Driving switching system applied to motors and method thereof
US9407191B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Sep 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/29
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a driving switching system, an H-bridge circuit includes a first P-type MOSFET, a first N-type MOSFET, a second P-type MOSFET and a second N-type MOSFET. The first N-type MOSFET connects to the first P-type MOSFET so as to have a first connection terminal. The second N-type MOSFET connects to the second P-type MOSFET so as to have a second connection terminal, wherein the first connection terminal and the second connection terminal are connected to a coil. A first and a second kickback voltage detection module respectively detect a first kickback voltage at the first connection terminal and a second kickback voltage at the second connection terminal. In the accompanying method, a first and a second driving module are selectively used to switch the first and second P-type MOSFET and the first and second N-type MOSFET once the first and second kickback voltages reach a first or a second threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.