graph LR
subgraph "输入保护与滤波"
A["卡车蓄电池 \n 24V/12V"] --> B["π型EMI滤波器"]
B --> C["瞬态电压抑制"]
C --> D["ISO7637-2脉冲防护"]
D --> E["输入电容组"]
end
subgraph "高压隔离开关"
E --> F["VBMB18R20S栅极"]
G["高压开关控制器"] --> H["栅极驱动器"]
H --> F
subgraph F ["VBMB18R20S电路"]
direction LR
GATE[栅极端]
DRAIN[漏极端]
SOURCE[源极端]
end
DRAIN --> I["高压直流母线"]
SOURCE --> J["初级地"]
K["电流检测电阻"] --> L["过流保护"]
L --> G
end
subgraph "隔离DC-DC变换"
I --> M["高频变压器初级"]
M --> N["隔离反馈光耦"]
N --> O["次级控制器"]
O --> P["同步整流"]
P --> Q["隔离输出 \n 12V/5V"]
Q --> R["辅助电源分配"]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
核心电源高效转换拓扑详图
graph TB
subgraph "多相同步Buck转换器"
A["12V辅助输入"] --> B["输入电容组"]
B --> C["Buck控制器"]
C --> D["上管驱动"]
C --> E["下管驱动"]
subgraph "同步整流下管"
F["VBM1310 \n 30V/80A"]
end
E --> F
F --> G["输出电感"]
G --> H["输出电容组"]
H --> I["核心电压域 \n 3.3V/1.8V/1.2V"]
I --> J["动态负载响应网络"]
J --> K["处理器/CVDD"]
J --> L["存储器/DVDD"]
J --> M["接口/IOVDD"]
subgraph "电流检测与补偿"
N["DCR电流检测"]
O["电压反馈环"]
P["电流反馈环"]
end
N --> C
O --> C
P --> C
end
subgraph "电源监控与管理"
Q["PMIC电源管理IC"] --> R["多路LDO输出"]
R --> S["实时时钟电源"]
R --> T["传感器电源"]
U["电压监控器"] --> V["复位电路"]
V --> W["看门狗定时器"]
W --> X["系统复位信号"]
X --> K
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能外设管理与保护拓扑详图
graph LR
subgraph "集成半桥负载驱动"
A["MCU PWM输出"] --> B["电平转换电路"]
B --> C["VBA3316G输入"]
subgraph C ["VBA3316G半桥"]
direction LR
IN1[IN1控制]
IN2[IN2控制]
OUT1[OUT1输出]
OUT2[OUT2输出]
VCC[VCC电源]
GND[GND地]
end
VCC --> D["12V电源"]
GND --> E["电源地"]
OUT1 --> F["散热风扇"]
OUT2 --> G["LED照明阵列"]
H["死区时间控制"] --> I["防直通逻辑"]
I --> C
end
subgraph "智能负载开关管理"
J["MCU GPIO控制"] --> K["使能逻辑"]
K --> L["VBG3638负载开关"]
subgraph L ["VBG3638负载开关"]
direction LR
EN[使能端]
IN[输入端]
OUT[输出端]
end
M["12V电源"] --> IN
OUT --> N["摄像头模块"]
OUT --> O["超声波传感器"]
P["过流保护"] --> Q["热关断"]
Q --> R["故障标志"]
R --> J
end
subgraph "接口保护电路"
S["通信接口"] --> T["ESD保护阵列"]
T --> U["共模扼流圈"]
U --> V["隔离变压器"]
V --> W["外部连接器"]
X["电源接口"] --> Y["反接保护"]
Y --> Z["过压钳位"]
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
点击下载：VBMB18R20S规格书
中文
English
