graph LR
subgraph "高压隔离DC-DC变换级"
A["宽范围直流输入 \n 100-400VDC"] --> B["输入滤波与保护"]
B --> C["LLC谐振变换器"]
C --> D["高频变压器初级"]
D --> E["谐振开关节点"]
E --> F["VBL165R20S \n 高压主开关"]
F --> G["初级参考地"]
H["LLC谐振控制器"] --> I["栅极驱动器"]
I --> F
D -->|电压反馈| H
end
subgraph "次级整流与输出"
J["高频变压器次级"] --> K["同步整流桥"]
subgraph K["同步整流MOSFET"]
M1["同步整流管1"]
M2["同步整流管2"]
end
K --> L["输出滤波网络"]
L --> M["中间直流母线 \n 48VDC"]
N["同步整流控制器"] --> O["驱动电路"]
O --> M1
O --> M2
end
subgraph "辅助电源生成"
M --> P["多路辅助电源"]
P --> Q1["+12V辅助电源"]
P --> Q2["+5V数字电源"]
P --> Q3["+3.3V模拟电源"]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
射频功放供电拓扑详图
graph LR
subgraph "多相包络追踪电源"
A["48V中间母线"] --> B["多相Buck变换器"]
B --> C["高频电感阵列"]
C --> D["功率输出节点"]
subgraph "同步整流下管阵列"
Q1["VBQA1407 \n 40V/70A DFN8"]
Q2["VBQA1407 \n 40V/70A DFN8"]
Q3["VBQA1407 \n 40V/70A DFN8"]
Q4["VBQA1407 \n 40V/70A DFN8"]
end
D --> Q1
D --> Q2
D --> Q3
D --> Q4
Q1 --> E["输出滤波电容"]
Q2 --> E
Q3 --> E
Q4 --> E
E --> F["动态供电输出 \n 0-32V/50A"]
F --> G["射频功放模块"]
H["ET数字控制器"] --> I["高速驱动器阵列"]
I --> Q1
I --> Q2
I --> Q3
I --> Q4
J["基带信号输入"] --> H
end
subgraph "射频信号链路"
G --> K["功率放大器"]
K --> L["双工器/滤波器"]
L --> M["天线接口"]
N["本振与混频器"] --> K
end
subgraph "保护与监测"
O["电流检测放大器"] --> P["过流保护"]
Q["温度传感器"] --> R["过温保护"]
S["电压监测ADC"] --> T["过压/欠压保护"]
P --> U["故障锁存"]
R --> U
T --> U
U --> V["快速关断信号"]
V --> Q1
V --> Q2
end
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
精密控制与热管理拓扑详图
graph LR
subgraph "智能负载管理通道"
A["MCU/FPGA GPIO"] --> B["电平转换与驱动"]
B --> C["VBA1203M控制输入"]
subgraph C ["VBA1203M双NMOS开关"]
direction LR
GATE1[栅极端1]
GATE2[栅极端2]
SOURCE1[源极端1]
SOURCE2[源极端2]
DRAIN1[漏极端1]
DRAIN2[漏极端2]
end
VCC_12V["12V辅助电源"] --> DRAIN1
VCC_12V --> DRAIN2
SOURCE1 --> E["负载1: 天线控制"]
SOURCE2 --> F["负载2: 风扇驱动"]
E --> GND[系统参考地]
F --> GND
H["PWM信号发生器"] --> B
end
subgraph "散热系统控制"
I["温度传感器阵列"] --> J["热管理控制器"]
J --> K["风扇PWM驱动器"]
J --> L["泵速控制器(液冷)"]
K --> M["冷却风扇阵列"]
L --> N["液冷循环泵"]
subgraph "温度监测点"
T1["射频MOSFET温度"]
T2["高压MOSFET温度"]
T3["控制芯片温度"]
T4["环境温度"]
end
T1 --> I
T2 --> I
T3 --> I
T4 --> I
end
subgraph "天线控制子系统"
E --> O["移相器控制电路"]
E --> P["衰减器控制电路"]
O --> Q["有源天线单元"]
P --> Q
R["波束成形算法"] --> A
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBA1203M规格书
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