graph LR
subgraph "主电源输入与滤波"
A["eVTOL主电源输入 \n 12V/24V DC"] --> B["π型EMI滤波器"]
B --> C["输入电容阵列 \n 低ESR电解+陶瓷"]
end
subgraph "主功率开关网络"
C --> D["VBGQF1402 \n 主输入开关"]
subgraph D ["VBGQF1402参数"]
direction LR
VOLTAGE["40V耐压"]
CURRENT["100A连续"]
RESISTANCE["Rds(on)=2.2mΩ"]
PACKAGE["DFN8(3x3)"]
end
D --> E["主配电母线 \n 12V/24V"]
end
subgraph "多路负载分配"
E --> F["负载开关1 \n 机载计算机"]
E --> G["负载开关2 \n 数据处理单元"]
E --> H["负载开关3 \n 传感器阵列"]
E --> I["负载开关4 \n 射频系统"]
F --> J["20-60A负载"]
G --> K["10-30A负载"]
H --> L["5-15A负载"]
I --> M["射频分配节点"]
end
subgraph "驱动与控制"
N["预驱动芯片"] --> O["高峰值电流 \n 栅极驱动"]
O --> D
P["MCU PWM"] --> N
Q["电流检测"] --> R["过流保护"]
R --> S["故障关断信号"]
S --> N
end
subgraph "热管理设计"
T["大面积PCB敷铜"] --> U["金属基板散热"]
U --> D
V["温度传感器"] --> W["MCU监控"]
W --> X["降额控制 \n 60% @85°C+"]
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
射频模块供电与使能控制详图 (场景2)
graph TB
subgraph "射频电源分配网络"
A["主配电母线"] --> B["射频专用滤波器"]
B --> C["π型滤波网络"]
C --> D["分配节点"]
end
subgraph "功放模块供电通道"
D --> E["VBI1638 \n 功放电源开关"]
subgraph E ["VBI1638参数"]
direction LR
VOLTAGE["60V耐压"]
CURRENT["8A连续"]
RESISTANCE["Rds(on)=30mΩ"]
THRESHOLD["Vth=1.7V"]
end
E --> F["LC滤波"]
F --> G["UHF/VHF功放模块 \n 28V/5A"]
end
subgraph "低噪放供电通道"
D --> H["VBI1638 \n 低噪放电源开关"]
H --> I["LC滤波"]
I --> J["高增益LNA \n 12V/0.5A"]
end
subgraph "TDD收发切换控制"
D --> K["VBI1638 \n TDD切换开关"]
K --> L["收发切换器"]
L --> M["天线端口"]
end
subgraph "控制与驱动"
N["MCU GPIO"] --> O["3.3V逻辑电平"]
O --> P["电平匹配"]
P --> E
P --> H
P --> K
Q["栅极串联电阻"] --> R["开关速度优化"]
R --> E
R --> H
R --> K
end
subgraph "热管理"
S["SOT89封装"] --> T["局部PCB敷铜"]
T --> E
T --> H
T --> K
U["温度监控"] --> V["功率自适应"]
V --> N
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
备份电源切换与隔离详图 (场景3)
graph LR
subgraph "备份电源系统"
A["锂电池备份 \n 12V DC"] --> B["备份输入滤波"]
B --> C["电压监控"]
end
subgraph "无缝切换网络"
C --> D["VBK1240 \n 主切换开关"]
subgraph D ["VBK1240参数"]
direction LR
VOLTAGE["20V耐压"]
CURRENT["5A连续"]
RESISTANCE["Rds(on)=30mΩ @2.5V"]
PACKAGE["SC70-3"]
end
D --> E["备份配电母线"]
MAIN_POWER["主电源"] --> F["VBK1240 \n 隔离开关"]
F --> G["主电源隔离"]
end
subgraph "关键负载冗余供电"
E --> H["导航模块备份 \n 12V/2A"]
E --> I["通信核心备份 \n 12V/1.5A"]
E --> J["安全传感器 \n 5V/0.5A"]
G --> K["主电源故障检测"]
end
subgraph "低压驱动控制"
L["MCU GPIO \n 1.8V/3.3V"] --> M["直接驱动"]
M --> D
M --> F
N["电源跌落检测"] --> O["切换优先级逻辑"]
O --> L
end
subgraph "保护与可靠性"
P["TVS保护"] --> Q["栅极ESD防护"]
Q --> D
Q --> F
R["振动加固"] --> S["焊盘增强设计"]
S --> D
S --> F
end
subgraph "热管理"
T["SC70-3封装"] --> U["自然散热"]
U --> D
U --> F
end
style D fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBK1240规格书
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