Fast transition power supply
US6121761A · kind A · utility
Inventor
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fast transition power supply comprises three control functions, one to maintain steady state conditions, a voltage transition circuit that rapidly changes the charge on the output capacitor to effect a rapid step change in the output voltage, and a current control circuit that can switch a constant current in a pulse width modulation control from zero (or negative) current to any current less than the maximum rated current with no change of current in the inductors of the circuit. The power supply can thus go from zero volts, no current to full output voltage, full current very quickly, in the order of less than an micro-second. It can also transition from full voltage, full current to zero voltage, zero current just as fast, or transition from one voltage to another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.