LED downlight light source integrated circuit and led downlight

Abstract

The LED downlight light source integrated circuit provided by the present invention adopts the DOB scheme integrating the switching power supply circuit and the LED, and integrates the MOS tube, the PWM controller and the linear voltage regulator circuit into one control IC, so that the original power supply circuit can be saved. A large number of circuit devices are added to make the driving circuit very small, so that the LED lamp bead and the driving circuit are packaged on the same aluminum substrate at the same time, which greatly saves the BOM cost. At the same time, the LED downlight light source integrated circuit using the switching power supply circuit is also It combines stable constant current performance, superior power conversion efficiency and dimming effect. The structure of the LED downlight using the integrated circuit of the present invention is simple, so that the assembly of the LED downlight is simpler, the cost is lower, and it has stable constant current performance, superior power conversion efficiency and dimming effect.

Description

technical field [0001] The invention relates to an LED downlight light source integrated circuit and an LED downlight. Background technique [0002] At present, the existing LED downlights are mainly composed of heat dissipation components, LED modules, driving circuits, light expansion boards and the like. The driving circuit and the LED module are designed separately, and the driving circuit part needs to be designed with a protective case to protect the components of the driving circuit, and then connected to the LED module through wires. This design not only increases the amount of components used, but also The requirements for the assembly process are relatively high, but as the market continues to compress costs, this design can no longer meet the needs of the existing market. [0003] In this regard, a new LED downlight using a new scheme has appeared on the market. This scheme is called DOB. The downlight using the DOB scheme is to configure the LED light source and...

AI Technical Summary

Problems solved by technology

The driving circuit and the LED module are designed separately, and the driving circuit part needs to be designed with a protective case to protect the components of the driving circuit, and then connected to the LED module through wires. This design not only increases the amount of components used, but also It has high requirements for assembly process, but with the continuous reduction of cost in the market, this design can no longer meet the needs of the existing market

[0003] In this regard, a new LED downlight using a new scheme has appeared on the market. This scheme is called DOB. The downlight using the DOB scheme is to configure the LED light source and the driving circuit on the same aluminum substrate. Because the driving circuit and the LED The integrated setting of the light source effectively reduces the technical problems of many downlight parts, complicated assembly process and high cost

The drive circuit part of the current DOB scheme is a high-voltage linear constant current circuit, but the high-voltage linear constant current circuit has certain defects in terms of efficiency, constant current performance, and dimming effect.

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