graph LR
subgraph "PoE接口与保护"
A["PoE RJ45接口"] --> B["PoE变压器"]
B --> C["整流与检测"]
C --> D["PoE PD控制器"]
D --> E["分级功率协商"]
end
subgraph "反激式隔离DC-DC"
F["高压直流输入"] --> G["反激变压器初级"]
G --> H["VBL165R36S \n 主开关"]
H --> I["初级地"]
J["PWM控制器"] --> K["栅极驱动器"]
K --> H
G --> L["辅助绕组 \n VCC供电"]
L --> J
subgraph "次级输出与反馈"
M["反激变压器次级"] --> N["同步整流"]
N --> O["输出滤波"]
O --> P["12V系统母线"]
P --> Q["电压反馈"]
Q --> R["光耦隔离"]
R --> J
end
subgraph "保护电路"
S["RCD钳位"] --> H
T["输入过压保护"] --> F
U["输出过流保护"] --> P
end
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
红外补光驱动与调光控制详图
graph TB
subgraph "PWM调光控制"
A["主控MCU"] --> B["PWM生成器"]
B --> C["环境光传感器"]
C --> D["智能调光算法"]
D --> E["PWM输出信号"]
end
subgraph "高边驱动电路"
E --> F["电平转换器"]
F --> G["栅极驱动器"]
G --> H["VBP2205N \n P-MOSFET"]
I["12V电源"] --> H
H --> J["红外LED阵列"]
J --> K["系统地"]
end
subgraph "LED阵列配置"
direction LR
L["LED串1 \n 850nm"]
M["LED串2 \n 850nm"]
N["LED串3 \n 940nm"]
O["LED串4 \n 940nm"]
end
J --> L
J --> M
J --> N
J --> O
L --> P["均流电阻"]
M --> Q["均流电阻"]
N --> R["均流电阻"]
O --> S["均流电阻"]
P --> K
Q --> K
R --> K
S --> K
subgraph "热管理与保护"
T["温度传感器"] --> A
U["电流检测"] --> V["过流保护"]
V --> W["关断信号"]
W --> G
X["TVS保护"] --> G
end
style H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能温控与负载管理详图
graph LR
subgraph "温度监测网络"
A["内部NTC1 \n 主芯片区"] --> B["MCU ADC1"]
C["内部NTC2 \n 红外模组区"] --> D["MCU ADC2"]
E["外部环境NTC"] --> F["MCU ADC3"]
end
subgraph "智能温控逻辑"
B --> G["温度数据融合"]
D --> G
F --> G
G --> H["PID控制算法"]
H --> I["风扇PWM输出"]
H --> J["加热器开关控制"]
end
subgraph "双路负载开关"
K["VBQD4290AU \n 通道1"] --> L["散热风扇"]
M["VBQD4290AU \n 通道2"] --> N["加热电阻"]
O["12V电源"] --> K
O --> M
I --> K
J --> M
L --> P["系统地"]
N --> P
end
subgraph "辅助模块管理"
Q["MCU GPIO3"] --> R["电平转换"]
R --> S["VBQD4290AU \n 通道3"]
T["12V电源"] --> S
S --> U["麦克风模块"]
U --> P
end
subgraph "保护电路"
V["续流二极管"] --> L
W["续流二极管"] --> N
X["过流检测"] --> K
X --> M
Y["温度保护"] --> Z["全局关断"]
Z --> K
Z --> M
end
style K fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style M fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style S fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBL165R36S规格书
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