Power saving technique in detach condition for USB-power delivery with integrated synchronous recitifier controller
US10910954B1 · kind B1 · utility
12Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Dec 6, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A secondary-side controller for an AC-DC converter that has a single synchronous rectifier sensing (SR_SNS) terminal, coupled to a synchronous rectifier (SR) of the AC-DC converter, and a voltage divider circuit coupled to the single SR_SNS terminal configured to provide signals to a sensing circuit. The voltage divider includes an active diode, an internal resistive element, and a switch, in which the active diode is configured to control the switch to enable or disable the internal resistive element based on a comparison result of a voltage at the single SR_SNS terminal and a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.