graph LR
subgraph "主DC-DC降压转换器"
A["12-24V适配器输入"] --> B["EMI滤波器"]
B --> C["VBGQF1810控制节点"]
C --> D["VBGQF1810 \n 80V/51A/DFN8"]
D --> E["3.3V核心电源"]
F["DC-DC控制器"] --> G["栅极驱动器"]
G --> D
E -->|电压反馈| F
end
subgraph "多路负载开关控制"
E --> H["负载分配总线"]
subgraph "智能负载开关阵列"
I["VBGE1102N \n 传感器通道"]
J["VBGE1102N \n 通信通道"]
K["VBGE1102N \n 显示通道"]
L["VBGE1102N \n 报警通道"]
end
H --> I
H --> J
H --> K
H --> L
M["MCU GPIO"] --> N["电平转换器"]
N --> I
N --> J
N --> K
N --> L
I --> O["传感器阵列"]
J --> P["无线模块"]
K --> Q["显示屏"]
L --> R["声光报警"]
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
备用电池管理拓扑详图
graph TB
subgraph "主备电无缝切换"
A["主电源(适配器)"] --> B["电源选择器/MUX"]
C["备用电池3.7V"] --> D["保护电路"]
D --> E["电池开关节点"]
E --> F["VBFB2104N \n -100V/-40A/TO251"]
F --> B
B --> G["系统总电源"]
H["电压比较器"] --> I["切换控制逻辑"]
I --> J["PMOS驱动器"]
J --> F
A -->|电压检测| H
C -->|电压检测| H
end
subgraph "电池保护与管理"
C --> K["过充保护"]
C --> L["过放保护"]
C --> M["短路保护"]
K --> N["保护控制IC"]
L --> N
M --> N
N --> O["保护执行"]
O --> P[电池输出]
end
subgraph "电源状态监控"
Q["主电源监测"] --> R["MCU ADC"]
S["电池电压监测"] --> R
T["电池电流监测"] --> R
R --> U["电源管理算法"]
U --> V["低功耗模式控制"]
U --> W["报警阈值设置"]
end
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护电路拓扑详图
graph LR
subgraph "三级散热架构"
subgraph "一级:芯片级"
A["VBGQF1810底部焊盘"] --> B["2oz厚铜箔"]
B --> C["散热过孔阵列 \n 0.3mm/0.8mm"]
end
subgraph "二级:板级"
D["VBGE1102N TO252"] --> E["PCB内层铜平面"]
E --> F["热传导路径"]
end
subgraph "三级:系统级"
G["控制IC"] --> H["有限空间对流"]
I["外壳散热设计"] --> J["最终散热"]
end
end
subgraph "温度监控网络"
K["NTC1:主MOSFET"] --> L["MCU温度采集"]
M["NTC2:负载开关"] --> L
N["NTC3:电池区域"] --> L
O["MCU内部温度"] --> L
L --> P["温度管理算法"]
P --> Q["动态频率调整"]
P --> R["负载降额控制"]
P --> S["风扇控制(可选)"]
end
subgraph "电气保护网络"
T["输入TVS阵列"] --> U["主电源入口"]
V["接口ESD保护"] --> W["传感器接口"]
X["π型滤波器"] --> Y["模拟电源"]
Z["磁珠隔离"] --> AA["数字/模拟地分割"]
AB["自恢复保险丝"] --> AC["可插拔接口"]
AD["RC吸收电路"] --> AE["开关节点"]
end
subgraph "故障诊断机制"
AF["电流检测电路"] --> AG["比较器阵列"]
AH["电压监测点"] --> AI["ADC多路复用"]
AG --> AJ["故障锁存"]
AI --> AJ
AJ --> AK["关断控制信号"]
AK --> AL["主开关"]
AK --> AM["负载开关"]
AN["看门狗定时器"] --> AO["系统复位"]
AP["心跳包机制"] --> AQ["通信状态监控"]
end
style A fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
点击下载：VBGE1102N规格书
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