Dual mode power supply
US6774508B2 · kind B2 · utility
50Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jun 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery (102) powers a wireless telephone's power amplifier (106) through a Switch Mode Power Supply (SMPS) (104). The SMPS has a capacity lower than the maximum power requirements of the amplifier. When a controller (116) senses that an amplifier power-requirement threshold has been exceeded, it closes a switch (114) parallel to the SMPS, allowing power to flow from the battery to the amplifier without passing through the SMPS. This architecture allows the use of a smaller SMPS, and eliminates SMPS-generated noise to the amplifier when the amplifier is least able to tolerate such noise, namely, under high power conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.