graph LR
subgraph "高效电机驱动链路"
A["电池输入 \n 3.0-4.2V"] --> B["输入滤波 \n 10μF+100nF"]
B --> C["VBQF2205 \n 驱动MOSFET"]
C --> D["电流采样 \n 20mΩ"]
D --> E["微型电机 \n 3A峰值"]
F["MCU PWM"] --> G["电平转换"]
G --> H["栅极驱动"]
H --> C
I["RC缓冲网络"] --> C
E --> J["反峰吸收"]
J --> K["肖特基二极管"]
end
subgraph "分级电源管理"
L["主电源输入"] --> M["VB5460 \n PMOS开关"]
M --> N["无线模块供电 \n 3.3V"]
L --> O["VB5460 \n NMOS开关"]
O --> P["传感器供电 \n 3.3V"]
Q["MCU GPIO"] --> R["使能控制"]
R --> M
R --> O
S["去耦网络"] --> N
S --> P
end
subgraph "功耗优化机制"
T["待机模式"] --> U["关闭所有负载开关"]
T --> V["MCU深度睡眠"]
W["动作唤醒"] --> X["开启必要负载"]
X --> Y["执行驱动"]
Y --> Z["快速返回睡眠"]
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style M fill:#fff3e0,stroke:#ff9800,stroke-width:2px
接口保护与信号调理详图
graph TB
subgraph "IO保护与电平转换"
A["外部按键"] --> B["串联电阻 \n 1kΩ"]
B --> C["VBI2260 \n 保护开关"]
C --> D["MCU GPIO"]
E["天线接口"] --> F["阻抗匹配"]
F --> G["VBI2260 \n ESD保护"]
G --> H["RF模块"]
I["显示接口"] --> J["电平转换"]
J --> K["VBI2260 \n 驱动"]
K --> L["显示屏"]
M["TVS阵列"] --> A
M --> E
M --> I
end
subgraph "电池保护电路"
N["电池正极"] --> O["VB5460 \n 防反接"]
O --> P["主电源"]
Q["过放检测"] --> R["电压比较器"]
R --> S["关断信号"]
S --> O
T["过流保护"] --> U["电流比较器"]
U --> S
end
subgraph "信号完整性设计"
V["高速信号"] --> W["阻抗控制走线"]
X["敏感模拟"] --> Y["屏蔽与隔离"]
Z["电源噪声"] --> AA["π型滤波"]
AB["时钟信号"] --> AC["包地处理"]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style O fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与可靠性设计详图
graph LR
subgraph "微型化散热设计"
A["VBQF2205 \n DFN8封装"] --> B["散热焊盘"]
B --> C["PCB接地层"]
D["散热过孔"] --> C
E["宽铜箔走线"] --> F["电源路径"]
G["热敏电阻"] --> H["温度监测"]
H --> I["MCU ADC"]
end
subgraph "可靠性增强机制"
J["瞬态电流"] --> K["去耦电容阵列"]
L["电压跌落"] --> M["大容量储能"]
N["ESD事件"] --> O["多级保护"]
P["机械振动"] --> Q["加固焊盘"]
R["湿度渗透"] --> S["三防涂层"]
end
subgraph "故障诊断链"
T["电池电压"] --> U["ADC监测"]
V["驱动电流"] --> W["采样放大"]
X["器件温度"] --> Y["NTC监测"]
U --> Z["故障判断"]
W --> Z
Y --> Z
Z --> AA["保护动作"]
AA --> AB["状态上报"]
end
style A fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style O fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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