Power supply device with reference signal generating circuit for power saving mode
US6009005A · kind A · utility
8Cited by
19References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Dec 1, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply device having a transformer for generating at least one output voltage supplied to an electronic apparatus with power saving mode includes: a switching circuit connected to the transformer, a reference signal generator for generating a reference signal having a first high frequency or a second low frequency according to whether the electronic apparatus is in a normal operation mode or a power saving mode, and a PWM control circuit for generating a PWM signal to control the switching operation of the switching circuit according to the reference signal and a feedback signal from the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.