graph LR
subgraph "输入滤波与保护"
A["电网输入 \n L/N"] --> B["共模电感"]
B --> C["X电容"]
C --> D["Y电容"]
D --> E["整流桥"]
F["压敏电阻MOV"] -->|浪涌保护| A
G["TVS管"] -->|瞬态保护| A
end
subgraph "输入级功率开关"
E --> H["高压直流母线"]
H --> I["VBPB17R15S \n 700V/15A/TO3P"]
I --> J["DC-DC转换器输入"]
K["驱动电路"] --> I
L["电流检测电阻"] -->|过流保护| M["保护逻辑"]
M --> K
N["RCD缓冲"] --> I
O["RC吸收"] --> I
end
subgraph "故障检测与反馈"
P["电压采样"] --> Q["比较器"]
R["温度传感器"] --> S["ADC"]
S --> M
Q --> M
M --> T["故障指示"]
end
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style F fill:#ffebee,stroke:#f44336,stroke-width:2px
style G fill:#ffebee,stroke:#f44336,stroke-width:2px
通信与负载管理拓扑详图
graph TB
subgraph "智能负载开关矩阵"
A["MCU GPIO"] --> B["电平转换器"]
B --> C["VBN1615栅极驱动"]
subgraph C ["VBN1615开关阵列"]
direction LR
CH1["通道1: 通信模块"]
CH2["通道2: 显示单元"]
CH3["通道3: 继电器"]
CH4["通道4: 背光"]
end
D["12V辅助电源"] --> CH1
D --> CH2
D --> CH3
D --> CH4
CH1 --> E["4G/5G模块 \n + 磁珠滤波"]
CH2 --> F["LCD显示屏 \n + 电压调节"]
CH3 --> G["控制继电器 \n + 续流二极管"]
CH4 --> H["LED背光 \n + 限流电阻"]
end
subgraph "状态监测与保护"
I["电流检测电路"] --> J["通信模块电流"]
K["电流检测电路"] --> L["继电器电流"]
M["温度传感器"] --> N["PCB热点"]
J --> O["ADC输入"]
L --> O
N --> O
O --> P["MCU"]
P --> Q["过载保护逻辑"]
Q --> C
end
subgraph "通信接口"
R["MCU UART"] --> S["RS485收发器"]
T["MCU SPI"] --> U["电力线载波"]
V["MCU RF接口"] --> W["无线模块"]
S --> X["A/B通信总线"]
U --> Y["耦合电路"]
W --> Z["天线匹配网络"]
end
style CH1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style CH2 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
计量单元供电与保护拓扑详图
graph LR
subgraph "计量供电链路"
A["3.3V辅助电源"] --> B["VBM1611S \n 60V/60A/TO220"]
B --> C["π型滤波器 \n L + C + C"]
C --> D["低噪声LDO \n 高PSRR > 70dB"]
D --> E["高精度基准源"]
E --> F["计量芯片电源"]
end
subgraph "高精度采样电路"
G["电流互感器CT"] --> H["采样电阻 \n 高精度低温漂"]
I["电压分压网络"] --> J["缓冲放大器"]
H --> K["可编程增益放大器PGA"]
J --> K
K --> L["24位Σ-Δ ADC"]
L --> M["计量处理单元"]
end
subgraph "噪声隔离设计"
N["模拟地AGND"] --> O["单点星形接地"]
P["数字地DGND"] --> O
Q["功率地PGND"] --> O
R["保护环Guard Ring"] -->|包围| S["模拟信号走线"]
T["屏蔽层"] -->|隔离| U["开关噪声源"]
end
subgraph "保护与诊断"
V["软启动电路"] --> B
W["过流检测"] --> X["快速关断"]
Y["温度监测"] --> Z["降额控制"]
X --> B
Z --> B
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style H fill:#f3e5f5,stroke:#9c27b0,stroke-width:2px
style L fill:#f3e5f5,stroke:#9c27b0,stroke-width:2px
点击下载：VBPB17R15S规格书
中文
English
