graph TB
subgraph "同步Buck变换器拓扑"
A["48V直流输入"] --> B["输入电容"]
B --> C["高压侧开关节点"]
C --> D["高压侧MOSFET"]
D --> E["同步整流节点"]
E --> F["VBGQA2403 \n 低压侧同步整流MOSFET \n -40V/-150A"]
F --> G["输出电感"]
G --> H["输出电容"]
H --> I["GPU/CPU负载 \n 12V/1.8V等"]
C --> J["栅极驱动信号"]
E --> K["栅极驱动信号"]
J --> D
K --> F
end
subgraph "控制与驱动"
L["PoL控制器"] --> M["双通道栅极驱动器"]
M --> J
M --> K
N["输出电压反馈"] --> L
O["输出电流检测"] --> L
P["温度传感器"] --> L
end
subgraph "热管理设计"
Q["PCB大面积敷铜"] --> F
R["散热过孔阵列"] --> F
S["可能的散热片"] --> F
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
高压PFC与母线转换拓扑详图
graph LR
subgraph "三相无桥PFC拓扑"
A[三相400VAC输入] --> B[EMI滤波器]
B --> C[三相整流桥]
C --> D[PFC电感]
D --> E[PFC开关节点]
E --> F["VBP165R25SE \n 超结深沟槽MOSFET \n 650V/25A"]
F --> G[高压直流母线400VDC]
H[PFC控制器] --> I[隔离栅极驱动器]
I --> F
G -->|电压反馈| H
J[电流检测] --> H
end
subgraph "LLC谐振变换器"
G --> K[LLC谐振腔]
K --> L[高频变压器初级]
L --> M[LLC开关节点]
M --> N["VBP165R25SE \n 超结深沟槽MOSFET \n 650V/25A"]
N --> O[初级地]
P[LLC控制器] --> Q[隔离栅极驱动器]
Q --> N
L -->|电流检测| P
end
subgraph "热管理设计"
R[TO247封装散热器] --> F
R --> N
S[高性能导热硅脂] --> F
S --> N
T[温度监控点] --> U[MCU]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style N fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能液冷泵与风机驱动拓扑详图
graph TB
subgraph "液冷泵BLDC电机H桥驱动"
A["48V/24V电源"] --> B["泵驱控制器"]
B --> C["预驱动芯片"]
subgraph "三相H桥MOSFET阵列"
C --> D_UH["VBN1303 \n 上桥臂U相 \n 30V/90A"]
C --> D_UL["VBN1303 \n 下桥臂U相 \n 30V/90A"]
C --> D_VH["VBN1303 \n 上桥臂V相 \n 30V/90A"]
C --> D_VL["VBN1303 \n 下桥臂V相 \n 30V/90A"]
C --> D_WH["VBN1303 \n 上桥臂W相 \n 30V/90A"]
C --> D_WL["VBN1303 \n 下桥臂W相 \n 30V/90A"]
end
D_UH --> E["BLDC电机U相"]
D_UL --> E
D_VH --> F["BLDC电机V相"]
D_VL --> F
D_WH --> G["BLDC电机W相"]
D_WL --> G
E --> H[液冷泵]
F --> H
G --> H
end
subgraph "冷却风扇PWM调速"
I["风扇电源"] --> J["PWM控制信号"]
J --> K["电平转换"]
K --> L["VBN1303 \n 风扇功率开关 \n 30V/90A"]
L --> M["冷却风扇阵列"]
M --> N[地]
O["风扇转速反馈"] --> P[MCU]
P --> J
end
subgraph "保护与吸收电路"
Q["续流二极管"] --> D_UL
R["RC吸收电路"] --> D_UL
S["过流检测"] --> B
T["温度传感器"] --> P
end
style D_UH fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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