graph LR
subgraph "主动式Boost PFC拓扑"
A["AC输入 \n 85-265VAC"] --> B["EMI滤波器"]
B --> C["全桥整流"]
C --> D["PFC电感"]
D --> E["PFC开关节点"]
E --> F["VBL165R20SE \n 主开关管"]
F --> G["高压直流母线 \n 400VDC"]
G --> H["快恢复二极管"]
H --> I["高压滤波电容"]
I --> J["初级侧地"]
K["PFC控制器"] --> L["栅极驱动器"]
L --> F
M["输入电压检测"] --> K
N["母线电压反馈"] --> K
O["电感电流检测"] --> K
end
subgraph "PFC级保护电路"
P["RCD缓冲网络"] --> F
Q["TVS保护"] --> L
R["过压保护"] --> K
S["过流保护"] --> K
T["过温保护"] --> K
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
BLDC电机驱动拓扑详图
graph TB
subgraph "三相逆变桥拓扑"
A["逆变器母线 \n 12-24VDC"] --> B["上桥臂U相"]
A --> C["上桥臂V相"]
A --> D["上桥臂W相"]
B --> E["VBGQT1401 \n U相上管"]
C --> F["VBGQT1401 \n V相上管"]
D --> G["VBGQT1401 \n W相上管"]
E --> H["电机U相"]
F --> I["电机V相"]
G --> J["电机W相"]
H --> K["VBGQT1401 \n U相下管"]
I --> L["VBGQT1401 \n V相下管"]
J --> M["VBGQT1401 \n W相下管"]
K --> N["驱动地"]
L --> N
M --> N
end
subgraph "FOC控制环路"
O["MCU/专用控制器"] --> P["FOC算法"]
P --> Q["SVPWM生成"]
Q --> R["栅极驱动器"]
R --> E
R --> K
R --> F
R --> L
R --> G
R --> M
S["三相电流检测"] --> P
T["电机位置传感器"] --> P
U["速度/转矩指令"] --> P
end
subgraph "保护与监控"
V["过流保护"] --> R
W["欠压锁定"] --> R
X["短路保护"] --> R
Y["温度传感器"] --> O
Z["电流限制"] --> O
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "VBA3211双通道负载开关"
A["MCU GPIO1"] --> B["电平转换"]
B --> C["VBA3211_1 \n 通道1栅极"]
D["MCU GPIO2"] --> E["电平转换"]
E --> F["VBA3211_1 \n 通道2栅极"]
subgraph "VBA3211内部结构"
direction LR
G["漏极1(D1)"]
H["漏极2(D2)"]
I["源极1(S1)"]
J["源极2(S2)"]
end
K["12V辅助电源"] --> G
K --> H
I --> L["负载1: 传感器阵列"]
J --> M["负载2: 辅助风机"]
L --> N["地"]
M --> N
end
subgraph "多路负载扩展"
O["VBA3211_2通道1"] --> P["UV杀菌灯"]
Q["VBA3211_2通道2"] --> R["OLED显示屏"]
S["VBA3211_3通道1"] --> T["负离子发生器"]
U["VBA3211_3通道2"] --> V["状态指示灯"]
end
subgraph "负载保护电路"
W["续流二极管"] --> L
X["RC缓冲"] --> P
Y["TVS保护"] --> R
Z["过流检测"] --> MCU
end
subgraph "时序管理逻辑"
MCU_TIMING["MCU时序控制器"] --> SEQ1["上电序列"]
MCU_TIMING --> SEQ2["关机序列"]
MCU_TIMING --> SEQ3["模式切换"]
SEQ1 --> PRIORITY["优先级管理"]
SEQ2 --> SAFETY["安全互锁"]
SEQ3 --> POWER_SAVE["节能管理"]
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBA3211规格书
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