Power converter with duty ratio quantization
US4630187A · kind A · utility
75Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/901
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discrete proportional-integral-differential controller, driven from a sampling digital error amplifier, is used to penetrate a quantized duty ratio control signal to provide dynamic output voltage regulation for switching dc-to-dc power converters. The sampling frequency of the digital PID controller is equal to the switching frequency of the power converter, so the digital controller may be used at different switching frequencies without recompensation. Digital techniques are also used to provide output current limiting, soft-start, undervoltage lockout, overvoltage shutdown, and power master-clear indications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.