Electronic transformer with peak current control for low power led lamps

A technology of electronic transformers and LED lamps, which is applied in the conversion device of output power, the conversion of DC power input into DC power output, and the adjustment of electrical variables, which can solve the problems of long working hours and low current.

Active Publication Date: 2022-04-29
LEDVANCE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, conventional transformers have long operating times, such as about 8ms in a 10ms period, resulting in currents below the threshold for stable operation

Method used

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  • Electronic transformer with peak current control for low power led lamps
  • Electronic transformer with peak current control for low power led lamps
  • Electronic transformer with peak current control for low power led lamps

Examples

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Embodiment Construction

[0025] Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Here, elements that are identical, similar, or have the same or similar effect are denoted by the same reference numerals in the figures. Duplicated descriptions may therefore be omitted in order to prevent redundant descriptions.

[0026] image 3 The general structure of an electronic transformer 1 for improved compatibility is schematically shown. The transformer 1 is particularly suitable for operating one or more low power LED lamps 2 .

[0027] The transformer 1 receives AC power (ie alternating current) through input ports P1, P2. The transformer 1 is configured to convert the AC voltage into a substantially DC (ie, direct current) current, which is then transformed to operate the LED lamp 2 . To this end, the transformer 1 comprises a rectifier circuit 3 and two stages, namely a first stage 10 and a second stage 20 . The rectifier circuit 3 ca...

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PUM

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Abstract

The present disclosure provides an electronic transformer and LED lamp system with peak current control for low power LED lamps. The electronic transformer (1) is configured to provide output power for operating the LED lamp (2), wherein the electronic transformer (1) comprises: voltage input ports (P1, P2) configured to connect the electronic transformer (1) to an AC power source ), a rectifier circuit (3) for converting AC power received at the voltage input ports (P1, P2) into DC power, and a boost circuit (3) comprising a boost circuit configured to generate a bus voltage (V-bus) and configured to switch boost A first stage (10) of an on / off switch circuit of the voltage circuit, wherein the switch circuit is configured to disconnect the boost circuit if the bus voltage (V-bus) is higher than a first threshold (V-bus-H) , if the bus voltage (V-bus) is lower than the second threshold (V-bus-L), the boost circuit is turned on.

Description

technical field [0001] The present invention relates to an electronic transformer configured to provide output power for operating an LED lamp and an LED lamp system comprising an electronic transformer and at least one LED lamp connected to the electronic transformer. Background technique [0002] With the advent of LED lamps, efficient and long-lived lighting devices became possible. Compared to other traditional lighting devices such as fluorescent lamps, LED lamps are made of safer materials because, for example, no mercury is required. In addition, LED lights have a longer lifespan and are more energy efficient than halogen lights. [0003] When LED lights are used to replace traditional lights such as fluorescent or halogen lights in order to use or "retrofit" existing fixtures and power sources, steps must be taken to establish compatibility. [0004] Low voltage halogen lamps generally require an electronic transformer configured to rectify and convert universal AC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/37H02M3/156H02M1/36
CPCH02M3/156H02M1/36
Inventor 熊坤
Owner LEDVANCE GMBH
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