graph TB
subgraph "三相全桥驱动电路"
A["电池电源 \n 36V/48V"] --> B["预驱动IC \n (FD6288/MTD6508)"]
B --> C["上桥驱动"]
B --> D["下桥驱动"]
subgraph "A相桥臂"
Q_AH["VBQF1402 \n 上管"]
Q_AL["VBQF1402 \n 下管"]
end
subgraph "B相桥臂"
Q_BH["VBQF1402 \n 上管"]
Q_BL["VBQF1402 \n 下管"]
end
subgraph "C相桥臂"
Q_CH["VBQF1402 \n 上管"]
Q_CL["VBQF1402 \n 下管"]
end
C --> Q_AH
D --> Q_AL
C --> Q_BH
D --> Q_BL
C --> Q_CH
D --> Q_CL
A --> Q_AH
A --> Q_BH
A --> Q_CH
Q_AL --> E["功率地"]
Q_BL --> E
Q_CL --> E
Q_AH --> F["电机A相"]
Q_AL --> F
Q_BH --> G["电机B相"]
Q_BL --> G
Q_CH --> H["电机C相"]
Q_CL --> H
F --> I["轮毂电机"]
G --> I
H --> I
end
subgraph "保护电路"
J["过流检测"] --> K["比较器"]
K --> L["故障锁存"]
L --> M["关断信号"]
M --> B
N["温度检测"] --> O["ADC"]
O --> MCU_CTRL["MCU控制"]
P["欠压保护"] --> Q["电压监控"]
Q --> M
end
subgraph "热管理"
R["2oz厚铜敷铜"] --> Q_AH
R --> Q_AL
S["散热过孔阵列"] --> PCB_LAYER["PCB内层"]
T["温度监控点"] --> N
end
style Q_AH fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电源管理拓扑详图
graph LR
subgraph "同步整流降压转换器"
A["电池输入 \n 36V-48V"] --> B["输入滤波电容"]
B --> C["功率电感L1"]
C --> D["开关节点"]
subgraph "同步整流对管"
Q_H["VBC6N2014 \n 高侧N-MOS"]
Q_L["VBC6N2014 \n 低侧N-MOS"]
end
D --> Q_H
D --> Q_L
Q_H --> E["输出电容"]
Q_L --> F["功率地"]
E --> G["12V系统电源"]
H["降压控制器"] --> I["高侧驱动"]
H --> J["低侧驱动"]
I --> Q_H
J --> Q_L
G -->|电压反馈| H
end
subgraph "二次电源分配"
G --> K["5V LDO"]
G --> L["3.3V LDO"]
K --> M["MCU及外设 \n 5V电源域"]
L --> N["传感器及通信 \n 3.3V电源域"]
end
subgraph "电池管理系统(BMS)"
O["电池组"] --> P["电量计量IC"]
O --> Q["均衡电路"]
O --> R["保护电路"]
subgraph "放电开关"
S["VBC6N2014 \n 双N-MOS"]
end
R --> S
S --> T["主电源输出"]
P --> U["MCU接口"]
Q --> U
R --> U
end
subgraph "EMC与保护"
V["π型滤波器"] --> A
W["TVS管阵列"] --> O
X["MLCC阵列"] --> E
Y["ESD保护"] --> M
end
style Q_H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style S fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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