graph TB
subgraph "三相全桥电机驱动电路"
A["高压直流母线"] --> B["预充电电路"]
B --> C["直流母线电容"]
C --> D["U相上桥臂"]
C --> E["V相上桥臂"]
C --> F["W相上桥臂"]
subgraph "下桥臂MOSFET阵列"
G["VBL1401 \n 下桥臂U"]
H["VBL1401 \n 下桥臂V"]
I["VBL1401 \n 下桥臂W"]
end
D --> J["U相输出"]
E --> K["V相输出"]
F --> L["W相输出"]
G --> M["功率地"]
H --> M
I --> M
J --> N["三相电机"]
K --> N
L --> N
end
subgraph "栅极驱动与保护电路"
O["电机控制器"] --> P["专用栅极驱动IC"]
P --> Q["负压关断电路"]
Q --> D
Q --> E
Q --> F
Q --> G
Q --> H
Q --> I
subgraph "电流检测与保护"
R["三相电流采样"]
S["过流比较器"]
T["故障锁存"]
end
R --> S
S --> T
T --> U["驱动关断信号"]
U --> P
subgraph "温度监控"
V["NTC温度传感器"]
W["过温保护电路"]
end
V --> W
W --> U
end
subgraph "PCB布局与散热"
X["大面积功率铜层"] --> G
X --> H
X --> I
Y["散热器安装面"] --> D
Y --> E
Y --> F
Z["散热过孔阵列"] --> X
end
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
高精度阀门控制拓扑详图
graph LR
subgraph "高侧阀门开关控制"
A["24V直流电源"] --> B["输入滤波"]
B --> C["VBN2625 \n P沟道MOSFET"]
C --> D["阀门负载"]
D --> E["系统地"]
F["PLC输出"] --> G["电平转换电路"]
G --> H["栅极驱动器 \n (带米勒钳位)"]
H --> C
end
subgraph "感性负载保护网络"
subgraph "电压尖峰抑制"
I["RC吸收电路 \n 就近并联"]
J["续流二极管 \n 快速恢复型"]
K["TVS阵列 \n 双向保护"]
end
C --> I
C --> J
D --> J
C --> K
end
subgraph "多阀门同步控制"
L["主控制器"] --> M["多路PWM输出"]
M --> N["阀门组1"]
M --> O["阀门组2"]
M --> P["阀门组3"]
subgraph "独立驱动通道"
Q1["VBN2625 \n 通道1"]
Q2["VBN2625 \n 通道2"]
Q3["VBN2625 \n 通道3"]
end
N --> Q1
O --> Q2
P --> Q3
Q1 --> R["电磁阀阵列"]
Q2 --> S["电动调节阀"]
Q3 --> T["气动执行器"]
end
subgraph "反馈与诊断"
U["阀门位置传感器"] --> V["信号调理"]
V --> W["ADC输入"]
X["电流监测"] --> Y["故障诊断"]
Y --> Z["报警输出"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助电源管理与传感器网络拓扑详图
graph TB
subgraph "多路智能负载开关"
A["24V辅助电源"] --> B["输入保护"]
B --> C["VBA4670 \n 双路P-MOSFET"]
subgraph C ["VBA4670内部结构"]
direction LR
CH1_GATE["通道1栅极"]
CH1_SOURCE["通道1源极"]
CH1_DRAIN["通道1漏极"]
CH2_GATE["通道2栅极"]
CH2_SOURCE["通道2源极"]
CH2_DRAIN["通道2漏极"]
end
CH1_DRAIN --> D["负载1供电"]
CH2_DRAIN --> E["负载2供电"]
F["MCU GPIO1"] --> G["上拉电阻"]
F --> H["RC滤波网络"]
H --> CH1_GATE
I["MCU GPIO2"] --> J["上拉电阻"]
I --> K["RC滤波网络"]
K --> CH2_GATE
end
subgraph "传感器供电分组"
subgraph "流量与压力传感器组"
L["流量传感器"]
M["压力传感器"]
N["信号变送器"]
end
D --> L
D --> M
D --> N
subgraph "温度与液位传感器组"
O["温度传感器"]
P["液位传感器"]
Q["接口模块"]
end
E --> O
E --> P
E --> Q
end
subgraph "信号调理与隔离"
R["传感器信号"] --> S["仪表放大器"]
S --> T["低通滤波器"]
T --> U["隔离电路"]
U --> V["PLC模拟输入"]
subgraph "抗干扰设计"
W["屏蔽电缆"]
X["接地环路抑制"]
Y["共模滤波"]
end
R --> W
W --> X
X --> Y
Y --> S
end
subgraph "电源时序管理"
Z["上电序列控制"] --> AA["时序控制器"]
AA --> AB["第一组上电"]
AA --> AC["第二组延时上电"]
AA --> AD["第三组上电"]
AB --> CH1_GATE
AC --> CH2_GATE
AD --> AE["第三开关通道"]
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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