Control circuit of power converter and reference voltage adjusting method thereof
US11656644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2021 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Aug 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit of a power converter includes a first sensing circuit, a reference voltage generation circuit, an error amplifying circuit and a PWM circuit. The first sensing circuit, coupled to a first output circuit, provides a first current sensing signal. The reference voltage generation circuit, coupled to the first sensing circuit, provides a reference voltage according to the first current sensing signal. The error amplifying circuit, coupled to the reference voltage generation circuit, receives the reference voltage and an output feedback voltage of the power converter to provide an error amplifying signal. The PWM circuit, coupled between the error amplifying circuit and the first output circuit, receives the error amplifying signal and provides a control signal to control the first output circuit. The reference voltage generation circuit further receives the error amplifying signal and adjusts the reference voltage it generates according to the error amplifying signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.