graph LR
subgraph "水泵驱动电路"
A[MCU PWM信号] --> B[栅极驱动器]
B --> C["VBQF1306 \n N-MOSFET \n 30V/40A"]
D[12V/24V电源] --> E[输入滤波]
E --> F[续流二极管]
F --> C
C --> G[水泵电机]
G --> H[电流检测电阻]
H --> I[地]
I --> J[RC吸收电路]
J --> C
end
subgraph "加热器驱动电路"
K[MCU PWM信号] --> L[栅极驱动器]
L --> M["VBQF1306 \n N-MOSFET \n 30V/40A"]
N[12V/24V电源] --> O[输入滤波]
O --> P[续流二极管]
P --> M
M --> Q[加热元件]
Q --> R[电流检测电阻]
R --> S[地]
S --> T[RC吸收电路]
T --> M
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
通用负载与高侧管理拓扑详图
graph TB
subgraph "通用负载开关电路"
A["MCU GPIO \n 3.3V/5V"] --> B["VB1630 \n N-MOSFET \n 60V/4.5A"]
C[12V/24V总线] --> D[限流电阻]
D --> B
B --> E[负载(风机/电磁阀)]
E --> F[地]
G[续流二极管] --> B
end
subgraph "高侧P-MOS驱动电路"
H["MCU GPIO \n 低电平有效"] --> I[电平转换N-MOS]
I --> J["VBI8322 \n P-MOSFET \n -30V/-6.1A"]
K[12V/24V总线] --> J
J --> L[座圈加热负载]
L --> M[地]
N[下拉电阻] --> J
end
subgraph "保护电路设计"
O[负载电流] --> P[采样电阻]
P --> Q[比较器]
Q --> R[故障信号]
R --> S[关断驱动]
S --> B
S --> J
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style J fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与环境防护拓扑详图
graph LR
subgraph "三级热管理系统"
A["一级: PCB大面积敷铜"] --> B["VBQF1306 \n 大电流MOSFET"]
C["二级: PCB敷铜散热"] --> D["VB1630阵列 \n 通用开关"]
E["三级: 自然散热"] --> F["控制IC与 \n 无源元件"]
G[温度传感器] --> H[MCU]
H --> I[负载功率管理]
I --> J[动态降频]
J --> B
end
subgraph "潮湿环境防护"
K[三防漆涂层] --> L[所有功率器件]
M[密封灌封胶] --> N[关键电路区域]
O[防水透气膜] --> P[散热开口]
end
subgraph "EMI抑制设计"
Q[RC缓冲电路] --> R[感性负载端口]
S[TVS保护管] --> T[电源输入接口]
U[共模电感] --> V[通信线路]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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