graph TB
subgraph "三相逆变桥驱动"
A[48V直流输入] --> B[直流母线电容]
B --> C[上桥臂开关]
B --> D[下桥臂开关]
subgraph "三相桥臂配置"
phaseU_U["VBGP1103 \n 上桥U相"]
phaseU_L["VBGP1103 \n 下桥U相"]
phaseV_U["VBGP1103 \n 上桥V相"]
phaseV_L["VBGP1103 \n 下桥V相"]
phaseW_U["VBGP1103 \n 上桥W相"]
phaseW_L["VBGP1103 \n 下桥W相"]
end
C --> phaseU_U
C --> phaseV_U
C --> phaseW_U
D --> phaseU_L
D --> phaseV_L
D --> phaseW_L
phaseU_U --> E[U相输出]
phaseU_L --> E
phaseV_U --> F[V相输出]
phaseV_L --> F
phaseW_U --> G[W相输出]
phaseW_L --> G
E --> H[伺服电机U相]
F --> I[伺服电机V相]
G --> J[伺服电机W相]
end
subgraph "栅极驱动与保护"
K[PWM控制器] --> L[栅极驱动IC]
L --> M[驱动信号隔离]
M --> phaseU_U
M --> phaseU_L
M --> phaseV_U
M --> phaseV_L
M --> phaseW_U
M --> phaseW_L
subgraph "保护电路"
N[电流检测电阻]
O[RC吸收网络]
P[TVS保护]
Q[死区时间控制]
end
N --> R[比较器]
R --> S[过流保护]
S --> L
O --> phaseU_U
O --> phaseU_L
P --> L
Q --> K
end
subgraph "散热管理"
T[温度传感器] --> U[MCU]
U --> V[PWM风扇控制]
V --> W[强制风冷散热器]
W --> phaseU_U
W --> phaseV_U
W --> phaseW_U
end
style phaseU_U fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
DC-DC电源模块拓扑详图
graph LR
subgraph "LLC谐振变换器拓扑"
A[400VDC高压母线] --> B[输入滤波电容]
B --> C["VBE17R11S \n 初级侧开关管"]
C --> D[LLC谐振腔]
D --> E[高频变压器初级]
E --> F[初级侧地]
subgraph "同步整流侧"
G[变压器次级] --> H[同步整流MOSFET]
H --> I[输出滤波电感]
I --> J[输出滤波电容]
J --> K[48V直流输出]
end
end
subgraph "控制与反馈"
L[LLC控制器] --> M[栅极驱动器]
M --> C
N[同步整流控制器] --> O[同步整流驱动器]
O --> H
P[输出电压采样] --> Q[误差放大器]
Q --> L
R[初级电流检测] --> S[过流保护]
S --> L
end
subgraph "散热设计"
T[PCB大面积敷铜] --> C
U[小型铝散热片] --> C
V[温度监测] --> W[降额控制]
W --> L
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能I/O与执行器控制拓扑详图
graph TB
subgraph "双MOSFET H桥驱动"
A[24V电源输入] --> B[电源滤波]
B --> C[高端P-MOSFET]
B --> D[高端N-MOSFET]
subgraph "VBQA5325互补配置"
Q_P1["VBQA5325(P) \n 高端左臂"]
Q_N1["VBQA5325(N) \n 低端左臂"]
Q_P2["VBQA5325(P) \n 高端右臂"]
Q_N2["VBQA5325(N) \n 低端右臂"]
end
C --> Q_P1
C --> Q_P2
D --> Q_N1
D --> Q_N2
Q_P1 --> E[H桥输出A]
Q_N1 --> E
Q_P2 --> F[H桥输出B]
Q_N2 --> F
E --> G[执行器正端]
F --> H[执行器负端]
end
subgraph "MCU控制接口"
I[MCU GPIO] --> J[电平转换器]
J --> K[死区时间发生器]
K --> L[高端驱动器]
K --> M[低端驱动器]
L --> Q_P1
L --> Q_P2
M --> Q_N1
M --> Q_N2
end
subgraph "保护与续流"
N[电流检测电阻] --> O[比较器]
O --> P[快速关断]
P --> K
subgraph "续流路径"
Q[体二极管续流]
R[外部肖特基二极管]
end
Q --> Q_P1
Q --> Q_P2
R --> Q_N1
R --> Q_N2
end
subgraph "紧凑布局设计"
S[DFN8封装] --> Q_P1
S --> Q_N1
T[DFN8封装] --> Q_P2
T --> Q_N2
U[高密度PCB布局] --> S
U --> T
end
style Q_P1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q_N1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBGP1103规格书
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