graph LR
subgraph "一級保護:入口泄放"
A["雷電感應浪湧 \n 1kV-10kV"] --> B["氣體放電管 \n 8/20μs波形"]
B --> C["壓敏電阻陣列 \n MOV"]
C --> D["泄放控制節點"]
D --> E["VBFB165R08S \n 650V/8A"]
E --> F["主接地排 \n 低阻抗"]
G["浪湧檢測IC"] --> H["比較器電路"]
H --> I["柵極驅動器"]
I --> E
end
subgraph "二級保護:母線鉗位"
J["48V直流母線"] --> K["TVS二極體 \n 瞬態抑制"]
K --> L["泄放觸發點"]
L --> M["VBL7601 \n 60V/200A"]
M --> N["專用接地排"]
O["電壓採樣"] --> P["快速比較器"]
P --> Q["大電流驅動器"]
Q --> M
R["溫度感測器"] --> S["過溫保護"]
S --> Q
end
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
直流母線大電流保護拓撲詳圖
graph TB
subgraph "48V直流母線保護"
A["DC+ 48V"] --> B["母線電容組"]
B --> C["TVS保護陣列"]
C --> D["泄放通路節點"]
subgraph "主泄放開關"
E["VBL7601 \n N-MOSFET"]
F["柵極端子"]
G["源極端子"]
H["漏極端子"]
end
D --> H
G --> I["輸出節點"]
I --> J["電流採樣電阻 \n 1mΩ"]
J --> K["接地銅排 \n 低電感"]
F --> L["驅動信號"]
L --> M["門極驅動IC \n 大電流能力"]
N["控制邏輯"] --> M
subgraph "熱管理"
O["散熱器基板"] --> P["導熱墊片"]
P --> E
Q["溫度感測器"] --> R["MCU ADC"]
R --> S["PWM風扇控制"]
S --> T["冷卻風扇"]
end
subgraph "保護電路"
U["RC緩衝網路"] --> E
V["電流限制電路"] --> E
W["SOA保護"] --> M
end
end
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style M fill:#fce4ec,stroke:#e91e63,stroke-width:2px
隔離接地切換拓撲詳圖
graph LR
subgraph "智能接地切換系統"
A["-48V通信電源"] --> B["電源輸入節點"]
subgraph "高側P-MOS開關"
C["VBMB2609 \n P-MOSFET"]
D["源極端子 \n 連接-48V"]
E["漏極端子 \n 輸出端"]
F["柵極端子 \n 控制端"]
end
B --> D
E --> G["負載電路"]
G --> H["接地參考點"]
subgraph "控制與驅動"
I["MCU GPIO"] --> J["電平轉換電路"]
J --> K["光耦隔離器"]
K --> L["柵極驅動"]
L --> F
M["狀態回饋"] --> I
end
subgraph "接地選擇網路"
H --> N["接地選擇開關"]
N --> O["接地排A \n 主接地"]
N --> P["接地排B \n 備份接地"]
Q["接地故障檢測"] --> R["電流感測器"]
R --> I
end
subgraph "保護功能"
S["過流保護"] --> T["快速關斷"]
T --> L
U["絕緣監測"] --> V["隔離報警"]
V --> I
end
end
style C fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style I fill:#fce4ec,stroke:#e91e63,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.