graph LR
subgraph "24V直流输入与驱动控制"
A["24V工业总线"] --> B["输入滤波 \n 与保护"]
B --> C["预驱动控制器"]
C --> D["栅极驱动器"]
end
subgraph "H桥功率级（VBQF1405阵列）"
E["VBQF1405 \n 上桥臂Q1"] --> F["调节阀线圈+"]
G["VBQF1405 \n 下桥臂Q2"] --> H["调节阀线圈-"]
I["VBQF1405 \n 上桥臂Q3"]
J["VBQF1405 \n 下桥臂Q4"]
D --> E
D --> G
D --> I
D --> J
F --> K["电动调节阀 \n 比例阀/开关阀"]
H --> K
end
subgraph "保护与续流电路"
K --> L["续流二极管D1"]
K --> M["续流二极管D2"]
N["RC吸收网络"] --> E
N --> G
O["电流检测"] --> P["过流保护"]
P --> Q["故障信号"]
Q --> C
end
subgraph "热管理与监控"
R["散热器/PCB敷铜"] --> E
R --> G
S["温度传感器"] --> T["MCU监控"]
T --> U["PWM调节"]
U --> C
end
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style J fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
本地低压电源管理拓扑详图（场景2）
graph TB
subgraph "MCU控制与电平转换"
A["主控MCU \n 3.3V GPIO"] --> B["电平转换电路"]
B --> C["驱动信号 \n 0-12V"]
end
subgraph "VBKB2220电源开关阵列"
C --> D["VBKB2220 \n 通道1"]
C --> E["VBKB2220 \n 通道2"]
C --> F["VBKB2220 \n 通道3"]
C --> G["VBKB2220 \n 通道4"]
end
subgraph "负载分配与管理"
H["12V辅助电源"] --> D
H --> E
H --> F
H --> G
D --> I["温度变送器 \n 4-20mA"]
E --> J["压力变送器 \n 4-20mA"]
F --> K["通信模块 \n RS485/LoRa"]
G --> L["人机界面 \n 显示单元"]
I --> M["系统地"]
J --> M
K --> M
L --> M
end
subgraph "保护与状态监控"
N["栅极下拉电阻"] --> D
O["电流检测电阻"] --> I
P["状态反馈"] --> A
Q["热管理"] --> D
Q --> E
R["过温保护"] --> A
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style G fill:#fff3e0,stroke:#ff9800,stroke-width:2px
高压侧隔离控制拓扑详图（场景3）
graph LR
subgraph "低压控制侧"
A["MCU控制信号"] --> B["隔离驱动IC"]
B --> C["光耦隔离器"]
end
subgraph "高压侧功率控制（VB1201K阵列）"
D["高压电源 \n 100-200VDC"] --> E["VB1201K \n 开关管Q1"]
D --> F["VB1201K \n 开关管Q2"]
C --> G["栅极驱动电阻"]
G --> E
G --> F
end
subgraph "高压侧应用电路"
E --> H["隔离继电器线圈"]
F --> I["高压检测回路"]
E --> J["安全联锁输入"]
H --> K["高压负载"]
I --> L["电压分压检测"]
J --> M["互锁信号输出"]
K --> N["高压地"]
L --> O["ADC输入"]
M --> P["安全控制器"]
end
subgraph "保护与隔离"
Q["TVS保护阵列"] --> E
Q --> F
R["栅极-源极电阻"] --> E
R --> F
S["爬电距离控制"] --> E
S --> F
T["隔离电源 \n DC-DC"] --> B
T --> C
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
热管理与保护电路拓扑详图
graph TB
subgraph "分级热管理策略"
A["一级散热: PCB敷铜"] --> B["VBQF1405(DFN8)"]
C["二级散热: 小型散热片"] --> D["VBKB2220(SC70-8)"]
E["三级散热: 自然对流"] --> F["VB1201K(SOT23-3)"]
end
subgraph "温度监测网络"
G["NTC温度传感器1"] --> H["阀门驱动板"]
I["NTC温度传感器2"] --> J["电源管理板"]
K["NTC温度传感器3"] --> L["高压隔离板"]
H --> M["MCU温度采集"]
J --> M
L --> M
end
subgraph "主动散热控制"
M --> N["PWM控制算法"]
N --> O["冷却风扇控制"]
N --> P["通风系统控制"]
O --> Q["机柜散热风扇"]
P --> R["风道调节阀"]
end
subgraph "电气保护网络"
S["自恢复保险丝"] --> B
T["TVS管阵列"] --> F
U["RC吸收电路"] --> B
V["肖特基二极管"] --> B
W["过流比较器"] --> X["故障锁存"]
X --> Y["全局关断信号"]
Y --> B
Y --> D
Y --> F
end
subgraph "降额设计策略"
Z["环境温度监测"] --> AA["降额曲线计算"]
AA --> AB["VBQF1405电流降额"]
AA --> AC["VBKB2220电流降额"]
AA --> AD["VB1201K电流降额"]
AB --> B
AC --> D
AD --> F
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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