graph LR
subgraph "半桥电机驱动器"
A[5V电源输入] --> B[退耦电容阵列]
B --> C[VBQF3316G供电]
subgraph "半桥结构"
D["高侧MOSFET"]
E["低侧MOSFET"]
end
C --> D
C --> E
F[MCU PWM信号] --> G[半桥驱动器]
G --> D
G --> E
D --> H[电机输出A]
E --> I[电机输出B]
H --> J[步进电机绕组A]
I --> K[步进电机绕组B]
end
subgraph "保护与缓冲"
L[RC缓冲网络] --> H
M[RC缓冲网络] --> I
N[电流检测电阻] --> O[电流检测放大器]
O --> P[过流保护]
P --> Q[关断信号]
Q --> G
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能电源域管理拓扑详图
graph TB
subgraph "VBC6P2216双路负载开关"
A[5V主电源] --> B[输入滤波]
B --> C["VBC6P2216通道1"]
B --> D["VBC6P2216通道2"]
subgraph C ["通道1内部结构"]
direction LR
IN1[控制输入1]
S1[源极1]
D1[漏极1]
end
subgraph D ["通道2内部结构"]
direction LR
IN2[控制输入2]
S2[源极2]
D2[漏极2]
end
E[MCU控制信号] --> F[电平转换]
F --> IN1
F --> IN2
D1 --> G[图像传感器电源]
D2 --> H[LED照明电源]
G --> I[退耦电容]
H --> J[铁氧体磁珠]
I --> K[图像传感器]
J --> L[LED阵列]
end
subgraph "电源监控与保护"
M[电压检测] --> N[ADC输入]
N --> O[MCU ADC]
P[TVS保护管] --> A
Q[过流检测] --> R[比较器]
R --> S[故障信号]
S --> T[关断控制]
T --> IN1
T --> IN2
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
信号通路与热管理拓扑详图
graph LR
subgraph "低功耗信号开关"
A[1.8V/3.3V逻辑电源] --> B["VBHA1230N栅极"]
C[模拟/数字电源] --> D["VBHA1230N源极"]
E[MCU GPIO] --> F[直接驱动]
F --> B
subgraph VBHA1230N ["VBHA1230N开关"]
direction LR
GATE[栅极]
SOURCE[源极]
DRAIN[漏极]
end
D --> SOURCE
DRAIN --> H[负载电路]
H --> I[地]
end
subgraph "三级热管理架构"
J["一级散热: PCB敷铜"] --> K["VBQF3316G \n 电机驱动器"]
L["二级散热: 引脚导热"] --> M["VBC6P2216 \n 负载开关"]
N["三级散热: 自然对流"] --> O["VBHA1230N \n 信号开关"]
P[温度传感器阵列] --> Q[MCU温度监控]
Q --> R[动态功耗调节]
R --> S[频率/电压调节]
S --> E
end
subgraph "EMC与信号完整性"
T[电源退耦电容] --> U[VBQF3316G VDD]
V[电机线屏蔽] --> W[步进电机]
X[星型接地] --> Y[模拟地平面]
Z[铁氧体磁珠] --> AA[数字电源路径]
end
style VBHA1230N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style K fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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