Novel driving module

Abstract

The invention discloses a novel driving module. The novel driving module comprises a driving module body; a CPU control module is arranged at the center of the driving module body; and a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin, an eighth pin, a ninth pin and a tenth pin are sequentially arranged on one side of the driving module body from left to right. The novel driving module is a DC / DC step-down LED constant current driving chip, the input voltage range of the novel driving module is wide and reaches 85V-265V, the highest output forward current can reach 1.5 A and can meet most direct current application requirements, the current flowing through series LEDs of which the output voltage does not exceed the highest output voltage can be made stable, by comparing a feedback voltage of a sampling resistor with a reference voltage in the chip and controlling connection / disconnection of an output voltage through an internal MOSFET switch, the purpose of constant current is achieved, and constant current driving is performed on the LEDs.

Description

Technical field [0001] The invention belongs to the field of drive technology, and specifically relates to a new type of drive module. Background technique [0002] LEDs are semiconductor devices that convert electrical signals into optical signals. Its structure is mainly composed of PN junction chip, electrode and optical system. Under the action of positive voltage, electrons and holes are injected into the P and N regions respectively. When electrons and holes enter the anti-junction layer, a small number of free electrons and majority carriers recombine and convert the excess energy into light energy in the form of radiated photons. This is how LEDs emit light. The wavelength of light is determined by the material forming the PN junction, and the luminous brightness of the LED is related to the forward working current. [0003] With many advantages such as low energy consumption, high luminous efficiency, environmental protection, long service life, safety and reliability,...

AI Technical Summary

Problems solved by technology

Since the brightness of LED lighting is closely related to the intensity of its conduction current, constant current drive is the most ideal choice. Therefore, it is necessary to design a method to control the constant current drive LED to emit light, so as to avoid hardware failure caused by unreasonable driver chip design. Drive modules with low service life are the current and future development trend

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