A packaging structure for LED AC drive high-voltage chips

Abstract

The invention discloses a packaging structure of an LED alternating-current driving high-voltage chip. The packaging structure comprises a rectangular chip body, a plurality of ultrahigh-voltage pins, a plurality of high-voltage pins and a plurality of low-voltage pins are arranged on the back of the chip body, pitches among the ultrahigh-voltage pins, among the high-voltage pins, among the ultrahigh-voltage pins and radiating fins and among the high-voltage pins and the radiating fins are larger than pitches among the low-voltage pins, namely that the pitches among the ultrahigh-voltage pins, among the high-voltage pins, among the ultrahigh-voltage pins and radiating fins and among the high-voltage pins and the radiating fins are large, so that the chip can meet requirements on voltage withstanding and safety. The radiating fins are attached on a substrate on the back of the chip body, so that the chip can quickly radiate via the radiating fins, and radiating efficiency and radiating effect are improved.

Description

technical field [0001] The invention relates to the technical field of chip packaging, in particular to a packaging structure for LED AC driving high-voltage chips. Background technique [0002] LED (Light Emitting Diode, light-emitting diode) is a new generation of light source that uses semiconductor materials as the electro-optic conversion medium. It has the characteristics of energy saving, environmental protection, long life, and small size. It will soon replace energy-saving lamps and become mainstream lighting. With the implementation of the global ban on production and sales of incandescent lamps, LED lighting will face the opportunity to replace incandescent lamps, with a market size of hundreds of billions. [0003] Generally, the LED drive system used in LED lighting fixtures usually needs to use LED drive chips to drive the LEDs. However, most of the existing LED drive chips are low-voltage chip designs. Such low-voltage drive chips have poor voltage resistance ...

AI Technical Summary

Problems solved by technology

[0003] Generally, the LED drive system used in LED lighting fixtures usually needs to use LED drive chips to drive LEDs. However, most of the existing LED drive chips are designed for low-voltage chips. This low-voltage drive chip has poor voltage resistance and poor heat dissipation.

Since the LED AC driver is a high-voltage direct drive, if the general-purpose package design is continued, the design will not meet the safety requirements, especially when the pins are more than 8, it is difficult to meet the safety and heat dissipation requirements, and there is no matching package.

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