graph LR
subgraph "高压加热器驱动拓扑"
A["整流后高压DC \n 300-400V"] --> B["主开关节点"]
B --> C["VBMB18R09S \n 800V/9A \n TO-220F"]
C --> D["加热负载 \n (加热棒)"]
D --> E["电流检测 \n 电阻"]
E --> F["接地"]
G["PID温度控制器"] --> H["隔离栅极驱动器"]
H --> C
I["NTC温度传感器"] --> G
subgraph "保护电路"
J["RCD缓冲网络"]
K["压敏电阻 \n 浪涌保护"]
L["保险丝 \n 过流保护"]
end
J --> B
K --> B
L --> A
end
style C fill:#ffebee,stroke:#f44336,stroke-width:2px
高效泵电机驱动拓扑详图
graph TB
subgraph "H桥电机驱动拓扑"
A["12-24V辅助电源"] --> B["电源滤波"]
B --> C["VBGQA1603 \n Q1 (高侧)"]
B --> D["VBGQA1603 \n Q2 (高侧)"]
C --> E["电机正端"]
D --> F["电机负端"]
G["VBGQA1603 \n Q3 (低侧)"] --> H["接地"]
I["VBGQA1603 \n Q4 (低侧)"] --> H
E --> J["直流电机"]
F --> J
K["电机驱动器IC"] --> L["高侧驱动"]
K --> M["低侧驱动"]
L --> C
L --> D
M --> G
M --> I
subgraph "PCB热设计"
N["多层PCB \n 2oz铜厚"]
O["过孔阵列 \n 热传导"]
P["大面积露铜 \n 散热焊盘"]
end
N --> C
O --> C
P --> C
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能电源管理拓扑详图
graph LR
subgraph "智能电源分配管理"
A["主控MCU \n GPIO控制"] --> B["电平转换电路"]
B --> C["VB2658 \n P-MOSFET \n SOT23-3"]
D["12V辅助电源"] --> E["负载电源节点"]
C --> F["控制逻辑"]
subgraph "多路负载通道"
G["通道1:控制板电源"]
H["通道2:散热风扇"]
I["通道3:传感器阵列"]
J["通道4:待机电路"]
end
F --> G
F --> H
F --> I
F --> J
G --> K["控制板MCU \n 及外围"]
H --> L["风扇电机 \n PWM控制"]
I --> M["温度/流量 \n 传感器"]
J --> N["低功耗待机 \n 唤醒电路"]
end
subgraph "保护与监控"
O["过流检测"] --> P["比较器"]
Q["温度监控"] --> R["ADC采样"]
P --> S["故障锁存"]
S --> T["紧急关断"]
T --> C
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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