graph TB
subgraph "高效DC-DC同步Buck转换器"
A["48V输入"] --> B["输入滤波"]
B --> C["Buck控制器"]
C --> D["高侧驱动"]
D --> E["VBQF1202 \n 高侧N-MOS"]
E --> F["开关节点"]
F --> G["同步整流节点"]
G --> H["VBQF1202 \n 低侧N-MOS"]
H --> I["输出滤波"]
I --> J["12V输出"]
K["PWM控制器"] --> D
K --> L["低侧驱动"]
L --> H
J --> M["负载:主控MCU/AI模块"]
end
subgraph "通信模块智能供电管理"
N["12V输入"] --> O["LDO/DC-DC"]
O --> P["3.3V/5V逻辑电源"]
subgraph "独立供电开关阵列"
Q1["VBK2298 \n P-MOS"]
Q2["VBK2298 \n P-MOS"]
Q3["VBK2298 \n P-MOS"]
end
P --> R["MCU GPIO控制"]
R --> S["电平转换电路"]
S --> Q1
S --> Q2
S --> Q3
Q1 --> T["4G/5G模块电源"]
Q2 --> U["WiFi模块电源"]
Q3 --> V["以太网PHY电源"]
T --> W["通信天线"]
U --> X["无线连接"]
V --> Y["网络接口"]
end
subgraph "噪声抑制与EMC设计"
Z["π型滤波网络"] --> AA["通信电源路径"]
AB["磁珠隔离"] --> AC["敏感信号线"]
AD["高频去耦电容"] --> AE["开关节点"]
AF["屏蔽罩接地"] --> AG["射频模块"]
end
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
安全隔离与路径切换拓扑详图
graph LR
subgraph "高侧隔离开关控制"
A["12V/24V控制电源"] --> B["电平转换驱动"]
B --> C["VBI2201K \n P-MOS高侧开关"]
C --> D["感性负载"]
D --> E["续流二极管"]
E --> F["接地"]
G["MCU安全输出"] --> H["光耦隔离"]
H --> B
end
subgraph "多路隔离切换矩阵"
subgraph "开关通道1"
I1["VBI2201K P-MOS"]
J1["驱动电路"]
K1["接触器线圈1"]
end
subgraph "开关通道2"
I2["VBI2201K P-MOS"]
J2["驱动电路"]
K2["接触器线圈2"]
end
subgraph "开关通道3"
I3["VBI2201K P-MOS"]
J3["驱动电路"]
K3["安全互锁回路"]
end
subgraph "开关通道4"
I4["VBI2201K P-MOS"]
J4["驱动电路"]
K4["紧急停止继电器"]
end
L["控制逻辑板"] --> J1
L --> J2
L --> J3
L --> J4
J1 --> I1
J2 --> I2
J3 --> I3
J4 --> I4
I1 --> K1
I2 --> K2
I3 --> K3
I4 --> K4
end
subgraph "保护与吸收电路"
M["RC吸收网络"] --> N["开关管漏极"]
O["TVS保护"] --> P["栅极驱动芯片"]
Q["快速恢复二极管"] --> R["感性负载两端"]
S["过流检测"] --> T["比较器+锁存"]
T --> U["故障关断信号"]
U --> I1
U --> I2
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style I1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
辅助功能与传感器管理拓扑详图
graph TB
subgraph "传感器阵列智能供电"
A["3.3V系统电源"] --> B["电源分配网络"]
subgraph "独立电源开关"
C1["VBK2298 P-MOS"]
C2["VBK2298 P-MOS"]
C3["VBK2298 P-MOS"]
C4["VBK2298 P-MOS"]
end
D["MCU GPIO端口"] --> E["直驱控制(无需电平转换)"]
E --> C1
E --> C2
E --> C3
E --> C4
C1 --> F["温度传感器1-NTC"]
C2 --> G["温度传感器2-PT100"]
C3 --> H["霍尔电流传感器"]
C4 --> I["环境光/温湿度传感器"]
F --> J["ADC采样"]
G --> J
H --> J
I --> J
J --> K["MCU数据处理"]
end
subgraph "外设负载管理"
subgraph "风扇PWM控制"
L["VBK2298 P-MOS"]
M["PWM信号"]
N["电流检测"]
end
subgraph "指示灯控制"
O["VBK2298 P-MOS"]
P["RGB LED驱动"]
end
subgraph "报警器控制"
Q["VBK2298 P-MOS"]
R["声音报警器"]
end
S["外设管理MCU"] --> M
S --> P
S --> T["使能控制"]
T --> L
T --> O
T --> Q
M --> L
L --> U["冷却风扇"]
P --> O
O --> V["状态指示灯"]
T --> Q
Q --> R
end
subgraph "热管理与功耗优化"
W["温度监控数据"] --> X["动态功耗管理"]
X --> Y["负载开关调度"]
Y --> Z["按需供电策略"]
Z --> C1
Z --> C2
AA["环境温度"] --> AB["风扇调速算法"]
AB --> M
AC["系统负载率"] --> AD["电源模式切换"]
AD --> AE["休眠/唤醒控制"]
end
style C1 fill:#f3e5f5,stroke:#9c27b0,stroke-width:2px
style L fill:#f3e5f5,stroke:#9c27b0,stroke-width:2px
点击下载：VBI2201K规格书
中文
English
