A high-power resonant power supply control chip realized by double-chip packaging

Abstract

The invention discloses a high-power resonant power supply control chip realized by double-chip packaging, which includes a lead frame, the lead frame has a package surface, 16 mutually isolated and insulated lead pins are arranged on the package surface, and the package surface is packaged with The low-voltage control chip made by low-voltage technology and the high-voltage driver chip made by high-voltage technology, the low-voltage control chip has 14 mutually isolated and insulated pins, the high-voltage driver chip has 7 mutually isolated and insulated pins, the low-voltage control chip The chip and the high-voltage driver chip are connected through 2 pins, the 12 pins of the low-voltage control chip are connected to the 12 pins on the package surface, and the 3 pins of the high-voltage driver chip are connected to the 3 pins on the package surface Connection; the advantage is that since the low-voltage control chip and the high-voltage driver chip are manufactured separately, there is no need to use two processes in one chip at the same time, and the two chips are tested separately. Double-chip packaging can improve yield and reduce chip costs.

Description

technical field [0001] The invention relates to a high-power resonant power supply control chip, in particular to a high-power resonant power supply control chip realized by double-chip packaging. Background technique [0002] With the popularity of LCD TVs and high-power commercial LEDs, both LCD TVs and high-power commercial LEDs rely on high-power resonant power supplies to convert alternating current into direct current for work. The advantage of the resonant power supply is that it can achieve constant DC voltage and current output corresponding to the AC voltage input from 90V to 265V, and the AC-DC conversion efficiency is high, and it can provide various protections, such as input undervoltage protection, overcurrent protection, load Short circuit protection, soft start, etc. The core of the resonant power supply is the resonant power supply control chip. [0003] The existing high-power resonant power supply control chips are all manufactured by integrating the lo...

AI Technical Summary

Problems solved by technology

[0003] The existing high-power resonant power supply control chips are all manufactured by integrating the low-voltage control chip and the high-voltage driver chip in one silicon chip. This not only requires high process requirements, but also requires the integration of high-voltage and low-voltage processes, and the high-power resonance produced by manufacturing The yield rate of the power control chip will also decrease, the difficulty and cost of manufacturing will increase, the price of the chip will be high, and the cost of the overall solution for customer applications will also increase

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