Switching converter and lighting device using the same
US9763295B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2016 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching converter includes: an output circuit including a switching transistor, an inductive element, and a rectifying element configured to rectify a current flowing to the inductive element; a control circuit having a monitor terminal, and configured to drive the switching transistor such that a voltage of the load becomes close to a reference voltage when a voltage of the monitor terminal is higher than the reference voltage, and to drive the switching transistor such that a voltage of the load becomes close to a voltage of the monitor terminal when a voltage of the monitor terminal is lower than the reference voltage; and an abnormality protection circuit configured to monitor a state of the load, the control circuit, peripheral circuits, and the switching converter, and to pull down a voltage of the monitor terminal to a voltage lower than the reference voltage when abnormality is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.