graph LR
subgraph "PFC升压级"
A["85-265VAC输入"] --> B["EMI滤波器"]
B --> C["整流桥"]
C --> D["PFC电感"]
D --> E["PFC开关节点"]
E --> F["VBP16R47S \n 600V/47A"]
F --> G["高压直流母线 \n ~400VDC"]
H["PFC控制器"] --> I["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 \n Lr+Lm+Cr"]
J --> K["高频变压器"]
K --> L["LLC开关节点"]
L --> M["VBP16R47S \n 600V/47A"]
M --> N["初级地"]
O["LLC控制器"] --> P["栅极驱动器"]
P --> M
K -->|电流反馈| O
end
subgraph "同步整流输出"
K --> Q["变压器次级"]
Q --> R["同步整流桥"]
R --> S["VBE1630 \n 60V/45A"]
S --> T["输出滤波"]
T --> U["中间总线 \n 12V/48V"]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style S fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
中间总线DC-DC变换级拓扑详图
graph TB
subgraph "多相降压变换器"
A["12V/48V输入"] --> B["输入电容"]
B --> C["功率电感"]
C --> D["开关节点"]
subgraph "开关MOSFET阵列"
Q_HIGH1["VBE1630 \n 高侧开关"]
Q_LOW1["VBE1630 \n 低侧同步整流"]
Q_HIGH2["VBE1630 \n 高侧开关"]
Q_LOW2["VBE1630 \n 低侧同步整流"]
end
D --> Q_HIGH1
D --> Q_LOW1
D --> Q_HIGH2
D --> Q_LOW2
Q_HIGH1 --> E["输出滤波电容"]
Q_LOW1 --> F["地"]
Q_HIGH2 --> E
Q_LOW2 --> F
E --> G["硬盘背板供电 \n 12V/80A"]
end
subgraph "风扇供电电路"
H["12V输入"] --> I["降压变换器"]
I --> J["开关节点"]
J --> K["VBE1630 \n 开关管"]
K --> L["输出滤波"]
L --> M["风扇阵列 \n 12V/10A"]
end
subgraph "控制与驱动"
N["多相控制器"] --> O["栅极驱动器"]
O --> Q_HIGH1
O --> Q_LOW1
O --> Q_HIGH2
O --> Q_LOW2
P["PWM控制器"] --> R["驱动器"]
R --> K
end
style Q_HIGH1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style Q_LOW1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style K fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
多路低压负载点(POL)拓扑详图
graph LR
subgraph "3.3V SSD供电通道"
A["12V输入"] --> B["降压变换器"]
B --> C["开关节点"]
C --> D["VBNCB1206 \n 20V/95A"]
D --> E["LC滤波网络"]
E --> F["SSD阵列 \n 3.3V/30A"]
G["POL控制器"] --> H["驱动器"]
H --> D
end
subgraph "内存/网卡供电"
I["12V输入"] --> J["降压变换器"]
J --> K["开关节点"]
K --> L["VBNCB1206 \n 20V/95A"]
L --> M["LC滤波网络"]
M --> N["内存供电 \n 1.8V/40A"]
O["POL控制器"] --> P["驱动器"]
P --> L
end
subgraph "协处理器供电"
Q["12V输入"] --> R["降压变换器"]
R --> S["开关节点"]
S --> T["VBNCB1206 \n 20V/95A"]
T --> U["LC滤波网络"]
U --> V["协处理器 \n 0.9V/60A"]
W["POL控制器"] --> X["驱动器"]
X --> T
end
subgraph "负载开关管理"
Y["MCU GPIO"] --> Z["电平转换"]
Z --> AA["VBNCB1206负载开关"]
AA --> AB["外设模块"]
AC["12V辅助"] --> AA
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style T fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style AA fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护电路拓扑详图
graph TB
subgraph "三级散热系统"
A["一级散热: 强制风冷"] --> B["TO-247高压MOSFET"]
C["二级散热: PCB铜箔"] --> D["TO-252中间级MOSFET"]
E["三级散热: 自然对流"] --> F["TO-262 POL MOSFET"]
G["温度传感器阵列"] --> H["MCU温控单元"]
H --> I["风扇PWM控制"]
H --> J["负载降额管理"]
I --> K["系统风扇"]
J --> L["功率限制"]
end
subgraph "电气保护网络"
M["过压保护(OVP)"] --> N["比较器"]
O["过流保护(OCP)"] --> P["电流检测"]
Q["过温保护(OTP)"] --> R["温度检测"]
S["ESD保护"] --> T["TVS阵列"]
U["电压尖峰抑制"] --> V["RC吸收电路"]
W["缓冲保护"] --> X["RCD缓冲电路"]
N --> Y["故障锁存"]
P --> Y
R --> Y
Y --> Z["关断信号"]
Z --> B
Z --> D
end
subgraph "EMC优化设计"
AA["输入滤波"] --> AB["共模电感"]
AA --> AC["差模电感"]
AD["开关节点滤波"] --> AE["磁珠阵列"]
AF["输出滤波"] --> AG["π型滤波器"]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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