Digital switching voltage regulator
US4947101A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1988 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Sep 11, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved digital switching voltage regulator 10 for providing a regulated voltage having a well defined steady state ripple component is disclosed herein. The improved voltage regulator 10 of the present invention includes a control circuit 25 for providing a first output voltage and at least one shift pulse when the voltage across a load 21 operatively coupled to the regulator 10 departs from a voltage regulation window by crossing an upper threshold voltage thereof. The control circuit 25 also provides a second output voltage and at least one shift pulse when the load voltage departs from the voltage regulation window by crossing a lower voltage threshold thereof. A bi-directional shift register 50 generates a set of control voltages in response to the output voltage of the control circuit 40 and the shift pulse. Current is provided to the load 21 by an array 70 of switchable current sources in response to the set of control voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.