Four and five terminial PWM-controlled power supply packages
US6324079A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Oct 4, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2038/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply package for pulse-width modulated control of a power converter includes a first terminal for coupling to a primary winding of a transformer; a second terminal for coupling to an activation gate of an external power switch; a third terminal for coupling to a ground reference; and a fourth terminal for coupling to a combined source of operating power and feedback signal, the feedback signal based on an output load voltage across a secondary winding of the transformer. The package includes an internal power switch having an input coupled to the first terminal, an output coupled to the third terminal, and an activation gate. The package further includes control circuitry responsive to the feedback signal, the control circuitry having a first output coupled to the internal switch activation gate and a second output coupled to the second terminal, the control circuitry configured to drive the internal and external power switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.