graph LR
subgraph "主电源管理通道"
A[电池正极] --> B[VBC2311漏极]
B --> C["VBC2311 P-MOSFET \n TSSOP8封装"]
C --> D[VBC2311源极]
D --> E[系统电源总线]
F[MCU GPIO] --> G[电平转换]
G --> H[VBC2311栅极]
I[电源管理IC] --> J[使能逻辑]
J --> H
E -->|电压反馈| I
subgraph "保护电路"
K["栅极串联电阻 \n 10-100Ω"]
L["GS间TVS \n 5.6V"]
end
G --> K --> H
H --> L --> D
end
subgraph "电机驱动通道"
E --> M[震动马达]
E --> N[锁舌状态LED]
O[MCU PWM] --> P[驱动电路]
P --> Q["VBC2311栅极2"]
R[VBC2311源极2] --> M
R --> N
S[续流二极管] --> T[RC吸收]
M --> S
N --> S
S --> E
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
射频模块供电拓扑详图
graph TB
subgraph "射频供电动态控制"
A[系统电源总线] --> B[VBQF2207漏极]
B --> C["VBQF2207 P-MOSFET \n DFN8(3x3)封装"]
C --> D[VBQF2207源极]
D --> E[射频PA电源引脚]
F[射频芯片TX_EN] --> G[时序控制逻辑]
G --> H[VBQF2207栅极]
subgraph "多层去耦网络"
I["100pF陶瓷电容 \n 0402封装"]
J["100nF陶瓷电容 \n 0402封装"]
K["10uF聚合物电容 \n 0603封装"]
end
D --> I --> L[射频地平面]
D --> J --> L
D --> K --> L
subgraph "PCB热设计"
M[散热焊盘] --> N[PCB铜层]
N --> O[热过孔阵列]
O --> P[内部接地层]
end
C --> M
end
subgraph "射频功率链路"
E --> Q[功率放大器PA]
Q --> R[匹配网络]
R --> S[天线开关]
S --> T[天线端口]
U[射频控制器] --> V[功率控制]
V --> Q
W[电流检测] --> X[功率校准]
X --> U
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助负载控制拓扑详图
graph LR
subgraph "多通道负载控制"
A[系统电源总线] --> B[负载正极]
subgraph "通道1:震动马达"
C["VB1240B N-MOSFET \n SOT23-3封装"]
D[MCU GPIO1] --> E[栅极驱动]
E --> F[VB1240B栅极]
B --> G[震动马达]
G --> H[VB1240B漏极]
I[VB1240B源极] --> J[系统地]
K[续流二极管] --> L[RC缓冲]
G --> K
K --> B
end
subgraph "通道2:状态指示"
M["VB1240B N-MOSFET"]
N[MCU GPIO2] --> O[VB1240B栅极]
B --> P[LED阵列]
P --> Q[VB1240B漏极]
R[VB1240B源极] --> J
S[限流电阻] --> T[PWM调光]
P --> S
S --> Q
end
subgraph "通道3:背光键盘"
U["VB1240B N-MOSFET"]
V[MCU GPIO3] --> W[VB1240B栅极]
B --> X[键盘背光]
X --> Y[VB1240B漏极]
Z[VB1240B源极] --> J
end
subgraph "栅极保护网络"
AA["串联电阻 \n 22Ω"]
AB["TVS保护 \n 3.6V"]
AC["滤波电容 \n 100pF"]
end
E --> AA --> F
F --> AB --> I
F --> AC --> I
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style M fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style U fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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