Precharge circuits and methods for DC-DC boost converters
US9214852B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses precharge circuits and methods for DC-DC boost converters. In one embodiment, a precharge method for a DC-DC boost converter having a current mirror circuit that includes a reference transistor and a power transistor, can include: (i) maintaining a reference current flowing through the reference transistor as substantially constant; (ii) maintaining a drain-source voltage of the reference transistor and a drain-source voltage of the power transistor as substantially equal; and (iii) obtaining a substantially constant mirror current by reflecting the reference current through the power transistor to operate as a precharging current of a precharge circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.