Protection for switched step up/step down regulators
US7365525B2 · kind B2 · utility
9Cited by
30References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1582
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A four switch voltage converter is regulated for buck mode and boost mode under constant frequency valley-peak current mode control. Protection circuits are responsive to output voltage and regulator current to prevent excessive current that otherwise might result from abnormally low output voltage short circuit, or spurious switching abnormalities during low duty cycle operation. The regulator control circuit is responsive to the protection circuits to automatically connect a regulator inductor between a common potential and the output to limit current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.