Highly-integrated green LED resonance power circuit

A technology of power supply circuit and integrated circuit, which is applied in electric light circuit layout, high-efficiency power electronic conversion, electric light source, etc., can solve the problems of numerous peripheral components, bulky power supply, and high overall cost, and achieve broad market prospects, small size, and high line simple effect

Inactive Publication Date: 2014-05-07
SHENZHEN MEIKAI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing LED drive power circuit is complicated, the PFC power factor controller and the LLC pulse width modulation part are separated, and ar

Method used

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  • Highly-integrated green LED resonance power circuit
  • Highly-integrated green LED resonance power circuit

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Example Embodiment

[0011] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0012] Such as figure 1 As shown, the highly integrated green LED resonant power supply circuit of the present invention includes an AC input rectifier circuit, a PFC circuit, a PFC and LLC signal control integrated circuit, an LLC soft switch circuit, an output circuit, a feedback control circuit, and a programmable soft start circuit; The AC input rectifier circuit, the PFC circuit, the LLC soft switch circuit, and the output circuit are sequentially connected. The PFC and LLC signal control integrated circuits are respectively connected to the PFC circuit and the LLC soft switch circuit; the feedback control circuit is respectively connected to the PFC and LLC The signal control integrated circuit is connected with the output circuit for automatically controlling the output voltage and current; the programmable soft start circuit is connected with the PFC an...

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Abstract

The invention discloses a highly-integrated green LED resonance power circuit comprising an alternating-current input rectification circuit, a PFC circuit, a PFC and LLC signal control integrated circuit, a LLC soft switching circuit, an output circuit and a feedback control circuit. The alternating-current input rectification circuit, the PFC circuit, the LLC soft switching circuit and the output circuit are connected in sequence. The PFC and LLC signal control integrated circuit is respectively connected with the PFC circuit and the LLC soft switching circuit. The feedback control circuit is respectively connected with the PFC and LLC signal control integrated circuit and the output circuit and is used for automatically controlling output voltage and current. The highly-integrated green LED resonance power circuit has the following beneficial effects: the power circuit is a high-performance and high-energy-efficiency green LED power supply which highly integrates various functions of PFC and LLC; the power circuit has the characteristics of high reliability and high efficiency; 95% of peak efficiency can be provided; the thermal performance of a LED power supply is improved; and meanwhile, waste of electric energy is reduced and the service life of LEDs is prolonged.

Description

【Technical field】 [0001] The invention relates to a power supply circuit, in particular to a highly integrated green LED resonant power supply circuit. 【Background technique】 [0002] Modern electronic equipment has more and more functions, and the high power consumption of the equipment has an increasing impact on the environment. Improving power supply efficiency is one of the main ways to reduce power consumption. The existing LED drive power circuit is complicated, the PFC power factor controller and the LLC pulse width modulation part are separated, and are composed of different IC chips, and the EMC part interferes with each other between PFC and PWM. Production, repair rate is high, and the overall cost is high. 【Content of invention】 [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a highly integrated green LED resonant power supply circuit. [0004] The purpose of the present invention is achieved like t...

Claims

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Application Information

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IPC IPC(8): H02M7/02H02M1/42H02M1/36H02M3/335H05B37/02
CPCY02B70/10
Inventor 赖良海余群程元伟
Owner SHENZHEN MEIKAI ELECTRONICS
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