graph TB
subgraph "Buck变换器(降压)"
A["宽压输入 \n 12-36VDC"] --> B["输入滤波电容"]
B --> C["VBGM1101N \n 主开关管"]
C --> D["续流二极管/ \n 同步整流管"]
D --> E["输出电感"]
E --> F["输出滤波电容"]
F --> G["5V/12V输出"]
H["Buck控制器"] --> I["栅极驱动器"]
I --> C
G -->|电压反馈| H
A -->|电流检测| H
end
subgraph "Boost变换器(升压)"
J["宽压输入 \n 12-36VDC"] --> K["输入滤波电容"]
K --> L["升压电感"]
L --> M["VBGM1101N \n 主开关管"]
M --> N["输出二极管/ \n 同步整流管"]
N --> O["输出滤波电容"]
O --> P["24V/36V输出"]
Q["Boost控制器"] --> R["栅极驱动器"]
R --> M
P -->|电压反馈| Q
J -->|电流检测| Q
end
subgraph "热管理设计"
S["一级:散热器"] --> C
S --> M
T["二级:PCB敷铜"] --> I
T --> R
U["三级:自然对流"] --> H
U --> Q
V["温度传感器"] --> W["MCU热管理"]
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
多路负载智能配电拓扑详图
graph LR
subgraph "负载开关通道1-3"
A["配电总线5V"] --> B["VBJ1322 \n 负载开关1"]
C["配电总线12V"] --> D["VBJ1322 \n 负载开关2"]
E["配电总线24V"] --> F["VBJ1322 \n 负载开关3"]
B --> G["温湿度传感器 \n 5V/100mA"]
D --> H["通信模块 \n 12V/500mA"]
F --> I["加热器 \n 24V/2A"]
J["MCU GPIO1"] --> K["电平转换"]
K --> L["栅极驱动1"]
L --> B
M["MCU GPIO2"] --> N["电平转换"]
N --> O["栅极驱动2"]
O --> D
P["MCU GPIO3"] --> Q["电平转换"]
Q --> R["栅极驱动3"]
R --> F
end
subgraph "负载开关通道4-5"
S["配电总线5V"] --> T["VBJ1322 \n 负载开关4"]
U["配电总线12V"] --> V["VBJ1322 \n 负载开关5"]
T --> W["GPS模块 \n 5V/50mA"]
V --> X["数据采集器 \n 12V/300mA"]
Y["MCU GPIO4"] --> Z["电平转换"]
Z --> AA["栅极驱动4"]
AA --> T
AB["MCU GPIO5"] --> AC["电平转换"]
AC --> AD["栅极驱动5"]
AD --> V
end
subgraph "保护电路"
AE["续流二极管"] --> G
AF["续流二极管"] --> H
AG["续流二极管"] --> I
AH["磁珠滤波"] --> W
AI["π型滤波"] --> X
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
AC-DC隔离前级拓扑详图
graph TB
subgraph "输入保护与滤波"
A["85-265VAC输入"] --> B["保险丝"]
B --> C["压敏电阻"]
C --> D["气体放电管"]
D --> E["共模电感"]
E --> F["X电容"]
F --> G["整流桥"]
G --> H["高压直流母线 \n ~400VDC"]
end
subgraph "反激变换功率级"
H --> I["直流母线电容"]
I --> J["VBM165R13S \n 主开关管"]
J --> K["反激变压器 \n 初级"]
K --> L["RCD吸收电路"]
L --> J
M["反激控制器"] --> N["隔离驱动器 \n Si8235"]
N --> J
K --> O["反激变压器 \n 次级"]
O --> P["整流二极管"]
P --> Q["输出滤波"]
Q --> R["直流输出 \n 12-24VDC"]
R --> S["电池充电管理"]
end
subgraph "浪涌与过压保护"
T["雷击感应浪涌"] --> U["多级防护: \n 1.气体放电管 \n 2.压敏电阻 \n 3.TVS"]
U --> V["保护地"]
W["电网波动"] --> X["输入过压保护"]
X --> Y["保护控制器"]
Y --> Z["关断信号"]
Z --> M
end
subgraph "热设计与隔离"
AA["散热器"] --> J
AB["安全间距 \n 8mm"] --> AC["初级侧"]
AB --> AD["次级侧"]
AE["隔离电压 \n 3000VAC"] --> AF["变压器"]
AE --> AG["光耦反馈"]
end
style J fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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