Double-input LLC resonant half-bridge circuit type planar transformer with current-sharing and voltage-sharing inductors

Abstract

The invention discloses a double-input LLC resonance half-bridge circuit type planar transformer with current-sharing and voltage-sharing inductors, which comprises an insulating bottom plate, a lefttransformer, a right transformer, a left resonance inductor, a right resonance inductor and a nanocrystalline magnetic ring, and the rear side of the upper end surface of the insulating bottom plate is vertically provided with the left transformer and the right transformer; a nanocrystalline magnetic ring is vertically mounted between the left resonant inductor and the right resonant inductor on the front sides of the left transformer and the right transformer; the left transformer and the right transformer enable leakage inductance values of the left transformer and the right transformer andinductance values of the left resonance inductor and the right resonance inductor to meet specified requirements by adjusting an air gap of a magnetic core middle column, the requirements of a soft switching power supply resonance circuit are met, and the two paths of transformers are primarily integrated with transverse magnetic nanocrystalline current-sharing voltage-sharing inductors. The high-power switching power supply has the advantages of high frequency, high power, high reliability and the high integration level, the output voltage is adjustable, and the development trend of a high-switching-frequency, low-loss, high-power, modular, high-integration and low-cost direct-current power supply is met.

Description

Technical field: [0001] The invention relates to the field of transformers, in particular to a double-input LLC resonant half-bridge circuit planar transformer with current and voltage equalizing inductors. Background technique: [0002] Traditional transformers are generally wound with enameled wires, and the winding form is relatively manual. The complicated winding process requires thick wires and is difficult to operate when encountering low voltage and high current. It is difficult to control the leakage inductance and distributed capacitance of the transformer. Batch consistency, installation volume, and temperature rise limitations have brought great difficulty to the actual batch production and debugging of high-power DC sources. In addition, the structure of traditional transformers is not conducive to heat dissipation, so it is difficult to achieve high-frequency, The development trend of low loss, high power density and modularization. [0003] Conventional produ...

AI Technical Summary

Problems solved by technology

[0002] Traditional transformers are generally wound with enameled wires, and the winding form is relatively manual. The complicated winding process requires very thick wires and is difficult to operate when encountering low voltage and high current. It is difficult to control the leakage inductance and distributed capacitance of the transformer. Batch consistency, installation volume, and temperature rise limitations have brought great difficulty to the actual batch production and debugging of high-power DC sources. In addition, the structure of traditional transformers is not conducive to heat dissipation, so it is difficult to achieve high-frequency, The development trend of low loss, high power density and modularization

Images