Apparatus for the control of a switched power regulator
US4529927A · kind A · utility
33Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1983 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Oct 7, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controller apparatus comprising a phase-locked loop circuit which includes a phase comparator and a low-pass filter connected to accept a signal representing the switching frequency of the apparatus and an external frequency signal to produce a control signal for a controllable switch serving to vary the threshold levels of a reference signal, said control signal being a function of the phase difference between the input signals. The hysteresis of the apparatus is thereby changed over a few synchronization cycles in order to pull the controller into synchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.