Dimming type panel light power supply

Abstract

The invention discloses a dimming type panel light power supply. The dimming type panel light power supply comprises an input power supply module, a power supply control soft start module, an isolation control module, a feedback module, a PWM control module, a DC output module and a dimming panel light. The input power supply module, the power supply control soft start module, the isolation control module, the feedback module, the PWM control module and the DC output module are integrated on a power supply circuit board in a one-piece manner by adopting a double-sided welding process; the input power supply module is provided with an AC input end; the isolation control module is connected to the power supply control soft start module, the feedback module and the DC output module; the PWM control module is connected to the feedback module; the DC output module is provided with a DC output end; and the DC output end is electrically connected to the dimming panel light. The power supply circuit board can control the panel light, so that the brightness of the panel light can be adjusted at will; and the brightness is in smooth and continuous transition, so that a person cannot have an uncomfortable feeling.

Description

technical field [0001] The invention relates to the technical equipment field of LED panel lights, in particular to a dimming type panel light power supply. Background technique [0002] As a high-efficiency solid-state light source, LED has been paid more and more attention by people. Its characteristics of energy saving, environmental protection, long life and small size have been widely used in high-power lighting occasions such as road lighting and tunnel lighting. There are two ways to drive LED panel lamps: constant current and constant voltage. The constant current mode is beneficial to prolong its life; the constant voltage mode will cause the temperature of the PN junction of the LED to change and affect the life of the LED. PWM dimming technology is a pulse width regulation power regulation method. This technology is usually used in power regulation in electrical appliances such as induction cooker and electric bicycle speed regulation. Its characteristic is that n...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, there are many kinds of LED dimming power supplies in the industry, mainly including: LED thyristor dimming power supply, LED (1-10V) dimming power supply and PWM dimming power supply, although each power supply has its own characteristics, However, the shortcomings are that it cannot achieve very smooth adjustment during the LED dimming process, that is to say, in terms of LED brightness adjustment, continuous brightness adjustment cannot be achieved, and the brightness transition is not smooth enough.

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