Current mode buck converter with fixed PWM/PFM boundary
US8106642B2 · kind B2 · utility
10Cited by
3References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2010 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current mode buck converter is disclosed. The buck converter operates in a pulse width modulation (PWM) mode or a pulse frequency modulation (PFM) mode. To prevent an output inductor with various probable magnitudes from varying a decision boundary between the PWM mode and the PFM mode, the buck converter adaptively adjusts a triggering condition for the pulse frequency modulation mode according to an average value of an inductor current of the output inductor or AC components of the inductor current and a slope compensation current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.