Synchronizing hiccup over-current protection of multiphase switching converters
US10848051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2017 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Oct 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiphase switching converter includes a first switching converter circuit including a power stage coupled to a DC voltage supply and a controller. The controller includes an over-current (OC) circuit that can detect an OC event and, upon detecting the OC event, set a command signal to a preset low value and provide a first hiccup signal. A synchronization circuit can generate a second hiccup signal based on the command signal of the OC circuit satisfying a first reference threshold value, and a sampled portion of an output voltage of the power stage satisfying a second reference threshold value. A hiccup timer can be triggered by one of the first hiccup signal or the second hiccup signal to start a hiccup pulse in response to being triggered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.