graph LR
subgraph "升压型PFC电路"
A[整流后直流] --> B[PFC电感]
B --> C[PFC开关节点]
C --> D["VBM16R41SFD \n 600V/41A"]
D --> E[输出电容]
E --> F[高压直流输出]
G[PFC控制器] --> H[栅极驱动器]
H --> D
F -->|电压反馈| G
I[电流检测] -->|电流反馈| G
end
subgraph "EMI抑制与保护"
J[RC缓冲网络] --> C
K[TVS阵列] --> H
L[输入浪涌保护] --> A
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
D类功放输出级拓扑详图
graph TB
subgraph "H桥输出级"
A[低压直流母线] --> B[上桥臂开关节点]
A --> C[下桥臂开关节点]
subgraph "上桥臂MOSFET"
Q_H1["VBP1601 \n 60V/150A"]
Q_H2["VBP1601 \n 60V/150A"]
end
subgraph "下桥臂MOSFET"
Q_L1["VBP1601 \n 60V/150A"]
Q_L2["VBP1601 \n 60V/150A"]
end
B --> Q_H1
B --> Q_H2
Q_H1 --> D[输出节点A]
Q_H2 --> E[输出节点B]
D --> OUTPUT_FILTER["LC输出滤波器"]
E --> OUTPUT_FILTER
OUTPUT_FILTER --> F[扬声器负载]
C --> Q_L1
C --> Q_L2
Q_L1 --> GND
Q_L2 --> GND
end
subgraph "驱动与保护"
H[D类功放控制器] --> I[半桥驱动器]
I --> Q_H1
I --> Q_L1
J[半桥驱动器] --> Q_H2
J --> Q_L2
K[过流检测] --> L[保护电路]
L --> M[关断信号]
M --> I
M --> J
N[死区控制] --> I
N --> J
end
style Q_H1 fill:#ffebee,stroke:#f44336,stroke-width:2px
style Q_L1 fill:#ffebee,stroke:#f44336,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "双路P-MOS负载开关"
A[MCU GPIO] --> B[电平转换电路]
B --> C["VBA4235 \n 通道1栅极"]
B --> D["VBA4235 \n 通道2栅极"]
E[12V辅助电源] --> F[VBA4235漏极1]
E --> G[VBA4235漏极2]
H[VBA4235源极1] --> I[负载1:散热风扇]
J[VBA4235源极2] --> K[负载2:指示灯]
I --> L[地]
K --> L
end
subgraph "保护电路"
M[RC滤波] --> C
N[RC滤波] --> D
O[TVS保护] --> H
P[TVS保护] --> J
Q[续流二极管] --> I
end
subgraph "控制逻辑"
R[温度传感器] --> S[MCU]
S --> T[智能控制逻辑]
T --> A
U[工作模式检测] --> T
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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