Switching regulator and constant frequency compensating circuit for fixing operating frequency
US8183848B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1563
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching regulator for fixing a frequency which includes a power stage circuit, comprising an upper gate switch, a lower gate switch and an inductor; a reference voltage generator for generating a reference voltage; a comparator for outputting a comparing result according to the output voltage and the reference voltage; a constant frequency compensating circuit for a control signal according to the comparing result, a phase signal and a compensating signal. The constant frequency compensating circuit comprises a charging capacitor. The phase signal corresponding to the cross voltage of the lower gate bridge, and the compensating signal corresponding to the output voltage, and the constant frequency compensating circuit utilizes the phase signal to initialize a voltage of a terminal of the charging capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.