Frequency-locked circuit for variable frequency topology and frequency-locked method thereof
US11705909B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2022 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Jul 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/335
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A frequency-locked circuit for a variable frequency topology is configured to trigger a Pulse Width Modulation (PWM) controller to lock a frequency of a driving signal outputted by the PWM controller. The frequency-locked circuit includes an AC wave generating circuit and a comparator. The AC wave generating circuit receives and converts the driving signal to generate an AC wave signal. The comparator is electrically connected to the AC wave generating circuit and receives the AC wave signal. The comparator compares the AC wave signal with a reference signal to generate a comparison output signal. In response to determining that the AC wave signal is greater than the reference signal, the comparison output signal triggers the PWM controller to convert the driving signal from one voltage level to another voltage level so as to lock the frequency. The one voltage level is different from the another voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.