Circuit arrangement for an LED light source

摘要

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.

主权项

1. A light-emitting diode module, comprising:
a housing; at least one light-emitting diode; and at least one printed circuit board including an LED driver, a control module, and a circuit arrangement, the at least one printed circuit board being connected with the at least one light-emitting diode, wherein the LED driver provides an operating point for operation of the at least one light-emitting diode controlled by the control module, wherein the circuit arrangement comprises a DC/DC converter, wherein the DC/DC converter is an integrated down-converter and the circuit arrangement further comprises a bypass circuit connected in parallel to the integrated down-converter, the bypass circuit being controlled by a comparator circuit, and wherein the comparator circuit enables the bypass circuit when an input voltage applied to the circuit arrangement falls below a first threshold value and disables the bypass circuit when the input voltage exceeds a second threshold value.