graph LR
subgraph "大功率加热控制链路"
A["直流母线 \n 48-72VDC"] --> B["低ESR薄膜电容 \n 退耦网络"]
B --> C["VBL7402主开关 \n 40V/200A/1mΩ"]
C --> D["辅助电加热器 \n 大电流负载"]
D --> E["高精度分流器 \n 电流检测"]
E --> F["电流检测放大器"]
F --> G["加热控制器 \n DSP/MCU"]
G --> H["大电流栅极驱动器"]
H --> C
subgraph "保护与缓冲"
I["RCD缓冲网络"] --> C
J["栅极稳压管保护"] --> H
K["过温检测NTC"] --> G
end
G --> L["PWM输出 \n 高分辨率"]
L --> M["温度闭环控制"]
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
冷却风机驱动拓扑详图
graph TB
subgraph "智能冷却风机驱动"
A["风机控制器"] --> B["三相PWM生成"]
B --> C["栅极驱动器阵列"]
subgraph "三相桥臂拓扑"
direction LR
D["VBGMB1121N \n 上桥1"]
E["VBGMB1121N \n 上桥2"]
F["VBGMB1121N \n 上桥3"]
G["VBGMB1121N \n 下桥1"]
H["VBGMB1121N \n 下桥2"]
I["VBGMB1121N \n 下桥3"]
end
C --> D
C --> E
C --> F
C --> G
C --> H
C --> I
D --> J["U相输出"]
E --> K["V相输出"]
F --> L["W相输出"]
G --> M["直流负端"]
H --> M
I --> M
J --> N["冷却风机 \n 三相电机"]
K --> N
L --> N
subgraph "保护电路"
O["RC吸收网络"] --> D
P["电机反电动势 \n 钳位"] --> J
Q["过流检测"] --> A
end
A --> R["温度模型 \n 联动控制"]
R --> S["动态风量调节"]
end
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
安全冗余控制拓扑详图
graph LR
subgraph "传感器供电管理通道"
A["隔离IO模块"] --> B["VB4290A通道1 \n 双P-MOS"]
A --> C["VB4290A通道2 \n 双P-MOS"]
A --> D["VB4290A通道3 \n 双P-MOS"]
B --> E["热电偶阵列 \n 供电路径"]
C --> F["压力变送器 \n 供电路径"]
D --> G["流量传感器 \n 供电路径"]
E --> H["传感器信号 \n 至PLC"]
F --> H
G --> H
subgraph "紧急关断与安全互锁"
I["安全继电器 \n 常闭触点"] --> J["VB4290A安全开关"]
J --> K["加热器使能信号"]
J --> L["风机使能信号"]
K --> M["主功率驱动器 \n 使能端"]
L --> M
N["超温检测"] --> I
O["压力异常"] --> I
P["流量异常"] --> I
end
subgraph "故障隔离机制"
Q["通道1故障"] --> R["仅隔离通道1"]
S["通道2故障"] --> T["仅隔离通道2"]
U["通道3故障"] --> V["仅隔离通道3"]
end
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
分层热管理拓扑详图
graph TB
subgraph "三级热管理架构"
A["一级热源 \n VBL7402"] --> B["强制风冷/水冷 \n 大尺寸散热器"]
C["二级热源 \n VBGMB1121N阵列"] --> D["强制风冷 \n 型材散热器"]
E["三级热源 \n 控制电路"] --> F["PCB敷铜散热 \n 环境通风"]
subgraph "温度监控网络"
G["加热器NTC \n 直接测温"] --> H["PLC温度采集"]
I["散热器热电偶"] --> H
J["环境温度传感器"] --> H
K["风机出风温度"] --> H
end
H --> L["智能热管理算法"]
L --> M["风机PWM调速控制"]
L --> N["液冷泵流速控制"]
L --> O["功率降额策略"]
subgraph "散热路径优化"
P["VBL7402散热器"] --> Q["系统主风道"]
R["VBGMB1121N散热器"] --> S["冷却风机气流"]
T["控制板区域"] --> U["低温区布局"]
end
end
style A fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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