graph LR
subgraph "四相Buck变换器"
A["12V输入总线"] --> B["输入电容"]
B --> C["相位1: VBGQA1400上管"]
B --> D["相位2: VBGQA1400上管"]
B --> E["相位3: VBGQA1400上管"]
B --> F["相位4: VBGQA1400上管"]
C --> G["VBGQA1400下管"]
D --> H["VBGQA1400下管"]
E --> I["VBGQA1400下管"]
F --> J["VBGQA1400下管"]
G --> K["输出电感1"]
H --> L["输出电感2"]
I --> M["输出电感3"]
J --> N["输出电感4"]
K --> O["输出电容"]
L --> O
M --> O
N --> O
O --> P["0.8-1.8V核心电源"]
Q["多相控制器"] --> R["栅极驱动器"]
R --> C
R --> D
R --> E
R --> F
R --> G
R --> H
R --> I
R --> J
end
subgraph "热管理设计"
S["多层PCB厚铜"] --> T["散热过孔阵列"]
T --> U["背面大面积铜层"]
V["温度传感器"] --> W["控制器"]
W --> X["动态频率调整"]
end
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
高速外设智能电源管理拓扑详图
graph TB
subgraph "双通道P-MOS负载开关"
A["BMC/CPLD GPIO"] --> B["电平转换电路"]
B --> C["VBQD4290AU通道1控制"]
B --> D["VBQD4290AU通道2控制"]
subgraph C ["VBQD4290AU 通道1"]
direction LR
GATE1["栅极"]
SOURCE1["源极连接3.3V"]
DRAIN1["漏极输出"]
end
subgraph D ["VBQD4290AU 通道2"]
direction LR
GATE2["栅极"]
SOURCE2["源极连接3.3V"]
DRAIN2["漏极输出"]
end
SOURCE1 --> E["3.3V辅助电源"]
SOURCE2 --> E
DRAIN1 --> F["PCIe SSD 3.3V_AUX"]
DRAIN2 --> G["PCIe SSD 3.3V_AUX"]
F --> H["TVS保护"]
G --> H
end
subgraph "电源序列管理"
I["上电序列控制器"] --> J["时序控制逻辑"]
J --> K["使能信号1: 网络芯片"]
J --> L["使能信号2: DDR模块"]
J --> M["使能信号3: SSD阵列"]
K --> N["VBQD4290AU开关"]
L --> O["VBQD4290AU开关"]
M --> P["VBQD4290AU开关"]
N --> Q["网络芯片电源"]
O --> R["DDR模块电源"]
P --> S["SSD背板电源"]
end
subgraph "故障隔离"
T["电流检测"] --> U["比较器"]
U --> V["故障信号"]
V --> W["GPIO关断"]
W --> C
W --> D
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
高压辅助电源与散热控制拓扑详图
graph LR
subgraph "高压辅助电源(ACF/LLC)"
A["PFC输出400VDC"] --> B["输入滤波"]
B --> C["谐振电容"]
C --> D["谐振电感"]
D --> E["变压器初级"]
E --> F["VBL155R09主开关"]
F --> G["初级地"]
H["PWM控制器"] --> I["栅极驱动"]
I --> F
subgraph "次级侧"
J["变压器次级"] --> K["同步整流"]
K --> L["输出滤波"]
L --> M["12V辅助输出"]
end
M --> N["风扇驱动电路"]
M --> O["管理引擎电源"]
end
subgraph "智能散热系统"
P["温度传感器阵列"] --> Q["BMC监控"]
Q --> R["PWM控制逻辑"]
R --> S["风扇速度控制"]
R --> T["泵速控制(液冷)"]
S --> U["冷却风扇"]
T --> V["液冷泵"]
subgraph "三级散热路径"
W["一级: 强制风冷"] --> X["VBGQA1400 MOSFET"]
Y["二级: PCB敷铜"] --> Z["VBL155R09 MOSFET"]
AA["三级: 环境对流"] --> AB["VBQD4290AU IC"]
end
end
subgraph "保护电路"
AC["RCD缓冲网络"] --> F
AD["过流保护"] --> AE["关断信号"]
AE --> H
AF["过压保护"] --> AE
AG["过温保护"] --> AE
end
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style X fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
点击下载：VBGQA1400规格书
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