Motor driving circuit
US9577566B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Aug 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor driving circuit is provided, which selects a Hall sensor or a Sensor-less controller to achieve the phase commutation of a magnetic pole of a motor through a hall positive terminal and a hall negative terminal of a hall control device. When the hall positive terminal and the hall negative terminal receive a first hall signal and a second hall signal generated by the Hall sensor, the motor driving circuit selects the Hall sensor and then accordingly drives the motor. When the hall positive terminal and the hall negative terminal are floating, or one of them receives a high-voltage, the motor driving circuit selects the sensor-less controller and then accordingly drives the motor. Accordingly, the motor driving circuit can select different sensing devices to achieve the phase commutation of the magnetic pole of the motor according to the motor characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.