System and method of automatic calibration to maximize load current support of DC-DC converter operating in pulse-pairing mode
US11323029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-DC converter including converter circuitry, a voltage detector providing a low voltage signal, and pulse-pairing circuitry. The converter circuitry may be configured according to a buck or a boost configuration switching between a zero and peak current levels. The pulse-pairing circuitry includes a paired pulse generator, a load detector, and a maximum on timing controller. In response to the low voltage signal, the paired pulse generator activates an on signal for a pair of equal duration on pulses separated by a predetermined pulse separation interval. The on time periods are based on an adjustable time value and a peak current indication. The load detector provides a load adjust signal for adjusting the time value based on sampling the low voltage signal and an off time signal at the start of the second pulse. The maximum on timing controller adjusts the adjustable time value based on the load adjust signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.