High-efficiency output power supply adaption circuit for LED chip

A technology of LED chips and adaptation circuits, which is applied to output power conversion devices, electrical components, etc., can solve the problems of low efficiency, poor reliability, and high power consumption, and achieve the effects of low cost, high power factor, and low power consumption.

Inactive Publication Date: 2013-03-20
XIAN ZHIHAI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a high-efficiency output power supply adaptation circuit for LED chips, which mainly solves the problems of high power consumption, low efficiency and poor reliability of existing low-voltage new energy power converters

Method used

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  • High-efficiency output power supply adaption circuit for LED chip
  • High-efficiency output power supply adaption circuit for LED chip
  • High-efficiency output power supply adaption circuit for LED chip

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Embodiment Construction

[0030] The LED chip uses a high-efficiency output power supply adaptation circuit, including an input power supply, the output end of the input power supply is respectively connected to the input end of the freewheeling inductor and the input end of the input current sampling circuit, and the output end of the freewheeling inductor is connected to the VMOS switch The input end of the circuit is connected, the input end of the VMOS switch circuit is also connected with the output end of the control circuit, and the output end of the VMOS switch circuit is connected with the load through the reverse isolation circuit and the energy storage filter circuit in turn; the control circuit includes a width adjustment type The pulse control circuit, the drive signal synthesis circuit, the VMOS switch drive circuit and the freewheeling voltage sampling circuit, the input end of the width-adjustable pulse control circuit are respectively connected with the output end of the input current sa...

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PUM

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Abstract

The invention provides a high-efficiency output power supply adaption circuit for an LED chip, which mainly solves the problems of high power consumption, low efficiency and poor reliability of a low-voltage new-energy power converter. The output end of an output power supply of the high-efficiency output power supply adaption circuit for the LED chip is respectively connected with the input end of a flow current inductor and the input end of an input current sampling circuit, the output end of the flow current inductor is connected with the input end of an VMOS (V-groove metal oxide semiconductor) switch circuit, the input end of the VMOS switch circuit is further connected with the output end of a control circuit, and the output end of the VMOS switch circuit is connected with a load through a reverse isolation circuit, an energy storage filter circuit and an output protection circuit sequentially. The high-efficiency output power supply adaption circuit for the LED chip can more efficiently and reliably provide power to the LED chip at a low cost, and has no requirement on the form of low-voltage input voltage; the added output protection circuit can guarantee current-limited output of the LED chip in accidental short circuit during the work of the LED chip, and meanwhile, low power consumption can also be guaranteed.

Description

technical field [0001] The invention relates to an output power supply adaptation circuit. Background technique [0002] In recent years, photovoltaic power generation, wind power generation, battery power supply and other renewable new energy systems with AC low voltage and DC low voltage power supply have been widely used. It is imperative to improve the power supply efficiency, power supply quality and power supply reliability of low voltage new energy power supply systems. [0003] At present, the power conversion known in the art basically adopts: [0004] 1. AC (AC) input, using a full-wave rectifier to rectify the input AC (AC) power to DC (DC) power, and then convert DC / DC to DC (DC) output. This kind of scheme solves the conversion problem of higher input voltage AC power supply and low-power power supply. However, when low-voltage AC power input and high-power power conversion, because the voltage drop of the AC / DC rectifier circuit is relatively high, high power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/088H02M1/32
Inventor 胡家培胡民海
Owner XIAN ZHIHAI POWER TECH
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