graph LR
subgraph "气泵驱动电路"
A["12V电源输入"] --> B["电机驱动IC \n DRV8837"]
B --> C["栅极驱动信号 \n PWM控制"]
C --> D["VBQG1317 \n N-MOSFET \n 30V/10A"]
D --> E["直流气泵电机 \n (感性负载)"]
E --> F["GND"]
G["MCU PWM"] --> H["驱动配置电阻"]
H --> B
subgraph "保护网络"
I["RC吸收电路 \n 10Ω+100nF"]
J["TVS保护 \n SMAJ12A"]
K["电流采样电阻"]
end
D --> I
D --> J
E --> K
K --> B
end
subgraph "PCB热设计"
L["DFN6(2x2)封装"] --> M["底部散热焊盘"]
M --> N[">9mm²敷铜区域"]
N --> O["散热过孔阵列"]
O --> P["内层接地层"]
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电源路径管理拓扑详图
graph TB
subgraph "双输入电源管理"
A["AC/DC适配器 \n 5V-12V"] --> B["π型滤波器 \n LC电路"]
B --> C["VB3102M-1 \n 主通路开关 \n N-MOS1"]
D["USB 5V输入"] --> E["VB3102M-2 \n USB通路开关 \n N-MOS2"]
C --> F["电源选择逻辑"]
E --> F
F --> G["系统电源母线"]
subgraph "输入保护"
H["TVS阵列 \n SMAJ5.0A"]
I["压敏电阻 \n 14D系列"]
J["共模电感"]
end
A --> H
A --> I
A --> J
end
subgraph "电平转换驱动"
K["MCU GPIO \n 3.3V"] --> L["电平转换电路"]
L --> M["栅极驱动信号 \n 10-12V"]
M --> C
M --> E
N["电荷泵电路"] --> M
end
subgraph "待机功耗优化"
O["使能控制"] --> P["微安级待机"]
P --> Q["自动休眠"]
Q --> R["快速唤醒"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
阀门控制与保护拓扑详图
graph LR
subgraph "电磁阀驱动电路"
A["MCU GPIO \n 3.3V逻辑"] --> B["栅极电阻 \n 22-100Ω"]
B --> C["VB1330 \n N-MOSFET \n 30V/6.5A"]
C --> D["电磁阀线圈 \n 感性负载"]
D --> E["GND"]
F["12V电源"] --> D
subgraph "感性负载保护"
G["肖特基二极管 \n B340A"]
H["RC吸收网络 \n 47Ω+10nF"]
I["TVS保护 \n SMAJ5.0A"]
end
C --> G
G --> D
C --> H
C --> I
end
subgraph "快速响应控制"
J["压力传感器反馈"] --> K["PID控制算法"]
K --> L["PWM占空比调节"]
L --> A
M["毫秒级响应"] --> N["精准压力保持"]
N --> O["阶段放气控制"]
end
subgraph "SOT23-3布局"
P["小型封装"] --> Q["紧凑布局"]
Q --> R["气路板周边"]
R --> S["热管理优化"]
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBQD4290AU规格书
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