Motor drive circuit
US7049772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2004 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Sep 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor drive circuit which have a first source-side transistor and a first sink-side transistor connected in series; a second source-side transistor and a second sink-side transistor connected in series; and a control circuit supplying the first source-side transistor, the first sink-side transistor, the second source-side transistor, and the second sink-side transistor with control signals for supplying a current in one direction or the opposite direction to a coil connected between a connection point of the first source-side transistor and the first sink-side transistor and a connection point of the second source-side transistor and the second sink-side transistor based on a plurality of input signals that complementarily change at a predetermined frequency. The control circuit, during each time period between timings of complementary switching of the plurality of input signals, outputs control signals for turning on and off the transistors in a predetermined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.