Primary-side regulated current control system under LLC topology
US10008946B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2017 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Nov 19, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A primary-side regulated (PSR) current control system under a LLC topology includes a voltage polarity converting circuit, a current signal sampling circuit, a current cross-over detecting circuit, a zero current detecting circuit, and a current integrator circuit. The voltage polarity converting circuit obtains a voltage signal from the primary side of a LLC transformer and outputs a positive-voltage signal, and the current integrator circuit then obtains a current input signal outputted by the current signal sampling circuit, a zero-crossing current point outputted by the current cross-over detecting circuit, and a zero current condition outputted by the zero current detecting circuit, and raises the minimum current level of the current input signal to the zero-crossing current point based on the zero-crossing current point and the zero current condition, and generate and integrate a current integration waveform to create an output current, so the LLC transformer directly obtains, at the primary side, the output current for controlling secondary-side output load conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.