graph TB
subgraph "同步降压转换器(Buck)"
A["锂电池输入 \n 12-16.8V"] --> B["输入电容"]
B --> C["控制器/驱动器"]
C --> D["高边开关 \n VBGQF1402"]
C --> E["低边开关 \n VBGQF1402"]
D --> F["开关节点"]
E --> G["功率地"]
F --> H["功率电感"]
H --> I["输出电容"]
I --> J["多路电源轨输出 \n 1.2V/3.3V/5V/8V"]
K["电压反馈"] --> C
L["电流检测"] --> C
M["PMBus接口"] --> C
end
subgraph "同步升压转换器(Boost)"
N["锂电池输入 \n 12-16.8V"] --> O["输入电感"]
O --> P["控制器/驱动器"]
P --> Q["高边开关 \n VBGQF1402"]
P --> R["低边开关 \n VBGQF1402"]
Q --> S["高压输出 \n ±20-40V"]
R --> T["功率地"]
U["电压反馈"] --> P
V["电流检测"] --> P
end
subgraph "动态电压调节(DVFS)"
W["ARM/FPGA负载状态"] --> X["MCU能效管理"]
X --> M
X --> Y["频率/电压调节"]
Y --> J
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
精密信号路径管理拓扑详图
graph LR
subgraph "超声探头阵元切换"
A["探头阵元输入 \n 64/128通道"] --> B["模拟开关矩阵"]
B --> C["VBQG5222 \n 双路N+P沟道"]
C --> D["发射/接收切换"]
D --> E["高压脉冲发射"]
D --> F["微弱信号接收"]
G["FPGA时序控制"] --> H["低电压驱动 \n 1.8V/3.3V GPIO"]
H --> C
end
subgraph "多路电源轨管理"
subgraph "核心电源切换"
I["VBQG5222 \n 通道1"] --> J["FPGA核心电源 \n 1.2V"]
K["VBQG5222 \n 通道2"] --> L["ADC参考电源 \n 5V"]
end
subgraph "模拟电源切换"
M["VBQG5222 \n 通道3"] --> N["发射放大器电源 \n +20V"]
O["VBQG5222 \n 通道4"] --> P["接收放大器电源 \n -20V"]
end
Q["MCU上电时序控制"] --> I
Q --> K
Q --> M
Q --> O
end
subgraph "PCB布局优化"
R["DFN6(2x2)封装"] --> S["超小占板面积"]
T["双通道集成"] --> U["减少元件数量"]
V["低Vth(±0.8V)"] --> W["直接GPIO驱动"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
微型动力与热管理拓扑详图
graph TB
subgraph "散热风扇智能驱动"
A["温度传感器阵列"] --> B["MCU温度监控"]
B --> C["PWM控制算法"]
C --> D["驱动电路"]
D --> E["VBQF2205 P-MOSFET"]
E --> F["微型散热风扇 \n 12V/0.5-1A"]
G["续流二极管"] --> E
H["栅极驱动优化"] --> E
end
subgraph "对焦电机精密控制"
I["自动对焦算法"] --> J["电机驱动控制器"]
J --> K["VBQF2205 P-MOSFET"]
K --> L["微型对焦电机 \n ±20V/低电流"]
M["位置传感器"] --> I
N["电流检测"] --> J
end
subgraph "三级热管理系统"
subgraph "一级: PCB级散热"
O["VBGQF1402发热源"] --> P["DFN8散热焊盘"]
P --> Q["多层PCB敷铜"]
Q --> R["过孔阵列散热"]
end
subgraph "二级: 局部散热"
S["VBQF2205发热源"] --> T["局部大面积敷铜"]
T --> U["最小回路面积"]
end
subgraph "三级: 主动散热"
V["温度反馈控制"] --> W["无级PWM调速"]
W --> F
X["智能启停"] --> F
end
end
subgraph "可靠性防护"
Y["死区时间控制"] --> Z["防止直通"]
AA["RC吸收网络"] --> BB["抑制电压尖峰"]
CC["TVS保护"] --> DD["防止栅极过压"]
EE["降额设计 \n (80%电压/50%电流)"] --> FF["安全裕量"]
end
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style K fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBGQF1402规格书
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