graph LR
subgraph "24V电机驱动H桥"
A["24V电机总线"] --> B["预驱动芯片"]
subgraph "H桥功率MOSFET"
Q1["VBGQF1305 \n 上桥臂1"]
Q2["VBGQF1305 \n 下桥臂1"]
Q3["VBGQF1305 \n 上桥臂2"]
Q4["VBGQF1305 \n 下桥臂2"]
end
B --> Q1
B --> Q2
B --> Q3
B --> Q4
Q1 --> C["电机相位A"]
Q2 --> D["电机地"]
Q3 --> E["电机相位B"]
Q4 --> D
C --> F["步进/伺服电机"]
E --> F
end
subgraph "驱动与保护电路"
G["MCU PWM"] --> H["电平转换"]
H --> B
subgraph "电流检测与保护"
I["高精度电流检测"]
J["比较器电路"]
K["故障锁存"]
end
C --> I
I --> J
J --> K
K --> L["关断信号"]
L --> B
subgraph "吸收与保护"
M["RC吸收电路"]
N["TVS保护"]
end
M --> Q1
M --> Q3
N --> B
end
subgraph "热管理设计"
O["大面积PCB敷铜"] --> Q1
O --> Q2
O --> Q3
O --> Q4
P["温度传感器"] --> Q["MCU ADC"]
Q --> R["动态电流限制"]
end
style Q1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q2 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
打印头能量管理拓扑详图
graph LR
subgraph "高压打印头驱动阵列"
A["~200V打印头电源"] --> B["打印头驱动IC"]
subgraph "多通道驱动MOSFET"
Q1["VB1201K \n 通道1"]
Q2["VB1201K \n 通道2"]
Q3["VB1201K \n 通道3"]
Q4["VB1201K \n 通道4"]
end
B --> Q1
B --> Q2
B --> Q3
B --> Q4
Q1 --> C["打印头加热元件1"]
Q2 --> D["打印头加热元件2"]
Q3 --> E["打印头加热元件3"]
Q4 --> F["打印头加热元件4"]
C --> G["公共返回端"]
D --> G
E --> G
F --> G
end
subgraph "脉冲能量控制"
H["MCU数据总线"] --> I["移位寄存器"]
I --> B
subgraph "时序控制"
J["打印时钟"]
K["锁存信号"]
L["能量脉冲宽度"]
end
J --> B
K --> B
L --> B
end
subgraph "高压隔离与保护"
M["光耦隔离"] --> N["高压侧驱动"]
N --> B
subgraph "保护网络"
O["高压TVS阵列"]
P["限流电阻"]
Q["隔离电容"]
end
O --> A
P --> Q1
Q --> G
end
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style Q2 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助系统电源管理拓扑详图
graph LR
subgraph "智能电源开关网络"
A["MCU GPIO"] --> B["电平转换/缓冲"]
B --> C["VBQG5222 N+P对1"]
B --> D["VBQG5222 N+P对2"]
B --> E["VBQG5222 N+P对3"]
B --> F["VBQG5222 N+P对4"]
subgraph "VBQG5222内部结构"
subgraph C ["双MOSFET互补对"]
direction LR
C_N["N-MOSFET \n 20mΩ"]
C_P["P-MOSFET \n 32mΩ"]
end
subgraph D ["双MOSFET互补对"]
direction LR
D_N["N-MOSFET"]
D_P["P-MOSFET"]
end
end
C --> G["DC-DC使能控制"]
D --> H["传感器电源"]
E --> I["风扇电源"]
F --> J["通信模块电源"]
G --> K["板载DC-DC转换器"]
H --> L["传感器阵列"]
I --> M["散热风扇"]
J --> N["以太网/RS-232模块"]
end
subgraph "电源路径管理"
O["12V辅助电源"] --> P["电源分配网络"]
P --> K
P --> L
P --> M
P --> N
subgraph "电流监测"
Q["电流检测IC"]
R["ADC输入"]
end
P --> Q
Q --> R
R --> A
end
subgraph "信号电平转换"
S["3.3V逻辑信号"] --> T["VBQG5222电平转换"]
T --> U["5V外设接口"]
U --> V["通信隔离"]
V --> N
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VB1201K规格书
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