Driver circuit supplying positive and negative voltages and control circuit and control method thereof
US10420179B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2018 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Nov 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver circuit supplies a positive voltage and a negative voltage to a load. The driver circuit includes: a positive power conversion circuit, coupled to the load, and generating the positive voltage according to an input voltage; a negative power conversion circuit, coupled to the positive power conversion circuit and the load, and generating the negative voltage according to the positive voltage; and a headroom adaptive adjustment circuit, coupled to the positive power conversion circuit and the load, and generating an adjustment signal according to one or more of a load current flowing through the load, the positive voltage Vp and the negative voltage Vn. The adjustment signal is sent to the positive power conversion circuit to adjust a regulation target of the positive voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.