Programmable power supply with dual mode cross over clamps
US7098622B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply programmable for a constant current mode and a constant voltage mode and selectively operable in either mode. Respective circuits associated with each of a constant voltage loop and a constant current loop track a control voltage of the other loop when the other loop is operating closed loop and maintains a control voltage of the open loop at a tracking offset value from the control voltage of the closed loop, allowing the open loop to rapidly assume control of the power supply during a mode transition. The tracking offset value is briefly increased during a mode transition to interrupt oscillation tendencies, resulting in faster mode cross-over and reduced overshoots, while maintaining stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.