graph LR
subgraph "隔离式反激电源拓扑"
A[24VDC工业电源] --> B[输入滤波器]
B --> C[初级侧开关节点]
C --> D["VBM165R10 \n 隔离MOSFET"]
D --> E[初级地]
F[隔离变压器初级] --> C
G[隔离变压器次级] --> H[整流滤波]
H --> I[传感器输出12VDC]
J[PWM控制器] --> K[隔离驱动器]
K --> D
I -->|电压反馈| L[光耦隔离反馈]
L --> J
end
subgraph "本质安全电路参数"
M[开路电压Vo] --> N["< 标准限值"]
O[短路电流Io] --> P["< 标准限值"]
Q[储能电容Co] --> R["< 标准限值"]
S[储能电感Lo] --> T["< 标准限值"]
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
大电流报警驱动拓扑详图
graph TB
subgraph "大电流驱动桥臂"
A[MCU控制信号] --> B[光耦隔离]
B --> C[栅极驱动器]
C --> D["VBP16R90SE \n 驱动MOSFET"]
E[24VDC电源] --> F[驱动电源节点]
F --> D
D --> G[输出节点]
G --> H[报警负载]
H --> I[负载地]
J[续流二极管] --> G
J --> I
end
subgraph "多级驱动并联"
K["驱动通道1"] --> L[并联均流]
M["驱动通道2"] --> L
N["驱动通道3"] --> L
L --> O[公共输出]
subgraph O ["功率叠加输出"]
direction LR
OUT1[输出1]
OUT2[输出2]
OUT3[输出3]
end
end
subgraph "故障保护机制"
P[霍尔电流传感器] --> Q[电流检测]
Q --> R[比较器]
R --> S[过流保护]
T[温度传感器] --> U[温度检测]
U --> V[过热保护]
W[Watchdog] --> X[超时保护]
S --> Y[故障锁存]
V --> Y
X --> Y
Y --> Z[驱动关断]
Z --> D
end
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
本安侧管理与热控拓扑详图
graph LR
subgraph "本安侧电源管理与切换"
A[MCU GPIO] --> B[电平转换]
B --> C["VBA1808S \n 电源开关"]
D[本安电源5V] --> E[电源输入]
E --> C
C --> F[负载设备]
subgraph F ["可切换负载"]
direction TB
SENSOR[传感器]
COMM[通信模块]
LED[指示灯]
end
end
subgraph "三级热管理实施"
G["一级: 防爆外壳散热"] --> H["大电流MOSFET \n VBP16R90SE"]
I["二级: 模块散热片"] --> J["隔离MOSFET \n VBM165R10"]
K["三级: PCB敷铜散热"] --> L["本安侧MOSFET \n VBA1808S"]
M[温度传感器1] --> N[MCU温度监测]
O[温度传感器2] --> N
P[温度传感器3] --> N
N --> Q[热管理算法]
Q --> R[风扇PWM控制]
Q --> S[功率降额控制]
end
subgraph "电磁兼容与隔离"
T[信号输入] --> U[磁环抑制]
U --> V[屏蔽电缆]
W[数字接口] --> X[光电隔离]
X --> Y[本安区电路]
Z[电源端口] --> AA[共模扼流圈]
AA --> AB[π型滤波]
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style J fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
*To request free samples, please complete and submit the following information. Our team will review your application within 24 hours and arrange shipment upon approval. Thank you!
X
SN Check
***Serial Number Lookup Prompt**
1. Enter the complete serial number, including all letters and numbers.
2. Click Submit to proceed with verification.
The system will verify the validity of the serial number and its corresponding product information to help you confirm its authenticity.
If you notice any inconsistencies or have any questions, please immediately contact our customer service team. You can also call 400-655-8788 for manual verification to ensure that the product you purchased is authentic.