Switching regulator control
US4316136A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | May 16, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method for controlling a switching regulator composed of a controllable electronic switch and a transformer, in which the electronic switch forms a series path with the transformer primary, the series path is connected in series between a direct voltage source and a load, and the amplitude of the current flowing through the switch constitutes a criterion for controlling the load voltage, which method includes periodically causing the switch to assume one switching state at regular intervals occurring with a predetermined frequency, comparing the value of a comparison voltage corresponding to the load voltage and having a selected nominal value with a second voltage value, and causing the switch to assume its opposite switching state when a predetermined relation exists between the comparison voltage value and the second voltage value, the second voltage value is defined by the sum of the values of a constant reference voltage, a control voltage which varies as a function of the current induced in the transformer secondary by current through the switch subsequent to closing of the switch and while the switch remains closed and a voltage having a sawtooth waveform and varying be…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.