graph LR
subgraph "USB-C输入保护与切换"
A["USB Type-C接口 \n VBUS 5-20V"] --> B["TVS保护阵列 \n ESD/浪涌"]
B --> C["输入滤波电容"]
C --> D["VBQF2658 P-MOS \n 高侧开关"]
D --> E["主输入VIN \n 5-20V"]
F["MCU控制信号"] --> G["电平转换驱动"]
G --> H["P-MOS栅极驱动"]
H --> D
subgraph "辅助电源"
E --> I["降压控制器"]
I --> J["3.3V LDO/降压"]
J --> K["MCU供电 3.3V"]
J --> L["接口芯片供电"]
end
E --> M["输入电压检测"]
M --> F
end
subgraph "多电源管理逻辑"
N["USB PD协议芯片"] --> O["电源能力协商"]
O --> P["输入电压设定"]
P --> Q["开关控制逻辑"]
Q --> F
R["备用电源输入"] --> S["电源选择电路"]
S --> T["OR-ing控制器"]
T --> U["电源切换MOSFET"]
U --> E
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
核心同步Buck转换器详图
graph TB
subgraph "同步Buck功率级"
A["输入VIN 5-20V"] --> B["输入电容"]
B --> C["VBQG1317上管 \n N-MOS"]
C --> D["开关节点"]
D --> E["Buck电感"]
E --> F["输出电容"]
F --> G["输出电压 1.8-5V"]
D --> H["VBQG1317下管 \n N-MOS"]
H --> I["功率地"]
end
subgraph "Buck控制与驱动"
J["同步Buck控制器"] --> K["栅极驱动器"]
K --> C
K --> H
G --> L["电压反馈"]
L --> J
subgraph "电流检测与保护"
M["下管电流检测"] --> N["电流比较器"]
N --> O["过流保护"]
O --> J
P["温度传感器"] --> Q["温度监控"]
Q --> R["过热保护"]
R --> J
end
end
subgraph "多路输出分配"
G --> S["1.8V供电轨"]
G --> T["3.3V供电轨"]
G --> U["5V供电轨"]
S --> V["DDR内存供电"]
T --> W["接口芯片供电"]
U --> X["外设供电"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
双硬盘智能负载开关详图
graph LR
subgraph "VBC6N3010双N-MOS负载开关"
A["输入电源VIN"] --> B["VBC6N3010 Ch1 \n 共漏极双N-MOS"]
A --> C["VBC6N3010 Ch2 \n 共漏极双N-MOS"]
subgraph "通道1控制"
D["MCU GPIO1"] --> E["电平转换/缓冲"]
E --> F["栅极驱动电阻"]
F --> G["Ch1栅极"]
end
subgraph "通道2控制"
H["MCU GPIO2"] --> I["电平转换/缓冲"]
I --> J["栅极驱动电阻"]
J --> K["Ch2栅极"]
end
B --> L["硬盘1供电输出"]
C --> M["硬盘2供电输出"]
L --> N["SATA/NVMe硬盘1"]
M --> O["SATA/NVMe硬盘2"]
end
subgraph "智能负载管理逻辑"
P["硬盘活动监测"] --> Q["负载状态判断"]
Q --> R["节能控制逻辑"]
R --> D
R --> H
S["电流检测电路"] --> T["过流比较器"]
T --> U["故障保护"]
U --> V["快速关断"]
V --> D
V --> H
end
subgraph "热插拔与缓启动"
W["输出电容"] --> X["缓启动电路"]
X --> Y["软启动控制"]
Y --> D
Y --> H
Z["热插拔检测"] --> AA["连接状态"]
AA --> R
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与EMC设计详图
graph TB
subgraph "三级散热系统"
A["一级: 金属外壳"] --> B["主要散热面"]
B --> C["AI芯片与硬盘接触面"]
subgraph "二级: PCB热设计"
D["大面积电源层敷铜"] --> E["VBQG1317散热焊盘"]
D --> F["VBC6N3010散热焊盘"]
G["多排散热过孔"] --> H["底层敷铜散热"]
end
subgraph "三级: 主动散热"
I["温度传感器"] --> J["MCU温度监控"]
J --> K["风扇PWM控制"]
K --> L["小型离心风扇"]
end
C --> M["热量传导路径"]
E --> M
F --> M
H --> M
L --> N["强制气流"]
N --> M
end
subgraph "EMC设计优化"
O["Buck开关节点"] --> P["最小化回路面积"]
P --> Q["就近放置去耦电容"]
R["功率MOSFET"] --> S["栅极串联电阻"]
S --> T["抑制开关振铃"]
U["电源输入"] --> V["π型滤波器"]
V --> W["共模电感"]
W --> X["传导EMI抑制"]
Y["高速数据线"] --> Z["屏蔽与隔离"]
Z --> AA["远离功率回路"]
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBQF2658规格书
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