Integrated current mode PWM drive system supply voltage scaleable while retaining a high precision
US6184665A · kind A · utility
14Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a current mode pulse width modulation (PWM) integrated drive system having an external load, a switched-capacitor amplifier and a sample & hold stage connected in cascade form a current sensing amplifier for a control loop. The current sensing amplifier overcomes resistive mismatchings, thus permitting a scaling down of the supply voltage with high precision for the integrated drive system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.