Motor-driven
Chain Saw
Key parameters
| Item | Parameters |
|---|---|
| Motor type | DC brushless motor |
| Current sampling | 1-shunt current sensing |
| Speed range | 500 ~ 30,000 rpm |
| Initial angle detection | 2-phase voltage vectors pulses injection |
| Phase change timing detection | BEMF zero-crossing detection with ADC/Comparator |
| Soft-start function | Full-speed rising time < 0.4s (soft startup disabled), 1s (soft startup enabled) |
| Protection mechanism | Stall, overcurrent, overvoltag and undervoltage protection |
Block diagram
