graph LR
subgraph "LLC全桥原边拓扑"
A[400V高压输入] --> B[输入滤波电容]
B --> C[全桥开关节点]
subgraph "全桥开关管"
Q1["VBM19R15S \n 900V/15A"]
Q2["VBM19R15S \n 900V/15A"]
Q3["VBM19R15S \n 900V/15A"]
Q4["VBM19R15S \n 900V/15A"]
end
C --> Q1
C --> Q2
C --> Q3
C --> Q4
Q1 --> D[谐振电感Lr]
Q2 --> D
Q3 --> E[谐振电容Cr]
Q4 --> E
D --> F[变压器原边]
E --> F
F --> G[变压器漏感]
G --> H[原边地]
end
subgraph "次级侧整流"
F --> I[变压器次级]
I --> J[同步整流桥]
J --> K[输出滤波]
K --> L[12V/24V输出]
end
subgraph "保护电路"
M[RCD缓冲网络] --> C
N[电压检测] --> O[过压保护]
P[电流检测] --> Q[过流保护]
O --> R[关断信号]
Q --> R
R --> S[栅极驱动器]
end
style Q1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#ffebee,stroke:#f44336,stroke-width:1px
辅助驱动系统拓扑详图
graph TB
subgraph "EPS三相逆变桥"
A[12V/48V辅助电源] --> B[直流母线电容]
B --> C[三相桥输入]
subgraph "上桥臂"
Q_UH["VBGL1806 \n 80V/95A"]
Q_VH["VBGL1806 \n 80V/95A"]
Q_WH["VBGL1806 \n 80V/95A"]
end
subgraph "下桥臂"
Q_UL["VBGL1806 \n 80V/95A"]
Q_VL["VBGL1806 \n 80V/95A"]
Q_WL["VBGL1806 \n 80V/95A"]
end
C --> Q_UH
C --> Q_VH
C --> Q_WH
Q_UH --> D[U相输出]
Q_VH --> E[V相输出]
Q_WH --> F[W相输出]
D --> Q_UL
E --> Q_VL
F --> Q_WL
Q_UL --> G[功率地]
Q_VL --> G
Q_WL --> G
D --> H[EPS三相电机]
E --> H
F --> H
end
subgraph "驱动与保护"
I[MCU PWM输出] --> J[三相预驱动器]
J --> Q_UH
J --> Q_VH
J --> Q_WH
J --> Q_UL
J --> Q_VL
J --> Q_WL
K[电流传感器] --> L[过流检测]
M[温度传感器] --> N[过热保护]
L --> O[故障锁存]
N --> O
O --> P[快速关断]
P --> J
end
subgraph "空调压缩机驱动"
Q[三相逆变桥] --> R[压缩机电机]
end
style Q_UH fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "车身域控制器(BDC)"
A[MCU GPIO] --> B[电平转换电路]
end
subgraph "双P-MOS智能开关通道"
B --> C["VBA4670通道1"]
B --> D["VBA4670通道2"]
subgraph C ["VBA4670内部结构"]
direction LR
IN1[栅极1]
S1[源极1]
D1[漏极1]
BODY1[体二极管1]
end
subgraph D ["VBA4670内部结构"]
direction LR
IN2[栅极2]
S2[源极2]
D2[漏极2]
BODY2[体二极管2]
end
end
subgraph "负载应用示例"
E[12V辅助电源] --> S1
E --> S2
D1 --> F[LED大灯驱动]
D2 --> G[座舱风扇]
F --> H[负载地]
G --> H
I[续流二极管] --> F
J[PWM调光] --> F
K[软启动控制] --> G
end
subgraph "保护功能"
L[TVS保护] --> D1
M[电流检测] --> F
N[温度监控] --> G
O[开路检测] --> D1
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBM19R15S规格书
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