Patents
US 12689302 B2: Piece-wise linear control system for a resonant converter
- Granted
- 2026-07-21
- Filed
- 2024-04-30 application 18650528
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A control system controls an inductor-inductor-capacitor (LLC) converter according to a switching method that tunes the output power of the LLC converter based on the required power to be supplied to an output load coupled to the LLC converter. The tuning of the output power is based in part on changing the duty cycle of a switching module. In addition, the output power is adjustable by changing a frequency of switching (e.g., a switching cycle of the switching module output). The control system is capable of adjusting amplitude and changing rising slope of a current supplied to the output load by changing the duty cycle and switching cycle of the switching. A piece-wise linear control method is achieved by controlling the duty cycle and switching cycle differently when the input voltage is lower than a crossover voltage than when the input voltage is higher than the crossover voltage.
Source: PTBLXML, file of 2026-07-21 (ipgb20260721.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Fluke Corporation 660 patents | US company or organization | Everett, WA | FLUKE CORPORATION State business registration EXACT high confidence: identical full name and state | PTBLXML, file of 2026-07-21 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jeffrey D. Graw | Woellersdorf, AT | 2 | PTBLXML, file of 2026-07-21 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02M | Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; conversion of dc or ac input power into surge output power; control or regulation thereof | H02M3/33571 | PTBLXML, file of 2026-07-21 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-05-01 | Assignment Assignment of assignor's interest | FLUKE AUSTRIA GMBH signed 2023-10-30 GRAW, JEFFREY D. signed 2023-05-01 | FLUKE CORPORATION EVERETT, WA | 67282/102 | PASDL, file of 2026-08-13 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.