Apparatus for driving actuator
US10277151B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Oct 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0356
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for driving an actuator includes a driving coil configured to generate magnetic force depending on driving signals, a control circuit configured to provide a first control signal and a second control signal, and a driving circuit including a high-side switch and a low-side switch connected to the driving coil, the high-side switch and the low-side switch configured to generate the driving signals based on the first and second control signals, respectively, and to provide the driving signals to the driving coil, wherein the control circuit is further configured to control the driving circuit so that the high-side switch is operated as a current source using the first control signal, and to control the driving circuit so that the low-side switch is driven in a pulse width modulation (PWM) scheme using the second control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.