Control circuit, control chip and power supply device
US12249900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2022 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/458
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit, a control chip and a power supply device are disclosed by the present invention. The control circuits are used for control of a constant-voltage closed-loop which causes a voltage of a voltage feedback signal obtained from an output voltage to approach a voltage of a reference voltage signal obtained from a base voltage and thereby achieves a constant-voltage output. In addition, when a sampled current obtained from an output current is higher than a predetermined current, or when output power is higher than a predetermined power, the control circuit increases the voltage feedback signal or decreases the reference voltage signal, causing the constant-voltage closed loop to decrease the output voltage and the output current and thereby achieving a limited output current and limited output power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.