graph LR
subgraph "整流滤波级"
A[220VAC输入] --> B[EMI滤波器]
B --> C[整流桥]
C --> D[电解电容阵列]
D --> E[直流母线 \n ~400VDC]
end
subgraph "全桥逆变级"
E --> F[上桥臂A]
E --> G[上桥臂B]
subgraph F ["VBQF1101N"]
F_IN[栅极]
F_OUT[漏极]
F_SRC[源极]
end
subgraph G ["VBQF1101N"]
G_IN[栅极]
G_OUT[漏极]
G_SRC[源极]
end
subgraph H ["VBQF1101N \n 下桥臂A"]
H_IN[栅极]
H_OUT[漏极]
H_SRC[源极]
end
subgraph I ["VBQF1101N \n 下桥臂B"]
I_IN[栅极]
I_OUT[漏极]
I_SRC[源极]
end
F_SRC --> J[输出节点A]
H_OUT --> J
G_SRC --> K[输出节点B]
I_OUT --> K
H_SRC --> L[功率地]
I_SRC --> L
end
subgraph "LLC谐振腔"
J --> M[谐振电感Lr]
K --> M
M --> N[谐振电容Cr]
N --> O[变压器初级]
O --> P[励磁电感Lm]
P --> Q[参考地]
end
subgraph "加热线圈"
O --> R[加热线圈盘]
R --> S[电磁场]
S --> T[锅具负载]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style H fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
驱动与智能控制拓扑详图
graph TB
subgraph "半桥驱动电路"
A[MCU PWM输出] --> B[电平转换]
B --> C[半桥驱动芯片]
C --> D[高侧驱动输出]
C --> E[低侧驱动输出]
subgraph "互补MOSFET对"
F["VBQF2205 \n P-MOSFET"]
G["VBQF1306 \n N-MOSFET"]
end
D --> F
E --> G
VCC_12V[12V电源] --> H[自举电路]
H --> C
F --> I[驱动输出]
G --> I
end
subgraph "智能负载管理"
J[MCU GPIO] --> K[电平转换]
K --> L["VB3222A通道1"]
K --> M["VB3222A通道2"]
subgraph L ["VB3222A 双N-MOS"]
direction LR
L_IN1[栅极1]
L_IN2[栅极2]
L_S1[源极1]
L_S2[源极2]
L_D1[漏极1]
L_D2[漏极2]
end
subgraph M ["VB3222A 双N-MOS"]
direction LR
M_IN1[栅极1]
M_IN2[栅极2]
M_S1[源极1]
M_S2[源极2]
M_D1[漏极1]
M_D2[漏极2]
end
VCC_12V --> L_D1
VCC_12V --> L_D2
VCC_12V --> M_D1
VCC_12V --> M_D2
L_S1 --> N[负载1:风扇]
L_S2 --> O[负载2:显示]
M_S1 --> P[负载3:通信]
M_S2 --> Q[负载4:蜂鸣器]
N --> R[地]
O --> R
P --> R
Q --> R
end
subgraph "保护与检测"
S[电流采样电阻] --> T[运放调理]
T --> U[ADC输入]
U --> MCU
V[母线电压分压] --> W[电压检测]
W --> MCU
X[温度传感器] --> Y[温度检测]
Y --> MCU
Z[过流比较器] --> FAULT[故障信号]
FAULT --> C
FAULT --> MCU
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style G fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style M fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与EMC拓扑详图
graph LR
subgraph "三级散热系统"
A["一级: 液冷板/强风冷"] --> B["主功率MOSFET \n VBQF1101N"]
C["二级: PCB敷铜+风冷"] --> D["驱动MOSFET \n VBQF2205/VBQF1306"]
E["三级: 自然对流"] --> F["控制芯片 \n VB3222A/MCU"]
G[温度传感器网络] --> H[MCU]
H --> I[PWM风扇控制]
H --> J[液冷泵控制]
I --> K[散热风扇]
J --> L[液冷泵]
end
subgraph "EMC滤波网络"
M[电源输入] --> N[共模电感]
N --> O[X电容]
O --> P[差模电感]
P --> Q[Y电容]
Q --> R[整流桥]
S[直流母线] --> T[高频薄膜电容]
U[功率回路] --> V[最小环路面积布局]
end
subgraph "电气保护网络"
W["RCD吸收 \n 47Ω+1nF+FRD"] --> X["主功率管VDS"]
Y["RC缓冲 \n 栅极驱动"] --> Z["MOSFET栅极"]
AA["TVS阵列 \n 电源端"] --> BB["驱动芯片VCC"]
CC["肖特基二极管 \n 体二极管保护"] --> DD["同步整流"]
EE["过流检测 \n Desat/采样"] --> FF["快速关断<1μs"]
FF --> X
FF --> Z
end
subgraph "故障诊断机制"
GG[过流保护] --> HH[硬件比较器]
II[过温保护] --> JJ[双重NTC监测]
KK[锅具检测] --> LL[脉冲计数/相位判断]
MM[波形畸变监测] --> NN[元件老化预测]
HH --> OO[故障锁存]
JJ --> OO
LL --> PP[安全互锁]
OO --> QQ[系统关断]
PP --> QQ
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
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