Pulse-width-modulated DC-DC converter with a ramp generator
US6522115B1 · kind B1 · utility
26Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/613
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pulse-width-modulated DC-DC converter provides an output signal that is feedback to an error amplifier. The converter includes a comparator for comparing the output voltage of the error amplifier with the output voltage of a compensated ramp generator and having its output coupled to a switching transistor. The compensated ramp generator is designed so that the signal proportional to the current (IDrossel) through an inductor is superimposed on the ramp voltage so as to generate an output voltage having a sawtooth waveform with a concave rise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.