Patent · US Active

Circuit arrangement for an LED light source

US9516711B2 · kind B2 · utility

4Cited by

20References

27Claims

0Family size

Assignee

Schott AG · DE

Inventors

Achim Weil · Immesheim, DE
Bjoern Bleisinger · Riesweiler, DE
Stefan Siebenrock · Karlsruhe, DE
Ulrich Schmitt · Deckenpfronn, DE

Key dates

Filing date	Nov 15, 2010
Grant date	Dec 6, 2016
Priority date	—
Expiry date	Dec 18, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/3725
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light-emitting diode module is provided that includes a housing and a printed circuit board, which is connected to a light-emitting diode and which has an LED driver, a control module, and a circuit arrangement. The circuit arrangement has a DC/DC converter and a bypass connected in parallel to the DC/DC converter. The bypass is activatable by a comparator circuit. The comparator circuit is arranged between an input of the circuit arrangement and the DC/DC converter and detects the level of an input voltage of the circuit arrangement and compares it with a first and second threshold value. The comparator circuit activates the bypass when the input voltage is below the first threshold value and deactivates the bypass when the second threshold value is exceeded.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.