graph TB
subgraph "PFC升压电路"
A["交流输入 \n 85-265VAC"] --> B["EMI滤波器 \n 共模电感+X电容"]
B --> C["整流桥堆"]
C --> D["PFC升压电感"]
D --> E["PFC开关节点"]
E --> F["VBM17R15S \n 700V/15A/TO-220"]
F --> G["高压直流母线 \n 400VDC"]
H["PFC控制器"] --> I["栅极驱动器"]
I --> F
G -->|电压反馈| H
J["输入电压检测"] --> H
end
subgraph "辅助电源系统"
G --> K["反激变换器"]
subgraph K ["多路输出"]
direction LR
PRIMARY["变压器初级"]
12V_OUT["12V绕组"]
5V_OUT["5V绕组"]
end
PRIMARY --> L["反激控制器"]
PRIMARY --> M["VBM17R15S \n 开关管"]
12V_OUT --> N["12V整流滤波"]
5V_OUT --> O["5V整流滤波"]
N --> P["12V辅助电源"]
O --> Q["5V控制电源"]
P --> R["驱动芯片供电"]
Q --> S["MCU供电"]
end
subgraph "待机功耗优化"
T["轻载模式"] --> U["频率折返控制"]
V["谷底开关"] --> W["降低开关损耗"]
X["低静态电流设计"] --> Y["待机功耗<0.5W"]
end
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
压缩机变频驱动拓扑详图
graph LR
subgraph "三相逆变桥臂结构"
A["直流母线 \n 400VDC"] --> B["母线电容组 \n 电解+薄膜电容"]
B --> C["U相上桥臂"]
B --> D["V相上桥臂"]
B --> E["W相上桥臂"]
C --> F["VBP155R09 \n 550V/9A/TO-247"]
D --> G["VBP155R09 \n 550V/9A/TO-247"]
E --> H["VBP155R09 \n 550V/9A/TO-247"]
F --> I["U相输出"]
G --> J["V相输出"]
H --> K["W相输出"]
L["U相下桥臂"] --> I
M["V相下桥臂"] --> J
N["W相下桥臂"] --> K
L --> O["功率地"]
M --> O
N --> O
end
subgraph "驱动与保护"
P["MCU"] --> Q["变频控制算法"]
Q --> R["PWM信号发生器"]
R --> S["三相驱动信号"]
S --> T["栅极驱动器"]
subgraph T ["三相驱动IC"]
direction LR
U_DRV["U相驱动"]
V_DRV["V相驱动"]
W_DRV["W相驱动"]
end
U_DRV --> F
U_DRV --> L
V_DRV --> G
V_DRV --> M
W_DRV --> H
W_DRV --> N
end
subgraph "电流检测与保护"
I --> U["电流传感器"]
J --> U
K --> U
U --> V["过流保护电路"]
V --> W["故障信号"]
W --> P
W --> T
X["直流电压检测"] --> Y["过压/欠压保护"]
Y --> W
end
subgraph "低温启动优化"
Z["负压关断"] --> AA["防止桥臂直通"]
AB["软启动控制"] --> AC["缓慢建立电流"]
AD["预励磁控制"] --> AE["-25℃可靠启动"]
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
热管理与智能控制拓扑详图
graph TB
subgraph "三级热管理架构"
A["一级:强制风冷"] --> B["大型散热器+风扇"]
B --> C["压缩机驱动MOSFET \n TO-247封装"]
D["二级:防护散热"] --> E["带涂层散热片"]
E --> F["PFC MOSFET \n TO-220封装"]
G["三级:自然散热"] --> H["PCB敷铜+风道"]
H --> I["负载开关MOSFET \n SOP8封装"]
end
subgraph "温度监测网络"
J["排气温度传感器"] --> K["MCU"]
L["盘管温度传感器"] --> K
M["环境温度传感器"] --> K
N["MOSFET温度检测"] --> K
K --> O["温度保护算法"]
O --> P["过热降频"]
O --> Q["过温关断"]
O --> R["智能除霜控制"]
end
subgraph "智能负载管理"
S["MCU GPIO"] --> T["电平转换"]
T --> U["负载开关控制"]
subgraph V ["多路负载开关"]
direction LR
FAN_SW["风机开关: VBA1606"]
VALVE_SW["阀件开关: VBA1606"]
PUMP_SW["水泵开关: VBA1606"]
AUX_SW["辅助开关: VBA1606"]
end
U --> FAN_SW
U --> VALVE_SW
U --> PUMP_SW
U --> AUX_SW
FAN_SW --> W["室外风机 \n PWM调速"]
VALVE_SW --> X["四通换向阀 \n 电子膨胀阀"]
PUMP_SW --> Y["循环水泵"]
end
subgraph "EMC与可靠性设计"
Z["磁环+屏蔽线"] --> AA["变频输出滤波"]
AB["共模电感+X电容"] --> AC["输入EMI抑制"]
AD["三防漆处理"] --> AE["PCB防潮保护"]
AF["金属机壳接地"] --> AG["电磁屏蔽"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style FAN_SW fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBP155R09规格书
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