Inductor used for class D power amplifier and manufacturing method of inductor

A production method and inductance technology, applied in the direction of inductors, fixed inductors, fixed signal inductors, etc., can solve the problems of inability to absorb materials, low production efficiency, complicated alignment, etc., to reduce processes, realize automatic feeding, cost reduction effect

Active Publication Date: 2016-04-13
SHENZHEN SUNLORD ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alignment of the whole production process is complicated, time-consuming and low in production efficiency
And the combined product is not a complete closed plane at the top, there are gaps
This gap leads to the problem that the material cannot be picked up by the vacuum nozzle during the automatic placement process.

Method used

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  • Inductor used for class D power amplifier and manufacturing method of inductor
  • Inductor used for class D power amplifier and manufacturing method of inductor
  • Inductor used for class D power amplifier and manufacturing method of inductor

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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary, and is not intended to limit the scope of the present invention and its application.

[0033] Refer to Figure 3 to Figure 7 In one embodiment, a class D power amplifier inductor includes a cap core 1, two rod cores 21, 22, two coil windings 31, 32, and a base 5. The cap core 1 The top surface of the cap core 1 is closed, and the bottom surface of the cap core 1 is opened to form two cavities 1a, 1b, and the two cavities 1a, 1b are separated by a middle wall, and the two rod cores 21 , 22 is independent of the cap core 1, the two rod cores 21, 22 are inserted into the two coil windings 31, 32, and the two coil windings 31, 32 with the rod cores 21, 22 are inserted respectively In the two cavities 1a, 1b, the base 5 covers the bottom surface of the cap core 1, and the terminals of the coil are led out from the electrode holes...

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Abstract

The invention discloses an inductor used for a class D power amplifier. The inductor comprises a cap body magnetic core, two rod magnetic cores, two coil windings and a base. The top face of the cap body magnetic core is closed. An opening is formed in the bottom face of the cap body magnetic core so that two cavities can be formed. The two cavities are separated through a middle wall. The two rod magnetic cores are independent of the cap body magnetic core. The two rod magnetic cores are inserted in the two coil windings respectively and arranged in the two cavities respectively. The bottom face of the cap body magnetic core is sealed by and covered with the base. Terminals of coils are led out of electrode holes in the base. The invention further discloses a manufacturing method of the inductor. By means of the inductor, the production cycle can be effectively shortened, cost is reduced, and efficient and automatic production is achieved.

Description

Technical field [0001] The invention relates to a magnetic electronic component, in particular to an inductor for class D power amplifier and a manufacturing method thereof. Background technique [0002] In the audio field, common audio amplifier circuits mainly include four types: Class A, Class B, Class AB and Class D. The main advantages of Class D power amplifier circuit compared with other circuits: (1) Small size; (2) High efficiency; (3) Low cost. In the current Class D 2-in-1 structure design, usually 3 or 4 magnetic cores + coil + base are combined. The inductance structure of the existing class D power amplifier is as figure 1 As shown, the explosion diagram is as figure 2 Shown. [0003] In the actual production process of this structure, the magnetic core coil needs to be positioned and assembled many times, and the assembly process requires more tools for fastening, and the fastening tools cannot be removed during the thermal curing process. The entire production p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F27/24H01F27/26H01F27/30
CPCH01F17/045H01F27/24H01F27/266H01F27/306
Inventor 何海根刘燕沈品帆侯勤田
Owner SHENZHEN SUNLORD ELECTRONICS
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