Start-up circuit for voltage regulation circuit
US9281741B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Sep 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Among other things, techniques and systems are provided to pre-charge a node of a primary circuit, such as a voltage regulator or bandgap voltage reference, via a start-up circuit. The node is charged to a specified voltage during a pre-charge operation that occurs while the primary-circuit is powered-off. The pre-charge operation comprises discharging a voltage from the node during a first portion of the pre-charge operation and re-charging the node to the specified voltage during a second portion of the pre-charge operation. In some embodiments, the specified voltage is substantially equivalent to a switching voltage of a drive transistor of the primary circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.