graph TB
subgraph "三相交错并联PFC拓扑"
A["三相AC输入 \n L1,L2,L3,N"] --> B["EMI滤波器组"]
B --> C["三相整流桥"]
C --> D["PFC电感组 \n Lpfc1,Lpfc2,Lpfc3"]
D --> E["PFC开关节点"]
subgraph "高压MOSFET阵列"
Q1["VBP165R32SE \n 相位A"]
Q2["VBP165R32SE \n 相位B"]
Q3["VBP165R32SE \n 相位C"]
end
E --> Q1
E --> Q2
E --> Q3
Q1 --> F["高压直流母线 \n 700VDC"]
Q2 --> F
Q3 --> F
F --> G["母线支撑电容组 \n Cbulk1,Cbulk2"]
G --> H["母线电压检测"]
H --> I["PFC控制器"]
I --> J["栅极驱动器"]
J --> Q1
J --> Q2
J --> Q3
end
subgraph "保护与缓冲电路"
K["RCD缓冲网络"] --> Q1
L["RC吸收电路"] --> E
M["电压尖峰检测"] --> F
N["过流保护比较器"] --> I
end
style Q1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
DC-DC主功率级详细拓扑
graph LR
subgraph "LLC谐振变换器"
A["高压直流输入"] --> B["LLC谐振腔 \n Lr-Cr-Lm"]
B --> C["高频变压器 \n 初级侧"]
C --> D["初级开关节点"]
subgraph "初级开关管"
Qp1["VBP165R32SE"]
Qp2["VBP165R32SE"]
end
D --> Qp1
D --> Qp2
Qp1 --> E["初级地"]
Qp2 --> E
end
subgraph "同步整流桥"
F["变压器次级"] --> G["同步整流节点"]
subgraph "同步整流MOSFET"
Qs1["VBGL1806"]
Qs2["VBGL1806"]
Qs3["VBGL1806"]
Qs4["VBGL1806"]
end
G --> Qs1
G --> Qs2
G --> Qs3
G --> Qs4
Qs1 --> H["输出滤波电感"]
Qs2 --> H
Qs3 --> H
Qs4 --> H
H --> I["输出滤波电容"]
I --> J["直流输出"]
end
subgraph "控制与驱动"
K["LLC控制器"] --> L["初级栅极驱动器"]
L --> Qp1
L --> Qp2
M["同步整流控制器"] --> N["同步整流驱动器"]
N --> Qs1
N --> Qs2
N --> Qs3
N --> Qs4
end
style Qp1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Qs1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
热管理与保护系统拓扑
graph TB
subgraph "三级热管理系统"
subgraph "一级散热:液冷/强风冷"
A["液冷泵"] --> B["液冷板"]
C["高速风扇"] --> D["强制对流"]
B --> E["同步整流MOSFET \n VBGL1806"]
D --> E
end
subgraph "二级散热:风冷散热"
F["铝挤散热器"] --> G["高压MOSFET \n VBP165R32SE"]
H["变压器磁芯"] --> F
end
subgraph "三级散热:自然散热"
I["PCB厚铜敷铜"] --> J["控制芯片"]
K["机箱通风孔"] --> L["空气对流"]
I --> MCU_CHIP["MCU/DSP"]
I --> DRIVER_IC["驱动IC"]
end
M["温度传感器网络"] --> N["热管理MCU"]
N --> A
N --> C
end
subgraph "多层保护机制"
subgraph "电气保护"
O["RCD缓冲"] --> P["高压开关管"]
Q["RC吸收"] --> R["开关节点"]
S["TVS阵列"] --> T["栅极驱动芯片"]
U["肖特基并联"] --> V["同步整流管"]
end
subgraph "故障检测"
W["电流传感器"] --> X["硬件比较器"]
Y["电压采样"] --> Z["ADC监控"]
AA["温度传感器"] --> BB["过温保护"]
X --> CC["故障锁存器"]
BB --> CC
CC --> DD["全局关断信号"]
DD --> P
DD --> R
end
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
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