Integrated switch mode power supply controller and switch mode power supply using the same
US9369049B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2014 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Mar 24, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an integrated switch mode power supply controller can include: a multiplexing pin that receives a detection voltage signal; a switch mode power supply that receives a DC input voltage, and operates in a switching cycle having first, second, and third time intervals; during the first time interval, the detection voltage signal is proportional to the DC input voltage, and a current compensation signal is generated according to the detection voltage signal to obtain a peak inductor current; during the second time interval, the detection voltage signal is proportional to an output voltage of the switch mode power supply, and a discharging duration of current through the inductor is determined based on the detection voltage signal; and during the third time interval, the detection voltage signal is proportional to a voltage across a power transistor of the switch mode power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.