graph LR
subgraph "高压直流母线分配"
A["400VDC输入"] --> B["输入滤波器"]
B --> C["母线分配节点"]
C --> D["主路径开关"]
C --> E["备份路径开关"]
subgraph "冗余切换MOSFET"
D --> F["VBM18R12S \n 800V/12A"]
E --> G["VBM18R12S \n 800V/12A"]
end
F --> H["服务器机架1 \n 400VDC"]
G --> I["服务器机架2 \n 400VDC"]
J["冗余控制器"] --> K["隔离驱动器"]
K --> F
K --> G
L["电压检测"] --> J
M["电流检测"] --> J
end
subgraph "驱动与保护"
N["高压隔离驱动IC"] --> O["栅极驱动"]
O --> F
O --> G
P["RC吸收网络"] --> F
P --> G
Q["TVS阵列"] --> C
R["过流保护"] --> J
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
DC-DC转换与负载开关拓扑详图
graph TB
subgraph "48V转12V/5V同步降压"
A["48V输入"] --> B["输入电容"]
B --> C["高侧开关"]
C --> D["开关节点"]
D --> E["低侧同步整流"]
subgraph "同步整流MOSFET"
E --> F["VBGL1402 \n 40V/170A"]
E --> G["VBGL1402 \n 40V/170A"]
end
F --> H["输出电感"]
G --> H
H --> I["输出电容 \n 12V/5V"]
I --> J["负载点POL"]
end
subgraph "CPU/GPU负载开关"
K["12V输入"] --> L["负载开关控制"]
subgraph "大电流负载开关"
L --> M["VBGL1402 \n 负载开关1"]
L --> N["VBGL1402 \n 负载开关2"]
end
M --> O["CPU供电 \n 100A+"]
N --> P["GPU供电 \n 100A+"]
Q["电流检测IC"] --> R["BMC监控"]
S["温度传感器"] --> R
end
subgraph "驱动与布局"
T["大电流驱动器"] --> F
T --> G
U["厚铜PCB设计"] --> F
U --> G
V["散热器安装"] --> F
V --> G
W["多散热过孔"] --> F
W --> G
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
风扇阵列驱动与热管理拓扑详图
graph LR
subgraph "多路风扇PWM控制"
A["BMC PWM输出"] --> B["电平转换"]
B --> C["多路分配"]
subgraph "风扇驱动MOSFET阵列"
C --> D["VBA1410 \n 通道1"]
C --> E["VBA1410 \n 通道2"]
C --> F["VBA1410 \n 通道3"]
C --> G["VBA1410 \n 通道4"]
end
D --> H["风扇组1 \n 12V/2A"]
E --> I["风扇组2 \n 12V/2A"]
F --> J["风扇组3 \n 12V/2A"]
G --> K["风扇组4 \n 12V/2A"]
L["12V风扇总线"] --> D
L --> E
L --> F
L --> G
end
subgraph "温度反馈与调速"
M["CPU温度传感器"] --> N["BMC温度采集"]
O["GPU温度传感器"] --> N
P["环境温度传感器"] --> N
N --> Q["PID调速算法"]
Q --> A
R["风扇转速反馈"] --> N
end
subgraph "保护与EMC设计"
S["续流二极管"] --> D
S --> E
T["栅极串联电阻"] --> D
T --> E
U["磁环抑制"] --> H
V["PCB敷铜散热"] --> D
V --> E
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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