graph LR
subgraph "三相PFC升压级"
A[三相400VAC输入] --> B[EMI滤波器]
B --> C[三相整流桥]
C --> D[PFC升压电感]
D --> E[PFC开关节点]
subgraph "PFC MOSFET桥臂"
F1["VBL16R15S \n 600V/15A"]
F2["VBL16R15S \n 600V/15A"]
F3["VBL16R15S \n 600V/15A"]
end
E --> F1
E --> F2
E --> F3
F1 --> G[高压直流母线]
F2 --> G
F3 --> G
H[PFC控制器] --> I[隔离栅极驱动器]
I --> F1
I --> F2
I --> F3
G -->|电压反馈| H
end
subgraph "LLC谐振变换级"
G --> J[LLC谐振腔]
J --> K[高频变压器初级]
K --> L[LLC开关节点]
subgraph "LLC半桥MOSFET"
M1["VBL16R15S \n 600V/15A"]
M2["VBL16R15S \n 600V/15A"]
end
L --> M1
L --> M2
M1 --> N[初级地]
M2 --> N
O[LLC控制器] --> P[半桥驱动器]
P --> M1
P --> M2
K -->|电流反馈| O
end
style F1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
低压DC-DC与负载开关拓扑
graph TB
subgraph "同步整流Buck变换器"
A[48V-96V输入] --> B[输入滤波]
B --> C[同步整流节点]
subgraph "同步整流MOSFET对"
D["VBGL1121N \n 120V/70A"]
E["VBGL1121N \n 120V/70A"]
end
C --> D
C --> E
D --> F[输出电感]
E --> G[输出电容]
F --> H[12V/24V输出]
G --> H
I[同步整流控制器] --> J[低内阻驱动器]
J --> D
J --> E
H -->|电压反馈| I
end
subgraph "智能负载管理通道"
K[MCU GPIO] --> L[电平转换电路]
L --> M["VBI1101MF \n 输入控制"]
subgraph "负载开关配置"
N["风扇控制 \n VBI1101MF"]
O["通信模块 \n VBI1101MF"]
P["计费单元 \n VBI1101MF"]
Q["使能控制 \n VBI1101MF"]
end
M --> N
M --> O
M --> P
M --> Q
R[12V辅助电源] --> S[电源分配]
S --> N
S --> O
S --> P
S --> Q
N --> T[散热风扇]
O --> U[通信模块]
P --> V[计费显示]
Q --> W[功率模块使能]
end
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护电路拓扑
graph LR
subgraph "分级散热系统"
A["一级散热: 主散热器"] --> B["PFC/LLC MOSFET \n VBL16R15S"]
C["二级散热: PCB敷铜"] --> D["同步整流MOSFET \n VBGL1121N"]
E["三级散热: 自然对流"] --> F["辅助MOSFET \n VBI1101MF"]
G["温度传感器阵列"] --> H[MCU]
H --> I[PWM控制算法]
I --> J[风扇速度控制]
I --> K[降额管理]
J --> L[强制风冷系统]
K --> B
K --> D
end
subgraph "电气保护网络"
M["输入浪涌保护"] --> N["VBI1101MF \n 缓启动控制"]
O["RCD缓冲电路"] --> P["PFC MOSFET"]
Q["RC吸收电路"] --> R["LLC MOSFET"]
S["TVS防护阵列"] --> T["栅极驱动芯片"]
U["电流检测电路"] --> V["高速比较器"]
V --> W["故障锁存器"]
W --> X["全局关断信号"]
X --> Y[驱动禁止]
Y --> P
Y --> R
Z["NTC热敏电阻"] --> H
H --> X
end
subgraph "EMI抑制措施"
AA["输入滤波"] --> AB["共模电感"]
AB --> AC["差模电容"]
AD["功率回路布局"] --> AE["最小寄生电感"]
AF["屏蔽与接地"] --> AG["EMC优化"]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBL16R15S规格书
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