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Flat plate transformer and coupling type self-powered circuit formed by flat plate transformer

A flat-panel transformer, coupled technology, applied in the field of electronics, can solve the problems of large volume and high production cost, and achieve the effects of being less prone to high voltage breakdown, reducing volume and reducing cost

Pending Publication Date: 2022-06-28
ANHUI DONGKE SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the windings of existing planar transformers used for power supply circuits are mostly composed of primary energy storage winding layer NP, output winding layer NS and power supply winding layer NA, which has the problems of large volume and high production cost.

Method used

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  • Flat plate transformer and coupling type self-powered circuit formed by flat plate transformer
  • Flat plate transformer and coupling type self-powered circuit formed by flat plate transformer
  • Flat plate transformer and coupling type self-powered circuit formed by flat plate transformer

Examples

Experimental program
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Effect test

Embodiment 1

[0020] like figure 1 and figure 2 As shown, the purpose of the present invention is achieved through the following technical solutions: a flat-panel transformer, comprising a primary energy storage winding layer NP and an output winding layer NS. Specifically, the flat-panel transformer in this embodiment cancels the power supply winding layer, which greatly reduces the volume and production cost of the flat-panel transformer. A copper sheet Cu1 is arranged on the lead wire, and the area of ​​the copper sheet Cu1 is larger than the area of ​​the OC lead wire of pin 3 of the primary energy storage winding layer NP. At the same time, the upper and lower layers of the primary energy storage winding layer NP are respectively laid with copper skin Cu2 that matches the copper sheet Cu1, and the copper sheet Cu1 and the copper skin Cu2 are coupled to form a coupling capacitor C1. supply electrode. The copper sheet Cu1 is coupled with the multi-layer and copper skin Cu2 to form th...

Embodiment 2

[0023] The coupled self-powered circuit formed by the flat-panel transformer in Embodiment 1 includes a flat-panel transformer, a PWM chip, a field effect transistor MOS, and a charging circuit. like image 3 Specifically, the PWM chip in this embodiment is preferably implemented by the quasi-resonant flyback control AC-DC power switch chip of DK065G, and the field effect transistor MOS is preferentially used as a switching transistor of type KIA4750S, which can be used in actual use. Adjust the model of PWM chip and field effect transistor MOS as needed.

[0024] The gate of the field effect transistor MOS is connected to the GATE pin of the PWM chip through a resistor R2 with a resistance value of 10kΩ. The HV pin of the PWM chip is connected to pin 1 of the primary energy storage winding layer NP through a resistor R1 with a resistance value of 4kΩ. The drain of the field effect transistor MOS is respectively connected with pin 3 of the primary energy storage winding laye...

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Abstract

The invention discloses a flat transformer which is characterized by comprising a primary energy storage winding layer NP and an output winding layer NS. The invention further discloses a coupling type self-powered circuit formed according to the panel transformer, and the coupling type self-powered circuit is characterized by comprising the panel transformer, a PWM chip, a field effect transistor MOS and a charging circuit. The copper sheets arranged on the OC outgoing lines of the three pins of the primary energy storage winding layer are coupled with the multiple layers and the copper sheets to form the coupling capacitor, and the coupling capacitor serves as a power supply electrode of the flat plate transformer and can well replace a power supply winding layer of an existing flat plate transformer, so that the size of the flat plate transformer is well reduced, and the size of the flat plate transformer is reduced. And the cost of the flat transformer is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of electronics, in particular to a flat-panel transformer and a coupled self-power supply circuit formed therefrom. Background technique [0002] With the rise of wide-bandgap semiconductor GAN, more and more power adapters are matched with it, and the frequency is getting higher and higher, and the design of flat-panel transformers for power supply circuits is becoming more and more extensive. However, the windings of the existing flat-panel transformers used for power supply circuits are mostly composed of a primary energy storage winding layer NP, an output winding layer NS and a power supply winding layer NA, which have problems of large volume and high production cost. Therefore, it is an urgent task in the art to develop a flat-panel transformer that can reduce the volume of the flat-panel transformer and reduce the cost of the flat-panel transformer. SUMMARY OF THE INVENTION [0003] The purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/29H01F27/34H01F27/40H02J7/00
CPCH01F27/29H01F27/40H01F27/34H02J7/0063H02J7/00308
Inventor 庞继浩杨昕禾辛超叶修雷朱锡辉
Owner ANHUI DONGKE SEMICON CO LTD
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