Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators
USRE41037E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Apr 20, 2026 |
Classification
- Technology area (CPC —)General
Abstract
Switching regulator circuits and methods are provided for regulating output voltage that include an adjustable minimum peak inductor current level for Burst Mode in current-mode DC-DC regulators. Minimum peak inductor current level control is achieved during Burst Mode by allowing external control for adjusting the burst threshold level. A single pin can be used to distinguish between forced continuous and Burst Mode as well as set the burst threshold level during Burst Mode, or an alternate method of setting a variable burst threshold level can be implemented in which two pins are used, one for selecting the mode of operation and the other for setting the burst threshold level during Burst Mode. The above principles can be applied to both step-up and step-down regulator circuit configurations, as well as both synchronous switching regulators and non-synchronous switching regulators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.