graph LR
subgraph "PFC升压级"
A[市电输入] --> B[EMI滤波器]
B --> C[整流桥]
C --> D[PFC电感]
D --> E[PFC开关节点]
E --> F["VBP16R20SE \n 600V/20A/TO-247"]
F --> G[800VDC母线]
H[PFC控制器] --> I[栅极驱动器]
I --> F
G -->|电压反馈| H
end
subgraph "三相逆变桥"
G --> J[直流母线电容]
J --> K[三相逆变桥臂]
subgraph "U相桥臂"
Q_UH["VBGL1103 \n 上管"]
Q_UL["VBGL1103 \n 下管"]
end
subgraph "V相桥臂"
Q_VH["VBGL1103 \n 上管"]
Q_VL["VBGL1103 \n 下管"]
end
subgraph "W相桥臂"
Q_WH["VBGL1103 \n 上管"]
Q_WL["VBGL1103 \n 下管"]
end
K --> L[输出滤波器]
L --> M[交流输出]
N[逆变控制器] --> O[三路栅极驱动器]
O --> Q_UH
O --> Q_UL
O --> Q_VH
O --> Q_VL
O --> Q_WH
O --> Q_WL
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q_UH fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
电池管理与切换拓扑详图
graph TB
subgraph "双向DC-DC电池管理"
A[48V蓄电池] --> B[电池开关节点]
B --> C["VBQA5325 \n 充电控制"]
B --> D["VBQA5325 \n 放电控制"]
C --> E[Buck变换器]
D --> F[Boost变换器]
E --> G[800VDC母线]
F --> G
H[BMS控制器] --> I[双路驱动器]
I --> C
I --> D
end
subgraph "静态切换开关(STS)"
J[市电旁路输入] --> K[STS开关节点]
L[逆变器输出] --> K
subgraph "双路切换开关"
M["VBQA5325 \n N通道"]
N["VBQA5325 \n P通道"]
end
K --> M
K --> N
M --> O[负载输出]
N --> O
P[切换控制器] --> Q[互补驱动器]
Q --> M
Q --> N
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style M 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: 强制风冷"] --> B["PFC MOSFET"]
C["二级: 风冷散热片"] --> D["逆变MOSFET"]
E["三级: PCB敷铜"] --> F["控制IC"]
G[温度传感器阵列] --> H[MCU]
H --> I[风扇PWM控制]
H --> J[过温保护]
I --> K[冷却风扇]
J --> L[降额或关机]
end
subgraph "多重保护网络"
M["RCD缓冲电路"] --> N["PFC开关管"]
O["RC吸收电路"] --> P["逆变桥臂"]
Q["TVS阵列"] --> R["栅极驱动芯片"]
S["直流母线保护"] --> T["过压/欠压比较器"]
U["输出电流检测"] --> V["过流比较器"]
T --> W[故障锁存器]
V --> W
W --> X[全局关断信号]
X --> N
X --> P
end
subgraph "EMI滤波设计"
Y[输入端子] --> Z[π型滤波器]
Z --> AA[共模电感]
AA --> AB[差模电容]
AB --> AC[整流桥]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style N fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
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