Compact driver, notably for a light emitting diode, having an integrated dual output

A light-emitting diode and driver technology, which is applied in the direction of output power conversion device, electroluminescence light source, DC power input conversion to DC power output, etc., can solve the problem of lack of LED driver and reduce the number and size of components , Promote the effect of black body line dimming

Active Publication Date: 2016-05-04
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The state of the art still lacks LED drivers that will integrate all complex requirements regarding color tuning and multiple output power management in a compact, efficient and optimized manner

Method used

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  • Compact driver, notably for a light emitting diode, having an integrated dual output
  • Compact driver, notably for a light emitting diode, having an integrated dual output
  • Compact driver, notably for a light emitting diode, having an integrated dual output

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Embodiment Construction

[0032] In the following detailed description, for purposes of explanation rather than limitation, representative examples disclosing specific details are presented in order to provide a thorough understanding of the present teachings. However, it will be apparent to those skilled in the art having the benefit of this disclosure that other embodiments of the present teachings that depart from the specific details disclosed herein remain within the scope of the appended claims. Moreover, descriptions of well-known apparatus and methods are omitted so as not to obscure the description of the representative embodiments. Such methods and apparatus are expressly within the scope of the present teachings.

[0033] figure 1 A block diagram of an LED driver connected to a load and a voltage source in an exemplary embodiment of the invention is shown.

[0034] figure 1 An LED driver 10 is depicted connected to a power source 11 and coupled to a load 13 . The driver and load are comp...

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PUM

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Abstract

The current invention relates to a LED driver (10) for driving at least two LED strings (131, 133) comprising: a dual output power converter (103) for converting an input voltage (Vin) into two different output voltages for driving two sets of said at least two LED strings (131, 133), a controller (107) for controlling the dual output power converter (103) based on at least one input set point, the dual output converter (103) comprising a switched capacitor converter comprising a plurality of switches, a plurality of capacitors, the outputs of the dual output power converter (103) being connected to internal nodes of the dual power converter (103), the controller (107) being further adapted to deliver PWM output control signals for driving the switches, the duty cycle of which being a function of said at least one input set point. The invention also relates to a lighting system (1) comprising such a driver (10).

Description

technical field [0001] The invention relates to the field of integrated power converters. The invention is particularly applicable to drive circuits for light emitting devices such as light emitting diode (LED) light sources. More specifically, the present invention relates to a compact and efficient power conversion device. Background technique [0002] Applications requiring a high degree of integration of power conversion modules, for example using switch-mode power supplies (SMPS), can resort to power converters such as switched-capacitor converters (SCC), which are capable of using only capacitors combined with inductive output filters and switch provides efficient DC-to-DC voltage conversion. [0003] Notably, the solid-state lighting (SSL) industry is seeing increasing demand for small and compact power management units for LEDs. LEDs require that power be delivered as efficiently as possible in the form of a constant current. Ideally, an LED driver sized and comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H02M1/00H05B44/00
CPCH05B45/39Y02B20/30H05B45/3725H05B45/395H02M3/158H05B45/48
Inventor J·德罗斯艾伦T·洛佩斯M·A·M·亨德里克斯E-J·阿拉肯-科特
Owner SIGNIFY HLDG BV
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