Battery charger voltage control method for instant boot-up
US9153987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | May 5, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery charger voltage control method dynamically adjusts the system voltage generated by a battery charger circuit based on the operating conditions to ensure that sufficient power is supplied to power up the circuitry of the electronic device when the battery charger circuit is connected to a current-limited power source and the battery of the electronic device is deeply depleted or is missing. In embodiments of the present invention, the battery charger voltage control method sets the system voltage to an elevated voltage value to maximize the energy transfer from the power source to the circuitry of the electronic device. In this manner, the battery charger voltage control method enables a near instant boot-up of the electronic device, even under the operating conditions where the battery of the electronic device is deeply depleted or missing and the switching battery charger circuit can only receive power from a current-limited power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.