A single-stage high-voltage DC power supply led switching power supply

A high-voltage DC and switching power supply technology, applied in the power supply field, can solve the problems of low power conversion efficiency and increased power consumption, and achieve the effects of simplifying interface signals, increasing power conversion power, and improving power conversion efficiency

Active Publication Date: 2020-10-27
杭州兴达电器工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a high-efficiency isolated LED switching power supply, the existing mainstream scheme adopts a single-stage switching power supply scheme, and its switching circuit adopts a single-stage switching power supply scheme, and the topology of its switching circuit adopts a flyback switching power supply circuit to obtain the most Good cost performance, but the power conversion efficiency is low. The root cause is that there is a fixed power consumption in the clamping circuit part of the switching circuit, and the power consumption of this part will double with the increase of the power supply.

Method used

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  • A single-stage high-voltage DC power supply led switching power supply
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  • A single-stage high-voltage DC power supply led switching power supply

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, in the embodiment of the present invention, a single-stage high-voltage DC power supply LED switching power supply is proposed, including a main circuit and a control circuit.

[0037] The main circuit includes an HVDC input EMC unit, a non-isolated step-down switching circuit unit, an output EMC unit, a signal acquisition unit, a switch signal drive unit and a first primary signal interface unit; wherein,

[0038] The HVDC input EMC unit is connected to the non-isolated step-down switch circuit unit and the signal acquisition unit, the non-isolated step-down switch circuit unit is connected to the signal acquisition unit and the output EMC unit, and the signal acquisition unit is connected to the first primary signal interface un...

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Abstract

The invention provides a single-stage high-voltage DC power supply LED switching power supply, including a main circuit and a control circuit; the circuit includes an HVDC input EMC unit, a non-isolated step-down switch circuit unit, an output EMC unit, a signal acquisition unit, and a switch signal drive unit and the first primary signal interface unit; the control circuit includes a standby power supply unit, a digital power controller unit, a signal isolation unit, a primary signal conditioning unit, a secondary signal conditioning unit, a communication programming interface unit, a second primary signal interface unit and a secondary level signal interface unit. In the main circuit, the existing active flyback clamp method is improved to a flyback buck step-down circuit to increase the power conversion power; in the control circuit, the existing control module circuit is integrated with the standby power supply unit and the primary and secondary signal isolation coupling circuit Together. The implementation of the present invention can effectively improve the power conversion efficiency by limiting the implementation cost and complexity of the circuit.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a single-stage high-voltage direct-current power supply LED switching power supply. Background technique [0002] Switching power supply is developed from linear regulated power supply, and with the rapid development of technology, it has been widely popularized as a common product in life. [0003] As a high-efficiency isolated LED switching power supply, the existing mainstream scheme adopts a single-stage switching power supply scheme, and its switching circuit adopts a single-stage switching power supply scheme. The topology of its switching circuit adopts a flyback switching power supply circuit to obtain the most The cost performance is good, but the power conversion efficiency is low. The root cause is that there is a fixed power consumption in the clamping circuit part of the switching circuit, and the power consumption of this part will double with the increase of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/3725H02M3/158H05B44/00
Inventor 吴平和志文周尊袆张欢艳翁德华
Owner 杭州兴达电器工程有限公司
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