Hysteretic buck DC-DC converter
US9455626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Sep 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A buck switching regulator includes a feedback control circuit using a four-input comparator to regulate the output voltage to a substantially constant level with reduced voltage offset and with fast transient response. In some embodiments, the buck switching regulator uses the four-input comparator to compare a first feedback signal without ripple and a second feedback signal with injected ripple components to a reference level. The four-input comparator generates an output signal to control the switching of the power switches. The buck switching regulator generates an output voltage with increased accuracy and fast transient response. Furthermore, the buck switching regulator can be used with output capacitor having any value of ESR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.