graph LR
subgraph "輸入保護與整流"
A["100-240VAC輸入"] --> B["EMI濾波器"]
B --> C["壓敏電阻+TVS"]
C --> D["整流橋"]
D --> E["直流母線電容"]
end
subgraph "反激式開關電源"
E --> F["開關節點"]
F --> G["VBN185R04 \n 850V/4.1A"]
G --> H["高頻變壓器初級"]
H --> I["初級地"]
subgraph "RCD鉗位"
J["RCD緩衝電路"] --> G
end
H --> K["變壓器次級"]
K --> L["同步整流"]
L --> M["輸出濾波"]
M --> N["多路直流輸出 \n +5V/+12V/+15V"]
O["PWM控制器"] --> P["柵極驅動器"]
P --> G
end
subgraph "輔助控制"
N --> Q["LDO穩壓器"]
Q --> R["模擬電路電源"]
Q --> S["數字電路電源"]
T["電壓回饋"] --> O
end
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
打擊墊驅動通道拓撲詳圖
graph TB
subgraph "感測器與信號調理"
A["打擊墊感測器"] --> B["電荷放大器"]
B --> C["可編程增益放大器"]
C --> D["抗混疊濾波器"]
D --> E["高速ADC"]
E --> F["MCU數字介面"]
end
subgraph "驅動與功率級"
G["12V驅動電源"] --> H["驅動節點"]
subgraph "MOSFET驅動陣列"
I["VBN1402 \n 40V/150A"]
end
H --> I
I --> J["負載輸出"]
J --> K["電流採樣電阻 \n 2mΩ"]
K --> L["驅動地"]
F --> M["高速柵極驅動器 \n 5A峰值"]
M --> I
end
subgraph "保護與回饋"
N["肖特基二極體"] --> I
O["12V齊納管"] --> M
P["電流檢測放大器"] --> K
P --> Q["比較器+鎖存"]
Q --> R["故障信號"]
R --> S["MCU中斷"]
end
subgraph "多通道擴展"
T["通道1"] --> U["8通道複用器"]
V["通道2"] --> U
W["通道8"] --> U
U --> X["MIDI編碼器"]
X --> Y["MIDI輸出"]
end
style I fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
信號調理與熱管理拓撲詳圖
graph LR
subgraph "雙路信號開關應用"
A["5V輔助電源"] --> B["VBI3328雙N-MOS"]
subgraph B ["VBI3328內部結構"]
direction LR
IN1[柵極1]
IN2[柵極2]
S1[源極1]
S2[源極2]
D1[漏極1]
D2[漏極2]
end
C["MCU GPIO"] --> D["電平轉換器"]
D --> IN1
D --> IN2
S1 --> E["π型濾波器 \n 10μH+10μF"]
S2 --> F["LED驅動電路"]
E --> G["ADC基準源"]
F --> H["狀態指示燈"]
end
subgraph "三級散熱系統"
I["一級散熱區"] --> J["垂直鰭片散熱器"]
J --> K["VBN185R04主MOSFET"]
L["二級散熱區"] --> M["鋁基板/厚銅箔"]
M --> N["VBN1402驅動陣列"]
O["三級散熱區"] --> P["2oz銅箔+散熱過孔"]
P --> Q["VBI3328信號開關"]
R["溫度感測器"] --> S["MCU ADC"]
S --> T["PWM控制邏輯"]
T --> U["風扇速度控制"]
end
subgraph "EMC與信號完整性"
V["開關節點"] --> W["RC緩衝電路 \n 100Ω+470pF"]
X["敏感信號線"] --> Y["遮罩雙絞線"]
Z["數字電源"] --> AA["磁珠+去耦電容"]
AB["功率地"] --> AC["星型接地點"]
AD["模擬地"] --> AC
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style K fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style N fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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