graph LR
subgraph "谐振逆变电路"
A["直流母线540VDC"] --> B["全桥/半桥拓扑"]
B --> C["谐振电感Lr"]
C --> D["谐振电容Cr"]
D --> E["高频变压器初级"]
subgraph "高压MOSFET桥臂"
Q1["VBN165R11SE \n 650V/11A"]
Q2["VBN165R11SE \n 650V/11A"]
Q3["VBE18R06SE \n 800V/6A"]
Q4["VBE18R06SE \n 800V/6A"]
end
B --> Q1
B --> Q2
B --> Q3
B --> Q4
Q1 --> F["高压地"]
Q2 --> F
Q3 --> F
Q4 --> F
end
subgraph "驱动与保护"
G["谐振控制器"] --> H["隔离驱动器"]
H --> Q1
H --> Q2
H --> Q3
H --> Q4
I["RCD缓冲电路"] --> Q1
J["电流检测"] --> K["过流比较器"]
K --> L["故障锁存"]
L --> M["关断信号"]
M --> H
end
style Q1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q3 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
低压驱动与智能管理拓扑详图
graph TB
subgraph "低压大电流驱动级"
A["变压器次级"] --> B["整流滤波"]
B --> C["驱动桥臂"]
subgraph "低压MOSFET阵列"
Q1["VBGQTA11505 \n 150V/150A"]
Q2["VBGQTA11505 \n 150V/150A"]
Q3["VBGQTA11505 \n 150V/150A"]
Q4["VBGQTA11505 \n 150V/150A"]
end
C --> Q1
C --> Q2
C --> Q3
C --> Q4
Q1 --> D["匹配电感"]
Q2 --> D
Q3 --> D
Q4 --> D
D --> E["匹配电容"]
E --> F["超声换能器"]
end
subgraph "智能负载管理"
G["MCU GPIO"] --> H["电平转换"]
H --> I["VBA2333 PMOS"]
subgraph I ["VBA2333 控制通道"]
direction LR
IN[栅极]
S[源极]
DRAIN[漏极]
end
VCC_12V["12V辅助电源"] --> DRAIN
S --> J["风扇/继电器"]
J --> K["地"]
L["温度传感器"] --> M["ADC"]
M --> N["PWM控制"]
N --> I
end
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与可靠性拓扑详图
graph LR
subgraph "三级散热系统"
A["一级: 强制风冷"] --> B["低压MOSFET \n VBGQTA11505"]
C["二级: 被动散热"] --> D["高压MOSFET \n VBN165R11SE"]
E["三级: PCB敷铜"] --> F["控制芯片 \n VBA2333"]
G["散热器温度"] --> H["MCU"]
H --> I["风扇PWM"]
H --> J["过温保护"]
I --> K["冷却风扇"]
end
subgraph "电气保护网络"
L["RCD缓冲"] --> M["高压开关管"]
N["RC吸收"] --> O["谐振节点"]
P["TVS阵列"] --> Q["栅极驱动"]
R["续流二极管"] --> S["感性负载"]
T["电流检测"] --> U["比较器"]
U --> V["故障信号"]
V --> W["快速关断"]
W --> M
W --> B
end
subgraph "可靠性设计"
X["2oz加厚铜箔"] --> Y["功率路径"]
Z["散热过孔"] --> AA["热管理"]
AB["磁屏蔽"] --> AC["变压器/电感"]
AD["屏蔽走线"] --> AE["信号完整性"]
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
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