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

A power control chip, low-voltage control chip technology, applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of high-power resonant power control chip yield reduction, manufacturing difficulty and cost increase, high process requirements, etc., to avoid The effect of unstable chip working state, improving yield rate, and solving heat dissipation problems
CN105575941BActive Publication Date: 2018-01-02NINGBO SEMICON INT CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO SEMICON INT CORP
Publication Date
2018-01-02

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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.
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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...

Claims

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