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Transformer and switching power supply

A switching power supply, transformer technology, applied in the direction of transformer/inductor magnetic core, circuit, electrical components, etc., can solve the problem of increasing the height of the transformer, and achieve the effect of reducing the overall thickness and saving space in the thickness direction

Active Publication Date: 2020-06-26
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total thickness of the transformer includes the thickness of the PCB, the magnetic core and the cumulative limit tolerance, and the minimum air gap height of the magnetic core must be greater than the maximum thickness of the PCB, thus resulting in an increase in the overall height of the transformer

Method used

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  • Transformer and switching power supply
  • Transformer and switching power supply
  • Transformer and switching power supply

Examples

Experimental program
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Embodiment Construction

[0022] Embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0023] The transformer provided by the embodiment of the present invention is used for switching power supply or AC power supply. See figure 1 , the transformer in this embodiment is used as a switching power supply transformer as an example. The transformer includes a circuit board 10, two first magnetic core bodies 11 and at least one second magnetic core body 12 (attached figure 1 Take one as an example), the circuit board 10 includes two opposite surfaces 101 and 102 . The at least one second magnetic core body 12 is embedded in the circuit board 10 along the thickness direction of the circuit board 10, and the two first magnetic core bodies 11 are respectively fixed on the two opposite surfaces 101 and the surface 102, the at least one second magnetic core body 12 is located between the two first magnetic core bodies 11, and ...

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Abstract

The invention discloses a transformer. The transformer comprises a circuit board, two first magnetic core bodies and at least one second magnetic core body, wherein the circuit board has two opposite surfaces; the at least one second magnetic core body is embedded into the circuit board along the thickness direction of the circuit board; the two first magnetic core bodies are respectively fixed on the two opposite surfaces; the at least one second magnetic core body is positioned between two first magnetic core bodies; and the two first magnetic core bodies and the at least one second magnetic core body form a magnetic core of the transformer. The invention also provides a switch power supply.

Description

technical field [0001] The invention relates to the technical field of power supply manufacturing, in particular to a power transformer and a switching power supply. Background technique [0002] High-density miniaturization is the technical development trend of switching power supply. The transformer and inductance components in the power supply are one of the core components of the power supply, which have a decisive impact on the area and volume of switching power supply products. "Setting buckle magnetic cores on the circuit board" is the mainstream form of high-density miniaturized power supply to realize transformers and inductors. For example, in the existing complete power supply products, the magnetic core of the transformer is installed on the two opposite surfaces of the PCB to form the transformer and the inductance element; The total thickness of the transformer includes the thickness of the PCB, the magnetic core, and the cumulative limit tolerance, and the mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/24H01F3/14
CPCH01F3/14H01F27/24
Inventor 向志强
Owner HUAWEI DIGITAL POWER TECH CO LTD
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