Switching converter with plural converter stages having calibrated current uptake
US7759919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Mar 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching converter includes a control arrangement and multiple converter stages. The control arrangement generates a control signal dependent on the output voltage. Each converter stage includes an inductive storage element, a current measurement arrangement that detects a current across the inductive storage element and furnishes a current measuring signal proportional to this current, a pulse width modulator that receives the control signal and the current measuring signal and generates a PWM signal, and a driver circuit that applies the input voltage to the inductive storage element in dependence on the PWM signal. The current measurement arrangement of a second converter stage adjusts a proportionality factor between the current across the inductive storage element and the current measurement signal thereof, responsive to an adjustment signal that is dependent on a proportionality factor between a current across the inductive storage element and the current measuring signal of a first converter stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.