraph "相保护电路"
Q[RC缓冲网络]
R[TVS瞬态抑制]
S[电流检测电阻]
end
C --> Q
C --> R
C --> S
S --> T[过流比较器]
T --> U[故障锁存]
U --> V[驱动关断]
V --> P
end
subgraph "热管理设计"
W[液冷板] --> B
W --> L
X[NTC温度传感器] --> Y[温度监测IC]
Y --> O
O --> Z[PWM调制]
Z --> AA[液冷泵控制]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style L fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
冗余电源与负载管理拓扑详图
graph TB
subgraph "冗余电源切换系统"
A[主电源24V] --> B["VBA2107 \n 主电源开关"]
C[备用电池24V] --> D["VBA2107 \n 备用电源开关"]
B --> E[域控制器电源总线]
D --> E
F[域控MCU] --> G[切换控制逻辑]
G --> H[主开关驱动]
G --> I[备用开关驱动]
H --> B
I --> D
subgraph "诊断反馈"
J[电流检测]
K[电压检测]
L[温度检测]
end
B --> J
E --> K
D --> L
J --> F
K --> F
L --> F
end
subgraph "智能负载管理"
M[域控制器电源总线] --> N["VB5222 \n 激光雷达开关"]
M --> O["VB5222 \n 摄像头开关"]
M --> P["VB5222 H桥 \n 车门锁驱动"]
M --> Q["VB5222 H桥 \n 灯组驱动"]
subgraph "VB5222双路结构"
direction LR
R["N+P沟道集成 \n ±20V能力"]
end
N --> S[激光雷达]
O --> T[摄像头]
P --> U[车门锁电机]
Q --> V[LED灯组]
F --> W[负载控制信号]
W --> N
W --> O
W --> P
W --> Q
subgraph "保护电路"
X[过流保护]
Y[短路保护]
Z[反向保护]
end
S --> X
T --> Y
U --> Z
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护电路拓扑详图
graph LR
subgraph "三级散热系统"
A["一级: 微通道液冷板"] --> B["主驱MOSFET \n VBM1401"]
C["二级: 针状风冷散热器"] --> D["电源开关 \n VBA2107"]
E["三级: 2oz厚铜箔PCB"] --> F["负载开关 \n VB5222"]
subgraph "温度监测网络"
G["MOSFET NTC"]
H["散热器NTC"]
I["环境NTC"]
end
G --> J[温度采集IC]
H --> J
I --> J
J --> K[热管理MCU]
K --> L[风扇PWM]
K --> M[液冷泵控制]
K --> N[负载降额]
L --> O[强制风冷风扇]
M --> P[液冷循环泵]
end
subgraph "电气保护网络"
Q["TVS阵列 \n ISO 7637-2"] --> R[主电源输入]
S["RC缓冲电路"] --> T[逆变器开关节点]
U["肖特基二极管"] --> V[感性负载]
subgraph "故障检测"
W[高精度电流检测]
X[快速比较器]
Y[故障锁存器]
end
W --> X
X --> Y
Y --> Z[系统关断]
Z --> B
Z --> D
subgraph "功能安全"
AA[冗余电源切换]
AB[故障注入测试]
AC[ASIL-D诊断]
end
AA --> AD[主备切换<2ms]
AB --> AE[安全机制验证]
AC --> AF[健康状态监测]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBA2107规格书
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