graph LR
subgraph "输入保护与滤波"
A[市电输入] --> B[防雷压敏电阻]
B --> C[共模电感]
C --> D[X/Y电容]
D --> E[整流桥]
end
subgraph "PFC功率级"
E --> F[PFC电感]
F --> G[PFC开关节点]
subgraph "高压MOSFET"
H["VBP195R03 \n 950V/3A"]
end
G --> H
H --> I[高压直流母线]
J[PFC控制器] --> K[隔离栅极驱动器]
K --> H
I -->|电压反馈| J
end
subgraph "隔离DC-DC"
I --> L[高频变压器]
L --> M[次级整流]
M --> N[输出滤波]
N --> O[低压直流总线]
P[DC-DC控制器] --> Q[驱动电路]
Q -->|控制信号| L
end
subgraph "保护电路"
R[输入保险丝] --> A
S[TVS阵列] --> H
T[RCD缓冲] --> H
U[过压保护] --> J
end
style H fill:#e8f4f8,stroke:#2a7ab0,stroke-width:2px
LED恒流驱动拓扑详图
graph TB
subgraph "Buck恒流驱动拓扑"
A[低压直流总线] --> B[输入电容]
B --> C[驱动电感]
C --> D[输出节点]
subgraph "大电流MOSFET"
E["VBP1602 \n 60V/270A"]
end
D --> E
E --> F[电流检测电阻]
F --> G[地]
H[LED恒流控制器] --> I[栅极驱动器]
I --> E
F -->|电流反馈| H
D --> J[LED阵列正极]
G --> K[LED阵列负极]
end
subgraph "多路LED配置"
subgraph "主照明LED串"
L1[LED1]
L2[LED2]
L3[LED3]
end
subgraph "辅助照明LED串"
M1[LED4]
M2[LED5]
end
J --> L1 --> L2 --> L3 --> K
J --> M1 --> M2 --> K
end
subgraph "PWM调光控制"
N[MCU PWM] --> O[调光接口]
O --> H
P[环境光传感器] --> Q[光照强度检测]
Q --> MCU2[调光算法]
MCU2 --> N
end
subgraph "温度保护"
R[LED温度传感器] --> S[温度监控]
S --> T[热折返控制]
T --> H
end
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "双路负载开关通道"
A[低压直流总线] --> B["VBG3316 Channel1 \n 漏极1"]
B --> C["VBG3316 Channel1 \n 源极1"]
C --> D[负载1输出]
E[MCU GPIO1] --> F[电平转换]
F --> G["VBG3316 Channel1 \n 栅极1"]
A --> H["VBG3316 Channel2 \n 漏极2"]
H --> I["VBG3316 Channel2 \n 源极2"]
I --> J[负载2输出]
K[MCU GPIO2] --> L[电平转换]
L --> M["VBG3316 Channel2 \n 栅极2"]
end
subgraph "典型负载配置"
D --> N[5G通信模块]
N --> O[地]
J --> P[高清摄像头]
P --> Q[地]
end
subgraph "其他负载直接供电"
A --> R[环境传感器]
A --> S[物联网模块]
A --> T[智能控制器]
end
subgraph "保护与检测"
subgraph "过流保护"
U[电流检测电阻] --> V[比较器]
V --> W[故障信号]
W --> MCU3[MCU]
MCU3 --> X[关断控制]
X --> F
X --> L
end
subgraph "静电防护"
Y[栅极TVS] --> G
Z[栅极TVS] --> M
end
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style H fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护拓扑详图
graph TB
subgraph "三级散热架构"
subgraph "一级散热: VBP195R03"
A["路灯金属结构散热"] --> B["高压MOSFET"]
C["导热硅脂"] --> B
end
subgraph "二级散热: VBP1602"
D["铝制散热器"] --> E["LED驱动MOSFET"]
F["强制风冷风扇"] --> D
G[温度传感器] --> H[MCU]
H --> I[风扇PWM控制]
I --> F
end
subgraph "三级散热: VBG3316"
J["PCB大面积敷铜"] --> K["负载开关MOSFET"]
L["热过孔阵列"] --> J
end
end
subgraph "电气保护网络"
subgraph "高压侧保护"
M[RCD缓冲电路] --> N[VBP195R03]
O[RC吸收电路] --> N
P[高压TVS] --> Q[漏-源极间]
end
subgraph "LED驱动保护"
R[肖特基续流二极管] --> S[VBP1602]
T[电流限制电路] --> S
end
subgraph "负载开关保护"
U[负载端TVS] --> V[输出端口]
W[自恢复保险丝] --> V
X[栅极电阻与TVS] --> Y[VBG3316栅极]
end
end
subgraph "系统级保护"
Z1[输入过压保护] --> Z2[关断信号]
Z3[输出短路保护] --> Z2
Z4[过热保护] --> Z2
Z2 --> Z5[所有驱动电路]
end
style B fill:#e8f4f8,stroke:#2a7ab0,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style K fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBP1602规格书
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