graph LR
subgraph "三相PFC升压级"
A[三相380VAC输入] --> B[EMI滤波器]
B --> C[三相整流桥]
C --> D[升压电感]
D --> E[PFC开关节点]
E --> F["VBMB165R34SFD \n 650V/34A"]
F --> G[高压直流母线]
H[PFC控制器] --> I[高压栅极驱动器]
I --> F
G -->|电压反馈| H
end
subgraph "LLC谐振变换级"
G --> J[LLC谐振腔]
J --> K[变压器初级]
K --> L[LLC开关节点]
L --> M["VBMB165R34SFD \n 650V/34A"]
M --> N[初级地]
O[LLC控制器] --> P[栅极驱动器]
P --> M
K -->|电流检测| O
end
subgraph "保护电路"
Q[漏极RC吸收] --> F
R[栅源TVS保护] --> F
S[有源米勒钳位] --> I
T[过温检测] --> O
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
硬盘背板大电流供电拓扑详图
graph TB
subgraph "48V-12V同步Buck转换器"
A[48V中间总线] --> B[输入滤波]
B --> C[控制MOSFET]
C --> D[同步整流节点]
D --> E["VBM1101N \n 同步整流管"]
E --> F[输出滤波]
F --> G[12V输出]
H[控制器] --> I[驱动电路]
I --> C
I --> E
G -->|电压反馈| H
D -->|电流检测| H
end
subgraph "多路负载分配开关"
J[12V背板电源] --> K["VBM1101N \n 负载开关1"]
J --> L["VBM1101N \n 负载开关2"]
J --> M["VBM1101N \n 负载开关3"]
K --> N[硬盘组1]
L --> O[硬盘组2]
M --> P[硬盘组3]
Q[热插拔控制器] --> R[驱动信号]
R --> K
R --> L
R --> M
S[过流保护] --> Q
end
subgraph "热管理与保护"
T[温度传感器] --> U[热监控]
U --> V[降额控制]
V --> H
V --> Q
W[TVS保护阵列] --> C
W --> E
X[电流检测] --> S
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style K fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
冗余散热风扇驱动拓扑详图
graph LR
subgraph "冗余风扇PWM驱动通道"
A[BMC PWM输出] --> B[电平转换]
B --> C[驱动推挽电路]
C --> D["VBA1810S \n 风扇驱动MOSFET"]
D --> E[风扇连接器]
E --> F[冷却风扇]
G[48V电源] --> H[防反接保护]
H --> D
I[电流检测] --> J[堵转检测]
J --> K[故障信号]
K --> A
end
subgraph "四路冗余配置"
L["通道1"] --> M[风扇组A]
N["通道2"] --> O[风扇组B]
P["通道3"] --> Q[风扇组C]
R["通道4"] --> S[风扇组D]
T[风扇管理器] --> L
T --> N
T --> P
T --> R
U[温度反馈] --> T
end
subgraph "保护电路"
V[栅极TVS保护] --> D
W[续流二极管] --> F
X[RC吸收网络] --> D
Y[过温保护] --> T
end
subgraph "热管理策略"
Z1[进风温度] --> Z2[温度监控]
Z3[出风温度] --> Z2
Z4[CPU温度] --> Z2
Z2 --> Z5[PWM算法]
Z5 --> Z6[动态调速]
Z6 --> T
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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