Switched mode power supply controller and method
US5862045A · kind A · utility
21Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1998 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched mode power supply has a transformer and a power switch to switch a primary current for operation in a critical conduction mode. The switched mode power supply has a controller which switches off a primary current when a peak current is reached. The primary current is switched on again when a zero current condition in the secondary is detected the first time after the primary current has been switched off and a minimum primary current off time has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.