Switching converter systems with isolating digital feedback loops
US8908390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2013 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33546
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching converter system includes a feedback path with at least one comparator arranged to provide a digital error signal in response to a comparison of an output voltage to a reference voltage. A first isolation channel can be configured to isolatably transport a clock signal to digitally gate the error signal, and a second isolation channel can be configured to isolatably transport the error signal. A controller can be coupled to the first and second isolation channels and configured to control a duty cycle in response to the error signal. A transformer is preferably inserted into the first and second isolation channels to enhance isolation and the first and second isolation channels respectively can include first and second digital gates that each have an output port coupled to an input port of the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.