Driving power supply control circuit

Abstract

The invention discloses a driving power supply control circuit. The driving power supply control circuit comprises a rectifier filter circuit, a DC / DC (Direct Current to Direct Current) transformation circuit, a switching control circuit, a feedback control circuit and a secondary output rectifier circuit. The feedback control circuit is connected between the secondary output rectifier circuit and the switching control circuit; the voltage sampling end of the feedback control circuit is connected with a singlechip control circuit; the singlechip control circuit is used for generating a control signal PWM1 to control a feedback voltage output of the feedback control circuit; and the singlechip control circuit can also be used for generating a load current control signal PWM2 for a load current control circuit to regulate the average of an output current cycle. According to the driving power supply control circuit provided by the invention, the mass production of a manufacturer can be ensured, the matching can be implemented only by carrying out program updating on a singlechip chip for different LED (Light-Emitting Diode) loads, the manpower and material cost is reduced, the production efficiency is improved and the supply quality is also ensured.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a driving power supply control circuit capable of controlling LED loads. Background technique [0002] Nowadays, there are many kinds of series and parallel LED optical group modules, and there are quite a lot of current and voltage requirements for the driving power supply. This puts a lot of pressure on the design, production and material supply of professional manufacturers of driving power supplies. Often professional LED lighting manufacturers require short, smooth and fast delivery of the driving power supply. Since the LED loads of various LED lighting manufacturers are connected in series and parallel in various ways, the voltage and current of the driving power supply also change with the change of the LED module. There is a relative process from design to production of driving power (reliability verification is required), so professional driver manufacturers cannot...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, there are many types of serial and parallel LED optical group modules, and there are also quite a lot of current and voltage requirements for the driving power supply. This puts a lot of pressure on the design, production and supply of materials for professional manufacturers of driving power supplies.

Often professional LED lighting manufacturers require short, smooth and fast delivery of the driving power supply. Since the LED loads of various LED lighting manufacturers are connected in series and parallel in various ways, the voltage and current of the driving power supply also change with the change of the LED module. There is a relative process from design to production of driving power (reliability verification is required), so professional driver manufacturers cannot make a large amount of inventory. The current phenomenon is that driving power manufacturers spend a lot of manpower and material resources on the parameters of driving power Carry out prefabrication, and then start production and shipment in a hurry. The LED drive power produced by such a quick response has a great hidden danger in the supply quality, and because the drive power produced by each manufacturer is incompatible with other manufacturers' LED modules, If it cannot be shared, the power supply current parameters of the drive power supply must be modified before matching and assembling, which will cause a lot of waste of manpower and material resources, and will also generate a lot of electronic waste, which is contrary to the environmental protection concept of LED lighting.

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