graph LR
subgraph "图腾柱PFC拓扑"
A[三相380VAC输入] --> B[EMI滤波器]
B --> C[无桥PFC电路]
subgraph "高压MOSFET桥臂"
Q1["VBM16R32S \n 上管"]
Q2["VBM16R32S \n 下管"]
Q3["VBM16R32S \n 上管"]
Q4["VBM16R32S \n 下管"]
end
C --> Q1
C --> Q2
C --> Q3
C --> Q4
Q1 --> D[PFC电感]
Q2 --> E[PFC电感]
D --> F[高压直流母线]
E --> F
G[PFC控制器] --> H[隔离驱动器]
H --> Q1
H --> Q2
H --> Q3
H --> Q4
F -->|电压反馈| G
end
subgraph "保护电路"
I[去饱和检测] --> J[比较器]
K[电流检测] --> L[过流保护]
M[电压检测] --> N[过压保护]
J --> O[故障锁存]
L --> O
N --> O
O --> P[关断信号]
P --> Q1
P --> Q2
end
subgraph "缓冲与吸收"
Q[RCD缓冲] --> Q1
R[RC吸收] --> Q2
S[TVS阵列] --> H
end
style Q1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q2 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
中压多相DC/DC转换拓扑
graph TB
subgraph "多相降压转换器"
A[48V输入总线] --> B[输入电容]
B --> C[相位1]
B --> D[相位2]
B --> E[相位3]
B --> F[相位4]
subgraph "相位1功率级"
G1["VBQA1102N \n 上管"]
H1["VBQA1102N \n 下管"]
C --> G1
C --> H1
G1 --> I1[功率电感]
H1 --> J1[地]
I1 --> K[输出电容]
end
subgraph "相位2功率级"
G2["VBQA1102N \n 上管"]
H2["VBQA1102N \n 下管"]
D --> G2
D --> H2
G2 --> I2[功率电感]
H2 --> J2[地]
I2 --> K
end
K --> L[12V输出总线]
subgraph "多相控制器"
M[PWM控制器] --> N[自适应死区控制]
N --> O[驱动器]
O --> G1
O --> H1
O --> G2
O --> H2
P[电流均衡] --> M
Q[温度监控] --> M
end
end
subgraph "PCB散热设计"
R[散热过孔阵列] --> G1
R --> G2
S[内层铜箔] --> H1
S --> H2
T[散热基板] --> R
T --> S
end
style G1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style H1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
低压大电流负载点开关拓扑
graph LR
subgraph "智能负载开关通道"
A[12V输入] --> B[输入滤波]
B --> C[开关节点]
subgraph "大电流MOSFET"
D["VBFB1303 \n 主开关"]
end
C --> D
D --> E[输出滤波]
E --> F[负载点输出]
subgraph "驱动与保护"
G[MCU GPIO] --> H[电平转换]
H --> I[驱动器]
I --> D
J[电流检测] --> K[比较器]
K --> L[故障锁存]
M[温度检测] --> N[过温保护]
L --> O[快速关断]
N --> O
O --> I
end
subgraph "热插拔控制"
P[热插拔检测] --> Q[缓启动]
Q --> I
R[电源序列] --> G
end
end
subgraph "散热与布局"
S[铜排连接] --> D
T[散热片] --> D
U[厚铜PCB] --> D
V[对称布局] --> D
end
subgraph "负载类型"
F --> W[CPU核心供电]
F --> X[GPU卡供电]
F --> Y[存储模块]
F --> Z[加速卡]
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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