Current mode buck-boost DC-DC controller
US9071140B2 · kind B2 · utility
1Cited by
1References
10Claims
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Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1582
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current mode DC-DC controller operates with high efficiency even when the input and output voltages are close. Switches selectively connecting an input, ground and an output to inductor terminals are controlled in a buck/boost region to alternate between operation as a buck converter and operation as a boost converter. The number of switches repeatedly changing state is thus reduced, lowering switching losses and improving conversion efficiency. Current through the inductor during operation is sensed and compared to an error value to control switching from buck mode operation to boost mode operation and back.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.