Integrated LED downlight light source circuit and LED downlight

Abstract

The invention provides an integrated LED downlight light source circuit and employs a DOB scheme integrating a switch power source circuit and an LED. An MOS tube, a PWM controller and a linear voltage stabilizing circuit are integrated on a control IC, extra circuit devices are omitted from an original power source circuit, a driving circuit becomes smart, LED lamp balls and the driving circuit can be both packaged in one same aluminum substrate, BOM cost is greatly saved, and the integrated LED downlight light source circuit employing the switch power source circuit further has properties of stable constant current performance, excellent power conversion efficiency and excellent light modulation effect. The integrated LED downlight light source circuit is advantaged in that the LED downlight structure is simple, LED downlight assembly becomes more simple, cost is lower, and properties of stable constant current performance, excellent power conversion efficiency and excellent light modulation effects are realized.

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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