Fast transient response for switching regulators
US9667145B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2016 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Feb 9, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure describes apparatuses and techniques of fast transient response for switching power regulators. In some aspects, a transconductance load is connected to a feedback amplifier of a switching power regulator that is operating in a discontinuous mode. This can be effective to dampen an indication, provided by the feedback amplifier, of voltage at an output of the switching power regulator while the regulator provides current to a load. Based on the dampened indication of the voltage, a current draw of the load is detected that exceeds the current provided to the load. Responsive to detecting the excessive current of the load, the switching regulator is transitioned to a continuous mode to provide an increased amount of the current to the load. Alternately or additionally, the increased amount of current can be allowed to exceed a nominal current limit protection threshold by a predefined amount of current, for a predefined number of switching cycles, or for a predefined amount of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.