graph LR
subgraph "高侧P-MOS驱动电路"
A[MCU GPIO] --> B[电平转换器]
B --> C["VBQF2120 \n 栅极驱动"]
C --> D["VBQF2120 \n P-MOSFET \n DFN8(3x3)"]
E[主电源12V] --> F[电源滤波]
F --> D
D --> G[电机正极]
G --> H[电磁锁线圈]
H --> I[电机地]
end
subgraph "保护与吸收网络"
J[RC吸收电路] --> G
K[TVS管] --> G
L[续流二极管] --> H
M[电流检测] --> H
M --> N[过流保护]
N --> O[故障信号]
O --> P[MCU]
end
subgraph "热管理设计"
Q[PCB功率敷铜区] --> D
R[散热片] --> D
S[温度传感器] --> T[热监控]
T --> U[降额控制]
U --> P
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电源路径管理拓扑详图
graph TB
subgraph "双电源自动切换(ORing)"
A[适配器输入] --> B["VB1317 \n SOT23-3"]
C[电池输入] --> D["VB1317 \n SOT23-3"]
B --> E[公共输出节点]
D --> E
E --> F[主电源总线]
G[ORing控制器] --> B
G --> D
end
subgraph "分区配电控制"
F --> H["VB1317 \n 主开关"]
H --> I[子系统1]
H --> J[子系统2]
H --> K[子系统3]
L[MCU] --> M[GPIO控制]
M --> H
end
subgraph "保护电路"
N[TVS阵列] --> F
O[自恢复保险丝] --> I
O --> J
O --> K
P[过压保护] --> Q[关断控制]
Q --> H
end
subgraph "热设计"
R[PCB敷铜散热] --> B
R --> D
S[环境监测] --> T[温度补偿]
T --> L
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助模块控制拓扑详图
graph LR
subgraph "双N-MOS集成控制"
A[子系统电源] --> B["VBBD3222 \n DFN8(3x2)-B"]
subgraph B ["VBBD3222内部结构"]
direction TB
CH1_GATE[栅极1]
CH2_GATE[栅极2]
CH1_SOURCE[源极1]
CH2_SOURCE[源极2]
CH1_DRAIN[漏极1]
CH2_DRAIN[漏极2]
end
CH1_DRAIN --> C[负载1电源]
CH2_DRAIN --> D[负载2电源]
C --> E[LED照明]
D --> F[散热风扇]
E --> G[地]
F --> G
end
subgraph "MCU控制接口"
H[MCU GPIO1] --> I[驱动电路]
H --> CH1_GATE
J[MCU GPIO2] --> K[驱动电路]
J --> CH2_GATE
end
subgraph "PWM控制与调光"
L[MCU PWM1] --> M[调光电路]
M --> CH1_GATE
N[MCU PWM2] --> O[调速电路]
O --> CH2_GATE
end
subgraph "保护与监测"
P[TVS保护] --> CH1_GATE
P --> CH2_GATE
Q[电流检测] --> C
Q --> D
R[温度监测] --> S[智能调节]
S --> L
S --> N
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBBD3222规格书
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