Power supply device comprising several switched-mode power supply units that are connected in parallel
US7046524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Mar 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a power supply device having several switch-mode power supplies connected in parallel to supply at least one consuming unit, each switch-mode power supply generating an output current I0 and an output voltage U0(I0, RL) that is a function of the output current I0 and a load resistance RL, and having a control device for each switch-mode power supply, the control device having a first stage with a P element (54) that receives a P element input voltage which is derived from the output voltage U0(I0, RL), and generates a P element control voltage UVS, that is used to control the respective switch-mode power supply, the first stage being active when 0≦I0≦I0P, a second stage having a current reproduction circuit which reproduces the output current I0 of the respective switch-mode power supply and generates an output current control voltage UP which is used to control the respective switch-mode power supply, the second stage being active when I0P≦I0≦I0S, and a third stage having an amplifier circuit which amplifies a signal proportional to the output current I0 and generates an amplified output current control voltage m·US which is used to control the respective …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.