graph TB
subgraph "步进电机H桥驱动"
A[MCU PWM信号] --> B[栅极驱动器]
B --> C["VBQF3307-1A \n 上桥臂"]
B --> D["VBQF3307-1B \n 下桥臂"]
C --> E[电机绕组A+]
D --> F[电机绕组A-]
B --> G["VBQF3307-2A \n 上桥臂"]
B --> H["VBQF3307-2B \n 下桥臂"]
G --> I[电机绕组B+]
H --> J[电机绕组B-]
E --> K[步进电机]
F --> K
I --> K
J --> K
end
subgraph "电磁锁驱动电路"
L[MCU控制信号] --> M[驱动缓冲]
M --> N["VBQF3307-3A \n 开关管1"]
M --> O["VBQF3307-3B \n 开关管2"]
POWER_24V[24V电源] --> N
N --> P[电磁锁线圈]
O --> Q[地]
P --> Q
subgraph "保护电路"
R[续流二极管]
S[TVS管]
end
P --> R
P --> S
end
subgraph "散热设计"
T[PCB散热焊盘] --> U[大面积敷铜]
U --> V[热过孔阵列]
V --> W[背面铜层]
X[环境温度] --> Y[温控风扇]
Y --> Z[强制风冷]
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style N fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电源分配管理拓扑详图
graph LR
subgraph "智能负载开关"
A[MCU GPIO] --> B[电平转换]
B --> C["VB5222输入控制"]
subgraph C ["VB5222互补MOSFET"]
direction LR
IN_P[P-MOS栅极]
IN_N[N-MOS栅极]
S_P[P-MOS源极]
S_N[N-MOS源极]
D_P[P-MOS漏极]
D_N[N-MOS漏极]
end
VCC_12V[12V电源] --> D_P
D_P --> S_P
S_P --> E[负载正极]
D_N --> S_N
S_N --> F[负载回路]
F --> G[地]
H[负载负极] --> G
end
subgraph "同步整流应用"
I[开关电源] --> J[变压器次级]
J --> K[同步整流控制器]
K --> L["VB5222同步整流"]
L --> M[输出滤波]
M --> N[5V输出]
end
subgraph "多路电源分配"
O["VB5222通道1"] --> P[传感器电源]
Q["VB5222通道2"] --> R[通信模块电源]
S["VB5222通道3"] --> T[指示灯电源]
U["VB5222通道4"] --> V[显示单元电源]
subgraph "保护网络"
W[输入TVS]
X[输出TVS]
Y[滤波电容]
Z[磁珠]
end
POWER_IN[主电源] --> W
W --> O
W --> Q
W --> S
W --> U
P --> X
R --> X
T --> X
V --> X
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style L fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
通信与指示灯控制拓扑详图
graph TB
subgraph "通信接口保护"
A[RS-485收发器] --> B[A线]
A --> C[B线]
B --> D["VBK7695-A \n 保护MOSFET"]
C --> E["VBK7695-B \n 保护MOSFET"]
subgraph "保护网络"
F[TVS阵列]
G[ESD二极管]
H[共模扼流圈]
end
D --> F
E --> F
D --> G
E --> G
B --> H
C --> H
H --> I[外部总线]
end
subgraph "指示灯驱动矩阵"
J[MCU GPIO矩阵] --> K[扫描控制器]
K --> L["VBK7695-1 \n 行驱动"]
K --> M["VBK7695-2 \n 行驱动"]
K --> N["VBK7695-3 \n 行驱动"]
subgraph "列控制"
O[列驱动器1]
P[列驱动器2]
Q[列驱动器3]
end
L --> R[LED行1]
M --> S[LED行2]
N --> T[LED行3]
O --> U[LED列1]
P --> V[LED列2]
Q --> W[LED列3]
R --> X[LED指示灯阵列]
S --> X
T --> X
U --> X
V --> X
W --> X
end
subgraph "PWM调光控制"
Y[MCU PWM] --> Z[调光控制器]
Z --> AA["VBK7695-PWM \n 驱动MOSFET"]
AA --> AB[LED串]
AC[恒流源] --> AB
AB --> AD[地]
end
subgraph "紧凑封装布局"
AE[SC70-6封装] --> AF[极小占位面积]
AF --> AG[高密度布局]
AG --> AH[信号隔离]
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style AA fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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