graph TB
subgraph "航空电网输入保护"
A["28VDC/270VDC输入"] --> B["TVS浪涌保护"]
B --> C["π型EMI滤波器"]
C --> D["输入过压/欠压保护"]
end
subgraph "隔离型DC-DC变换器 (反激/LLC拓扑)"
D --> E["PFC预调节"]
E --> F["直流母线"]
F --> G["谐振腔/变压器原边"]
G --> H["开关节点"]
H --> I["VBE175R04 \n 原边主开关"]
I --> J["原边地"]
K["隔离控制器"] --> L["栅极驱动器"]
L --> I
subgraph "原边保护电路"
M["RCD钳位网络"]
N["VDS电压检测"]
O["原边电流检测"]
end
M --> I
N --> K
O --> K
end
subgraph "次级侧与输出"
P["变压器次级"] --> Q["同步整流"]
Q --> R["输出滤波"]
R --> S["隔离输出 \n 12V/24VDC"]
S --> T["隔离电压反馈"]
T --> U["光耦/隔离放大器"]
U --> K
end
subgraph "安全与符合性"
V["DO-160G电气间隙"]
W["加强绝缘设计"]
X["HIPOT测试点"]
end
style I fill:#e8f4ff,stroke:#0066cc,stroke-width:2px
style K fill:#f3e5f5,stroke:#8e24aa,stroke-width:2px
仿真负载驱动拓扑详图
graph LR
subgraph "高精度PWM驱动通道"
A["FPGA/PWM控制器"] --> B["驱动信号隔离"]
B --> C["大电流栅极驱动器"]
C --> D["VBQA1401 \n 负载开关"]
D --> E["仿真负载"]
E --> F["电流检测电阻"]
F --> G["高精度ADC"]
G --> A
H["直流电源"] --> D
end
subgraph "多通道负载阵列"
subgraph "电机仿真通道"
I1["VBQA1401_1"] --> J1["电机模型负载"]
end
subgraph "舵机仿真通道"
I2["VBQA1401_2"] --> J2["舵机模型负载"]
end
subgraph "航电仿真通道"
I3["VBQA1401_3"] --> J3["航电设备模型"]
end
K["仿真总线"] --> I1
K --> I2
K --> I3
end
subgraph "保护与监测"
L["快速续流二极管"] --> D
M["VDS电压钳位"] --> D
N["NTC温度传感器"] --> O["温度监测IC"]
P["过流比较器"] --> Q["故障锁存"]
Q --> R["紧急关断"]
R --> C
end
subgraph "散热设计"
S["DFN底部焊盘"] --> T["热过孔阵列"]
T --> U["内部铜层"]
U --> V["散热金属基板"]
W["温度监控点"] --> O
end
style D fill:#e8f7e9,stroke:#2e7d32,stroke-width:2px
style I1 fill:#e8f7e9,stroke:#2e7d32,stroke-width:2px
style A fill:#f3e5f5,stroke:#8e24aa,stroke-width:2px
低噪声电源拓扑详图
graph TB
subgraph "负载点(PoL)电源架构"
A["12V中间总线"] --> B["输入滤波"]
B --> C["同步Buck控制器"]
C --> D["上管驱动"]
C --> E["下管驱动"]
D --> F["上管MOSFET"]
E --> G["VBL1307 \n 同步整流下管"]
F --> H["开关节点"]
G --> H
H --> I["输出电感"]
I --> J["输出电容阵列"]
J --> K["精密电源输出"]
subgraph "多级滤波网络"
L["高频陶瓷电容"]
M["聚合物电容"]
N["电解电容"]
end
L --> K
M --> K
N --> K
end
subgraph "低噪声设计技术"
O["星型接地"] --> P["模拟地平面"]
Q["电源分割"] --> R["敏感电路保护区"]
S["屏蔽罩"] --> T["噪声隔离区"]
U["铁氧体磁珠"] --> V["高频噪声抑制"]
end
subgraph "电源分配网络"
W["3.3V传感器电源"] --> X["模拟前端AFE"]
Y["1.8V DSP核电源"] --> Z["数字信号处理器"]
AA["5V接口电源"] --> AB["通信接口"]
AC["多相位并联"] --> AD["大电流路径"]
end
subgraph "监控与调整"
AE["输出电压监测"] --> AF["数字电位器"]
AG["负载电流监测"] --> AH["动态调整"]
AI["温度监测"] --> AJ["温控降频"]
end
style G fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style C fill:#f3e5f5,stroke:#8e24aa,stroke-width:2px
style K fill:#e8f4ff,stroke:#0066cc,stroke-width:2px
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