graph TB
subgraph "三相逆变桥拓扑"
A["高压直流母线 \n 400-800VDC"] --> B["三相逆变桥"]
subgraph "上桥臂MOSFET"
Q_U1["VBMB18R25S \n 800V/25A"]
Q_U2["VBMB18R25S \n 800V/25A"]
Q_U3["VBMB18R25S \n 800V/25A"]
end
subgraph "下桥臂MOSFET"
Q_L1["VBMB18R25S \n 800V/25A"]
Q_L2["VBMB18R25S \n 800V/25A"]
Q_L3["VBMB18R25S \n 800V/25A"]
end
B --> Q_U1
B --> Q_U2
B --> Q_U3
B --> Q_L1
B --> Q_L2
B --> Q_L3
Q_U1 --> C["U相输出"]
Q_L1 --> C
Q_U2 --> D["V相输出"]
Q_L2 --> D
Q_U3 --> E["W相输出"]
Q_L3 --> E
C --> F["LC滤波器"]
D --> F
E --> F
F --> G["三相380VAC \n 负载输出"]
end
subgraph "双向DC-DC变换拓扑"
H["高压直流母线"] --> I["LLC谐振变换器"]
subgraph "初级侧MOSFET"
Q_PRI1["VBMB18R25S \n 800V/25A"]
Q_PRI2["VBMB18R25S \n 800V/25A"]
end
subgraph "次级侧同步整流"
Q_SR1["VBMB18R25S \n 800V/25A"]
Q_SR2["VBMB18R25S \n 800V/25A"]
end
I --> Q_PRI1
I --> Q_PRI2
Q_PRI1 --> J["高频变压器"]
Q_PRI2 --> J
J --> Q_SR1
J --> Q_SR2
Q_SR1 --> K["隔离输出 \n 400VDC"]
Q_SR2 --> K
end
subgraph "驱动与保护"
L["隔离栅极驱动器"] --> Q_U1
L --> Q_L1
M["PWM控制器"] --> L
subgraph "保护网络"
N["RC吸收电路"]
O["米勒钳位电路"]
P["过流检测"]
Q["过温保护"]
end
N --> Q_U1
O --> Q_U1
P --> M
Q --> M
end
style Q_U1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q_PRI1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
中压电池管理与负载分配拓扑详图
graph LR
subgraph "电池组均衡与Buck/Boost变换"
A["高压电池组"] --> B["多通道均衡电路"]
subgraph "均衡MOSFET阵列"
Q_BAL1["VBGQA1302 \n 30V/90A"]
Q_BAL2["VBGQA1302 \n 30V/90A"]
Q_BAL3["VBGQA1302 \n 30V/90A"]
end
B --> Q_BAL1
B --> Q_BAL2
B --> Q_BAL3
Q_BAL1 --> C["均衡电阻网络"]
Q_BAL2 --> C
Q_BAL3 --> C
A --> D["Buck-Boost变换器"]
subgraph "同步Buck拓扑"
Q_BUCK_H["VBGQA1302 \n 控制开关"]
Q_BUCK_L["VBGQA1302 \n 同步整流"]
end
subgraph "同步Boost拓扑"
Q_BOOST_L["VBGQA1302 \n 控制开关"]
Q_BOOST_H["VBGQA1302 \n 同步整流"]
end
D --> Q_BUCK_H
D --> Q_BUCK_L
D --> Q_BOOST_L
D --> Q_BOOST_H
Q_BUCK_H --> E["输出电感"]
Q_BUCK_L --> E
Q_BOOST_L --> F["Boost电感"]
Q_BOOST_H --> F
E --> G["低压直流母线 \n 48VDC"]
F --> G
end
subgraph "智能负载分配矩阵"
G --> H["负载分配控制器"]
subgraph "负载开关通道"
SW_LOAD1["VBGQA1302 \n 雷达电源"]
SW_LOAD2["VBGQA1302 \n AI计算电源"]
SW_LOAD3["VBGQA1302 \n 通信电源"]
SW_LOAD4["VBGQA1302 \n 照明电源"]
end
H --> SW_LOAD1
H --> SW_LOAD2
H --> SW_LOAD3
H --> SW_LOAD4
SW_LOAD1 --> I["雷达系统"]
SW_LOAD2 --> J["AI计算单元"]
SW_LOAD3 --> K["通信设备"]
SW_LOAD4 --> L["环境照明"]
subgraph "优先级管理"
M["MCU控制逻辑"]
N["负载优先级表"]
O["时序控制"]
end
H --> M
M --> N
M --> O
end
subgraph "热管理与PCB设计"
P["大面积敷铜散热"] --> Q_BUCK_H
P --> Q_BUCK_L
Q["多排散热过孔"] --> SW_LOAD1
Q --> SW_LOAD2
R["PCB背面散热板"] --> ALL_MOSFETS["所有功率MOSFET"]
end
style Q_BUCK_H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style SW_LOAD1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
辅助电源与智能保护拓扑详图
graph TB
subgraph "辅助电源系统"
A["低压直流母线 \n 48VDC"] --> B["多路输出DC-DC"]
subgraph "隔离电源模块"
ISO_12V["12V隔离输出"]
ISO_5V["5V隔离输出"]
ISO_3V3["3.3V隔离输出"]
end
B --> ISO_12V
B --> ISO_5V
B --> ISO_3V3
ISO_12V --> C["驱动电路电源"]
ISO_5V --> D["MCU与逻辑电源"]
ISO_3V3 --> E["传感器电源"]
end
subgraph "智能保护开关矩阵"
F["主控MCU"] --> G["保护控制逻辑"]
subgraph "VBA5311保护通道"
PROT_CH1["CH1: N+P MOS \n 通信接口保护"]
PROT_CH2["CH2: N+P MOS \n 传感器电源开关"]
PROT_CH3["CH3: N+P MOS \n 风扇控制"]
PROT_CH4["CH4: N+P MOS \n 紧急关断"]
end
G --> PROT_CH1
G --> PROT_CH2
G --> PROT_CH3
G --> PROT_CH4
PROT_CH1 --> H["RS485/CAN接口"]
PROT_CH2 --> I["温湿度传感器"]
PROT_CH3 --> J["散热风扇阵列"]
PROT_CH4 --> K["系统总关断"]
subgraph "保护功能"
L["过流保护"]
M["过压保护"]
N["反接保护"]
O["ESD保护"]
end
PROT_CH1 --> L
PROT_CH2 --> M
PROT_CH3 --> N
PROT_CH4 --> O
end
subgraph "浪涌与雷击防护"
P["高压直流输入"] --> Q["三级防护网络"]
subgraph "防护器件"
R["气体放电管"]
S["压敏电阻阵列"]
T["TVS二极管"]
U["自恢复保险"]
end
Q --> R
Q --> S
Q --> T
Q --> U
R --> V["共模滤波器"]
S --> V
T --> V
U --> V
V --> W["主功率电路"]
end
subgraph "环境适应性设计"
X["三防漆喷涂"] --> ALL_PCB["所有PCB板"]
Y["硅胶灌封"] --> CRITICAL_AREAS["关键电路区域"]
Z["防护外壳"] --> ENTIRE_SYSTEM["整机系统"]
AA["盐雾过滤网"] --> COOLING_PATH["散热风道"]
BB["防腐涂层"] --> HEATSINK["散热器表面"]
end
style PROT_CH1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBGQA1302规格书
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