Direct-current driving protection power supply integrated packaging chip

Abstract

A direct-current driving protection power supply integrated packaging chip comprises four diode chips and a freewheeling tube chip which are packaged in a plastic base in an SOP23-5 mode, the four diode chips form a bridge rectifier circuit, the input end of the bridge rectifier circuit is connected with a PIN4 pin and a PIN5 pin of the plastic base, and the output end of the bridge rectifier circuit is connected with a PIN3 pin and a PIN2 pin of the plastic base. The bridge rectifier circuit is used for carrying out bridge rectification on alternating current input by an input end to form direct current and outputting the direct current through an output end. One end of the freewheeling tube chip is connected with a direct-current positive end of the output end of the bridge rectifier circuit, the other end of the freewheeling tube chip is connected with a plastic-based PIN1 pin, and the freewheeling tube chip is used for consuming high electromotive force in a freewheeling mode to protect all elements when the direct-current positive end of the output end and the PIN1 pin are connected to the two ends of an element generating induced electromotive force in parallel. The direct-current driving protection power supply is realized only through one integrated packaging chip, the size is greatly reduced, the production efficiency is improved, the cost is saved, and the product ismore integrated and stable.

Description

technical field [0001] The invention relates to an integrated IC and a DC drive, in particular to a DC drive protection power integrated package chip. Background technique [0002] With the development of LED lighting technology, the competition among manufacturers is becoming more and more fierce, the reduction of production costs, and the development direction of miniaturization of power modules have become research directions. [0003] DC drive is widely used in the LED lighting industry, especially for the production of LED bulbs, LED strips, etc., to provide DC drive current for LEDs. At present, this type of drive mostly uses a rectifier module; if it is necessary to add a freewheeling protection module, another module needs to be added, and the rectifier module and the protection module are installed on the same PCB to form a DC drive protection power supply. This method uses at least Two separate devices, the rectifier and the freewheeling device, occupy a large vol...

AI Technical Summary

Problems solved by technology

At present, this type of drive mostly uses a rectifier module; if it is necessary to add a freewheeling protection module, another module needs to be added, and the rectifier module and the protection module are installed on the same PCB to form a DC drive protection power supply. This method uses at least Two separate devices, the rectifier and the freewheeling device, occupy a large volume and are expensive, which is not conducive to a more flexible "flexible" design when the LED light source is applied to a specific bulb or lamp, and it is also lacking in the market, which can be further significantly improved. DC drive protection power supply products with reduced size and lower cost appear

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