A universal led drive controller

Abstract

The present invention proposes a universal LED drive controller, including a reference resistor, a current measuring resistor, a load, a driving circuit, a control circuit and a configuration resistor, one end of the reference resistor and one end of the current measuring resistor are connected to the output end of the load, and the reference The other end of the resistor is connected to one input end of the drive circuit and the output end of the control circuit at the same time, the other end of the current measuring resistor is connected to the other input end of the drive circuit, the output end of the drive circuit is connected to the drive input end of the load, and the power supply of the load The input terminal is connected to the input power supply, one input terminal of the control circuit inputs the control voltage signal, the other input terminal of the control circuit is connected to one end of the configuration resistor, and the other end of the configuration resistor is grounded; the configuration resistor is an adjustable resistor; the load is plug-in type LED load. The controller of the invention realizes the accurate flow measurement and feedback function, can be applied to different load applications, improves the universality, safety and reliability of the LED drive controller, and reduces the cost.

Description

technical field [0001] The invention relates to the technical field of LED lighting equipment driving circuits, in particular to a universal LED driving controller. Background technique [0002] LED driver refers to a converter that converts power supply (such as high-voltage industrial frequency AC, that is, mains power, low-voltage high-frequency AC such as the output of an electronic transformer, etc.) into a specific voltage and current to drive LED lighting equipment or devices to work, that is, That is, the power supply is converted into a rated power suitable for lighting equipment or device work through devices such as transformers. In order to ensure the safe use of the LED driver, a control circuit is generally configured for the LED driver, and the control circuit controls the LED driver according to the corresponding current measurement feedback results (that is, the LED driver circuit, referred to as the driver circuit). The traditional control circuit, on the ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem that the existing LED-driven control circuit cannot be applied to different LED load ranges, and the existing control circuit has poor versatility or cannot meet the requirements of versatility and safety and reliability at the same time, thus resulting in high cost of repeated design. A universal LED drive controller is developed. Through the reasonable configuration of resistors and specific multi-input control circuits, the controller can be applied to different load applications while realizing accurate current measurement and feedback functions, and improves LED drive control. The versatility of the device, while meeting the safety and reliability requirements, reduces the design cycle and cost

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