graph LR
subgraph "主电源路径管理"
A[锂电池输入] --> B[保护IC]
B --> C[VBK7322栅极]
C --> D["VBK7322 \n N-MOSFET"]
D --> E[系统电源总线]
F[MCU GPIO] --> G[电平转换]
G --> C
E --> H[LDO/DC-DC]
H --> I[3.3V/5V核心电源]
end
subgraph "双路负载开关控制"
I --> J[VBC6P3033源极]
J --> K["VBC6P3033 \n 双P-MOSFET"]
subgraph K["内部结构"]
direction LR
P1[P-MOS1]
P2[P-MOS2]
end
K --> L[负载1电源]
K --> M[负载2电源]
L --> N[RF模块]
M --> O[传感器]
P[MCU控制] --> Q[驱动电路]
Q --> R[P-MOS1栅极]
Q --> S[P-MOS2栅极]
R --> P1
S --> P2
end
subgraph "振动马达驱动"
I --> T[VBK7322栅极]
T --> U["VBK7322 \n 马达驱动"]
U --> V[振动马达+]
V --> W[振动马达-]
W --> X[地]
Y[MCU PWM] --> T
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style K fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style U fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
微型电机H桥驱动拓扑详图
graph TB
subgraph "H桥驱动拓扑"
VCC[电机电源] --> Q1_H["高边N-MOS1"]
VCC --> Q3_H["高边N-MOS2"]
subgraph "半桥模块1"
Q1_H["VBQF3316G \n 高边N-MOS"]
Q2_L["VBQF3316G \n 低边N-MOS"]
end
subgraph "半桥模块2"
Q3_H["VBQF3316G \n 高边N-MOS"]
Q4_L["VBQF3316G \n 低边N-MOS"]
end
Q1_H --> A[电机A端]
Q2_L --> A
Q3_H --> B[电机B端]
Q4_L --> B
A --> MOTOR[微型直流电机]
B --> MOTOR
Q2_L --> GND1[地]
Q4_L --> GND2[地]
end
subgraph "驱动控制电路"
MCU[主控MCU] --> DRIVER_IC[H桥驱动IC]
subgraph "自举电路"
BS_CAP1[自举电容1]
BS_DIODE1[自举二极管1]
BS_CAP2[自举电容2]
BS_DIODE2[自举二极管2]
end
DRIVER_IC --> Q1_G[高边1栅极]
DRIVER_IC --> Q2_G[低边1栅极]
DRIVER_IC --> Q3_G[高边2栅极]
DRIVER_IC --> Q4_G[低边2栅极]
Q1_G --> Q1_H
Q2_G --> Q2_L
Q3_G --> Q3_H
Q4_G --> Q4_L
BS_CAP1 --> Q1_G
BS_CAP2 --> Q3_G
end
subgraph "保护电路"
CS_RES[电流采样电阻] --> MOTOR
CS_RES --> CS_AMP[电流放大器]
CS_AMP --> COMP[比较器]
COMP --> OCP_TRIP[过流触发]
OCP_TRIP --> DRIVER_IC
TVS1[TVS管] --> A
TVS2[TVS管] --> B
RC_SNUBBER[RC吸收网络] --> A
RC_SNUBBER --> B
end
style Q1_H fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q2_L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q3_H fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q4_L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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